Chemistry

SULIT 1 4541/1
4541/1Hak Cipta BPSBPSK [Lihat halaman sebelah]
SULIT
4541/1
SULIT
CHEMISTRY
Kertas 1
Ogos 2012
1 ¼ jam
BAHAGIAN PENGURUSAN SEKOLAH BERASRAMA PENUH
DAN SEKOLAH KECEMERLANGAN
KEMENTERIAN PELAJARAN MALAYSIA
PENTAKSIRAN DIAGNOSTIK AKADEMIK SBP 2012
SIJIL PELAJARAN MALAYSIA
CHEMISTRY
Kertas 1
Satu jam lima belas minit
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
Arahan:
1. Kertas soalan ini adalah dalam dwibahasa.
2. Soalan dalam Bahasa Inggeris mendahului soalan yang sepadan dalam Bahasa Melayu.
3. Calon dikehendaki membaca maklumat di halaman belakang kertas soalan ini.
Kertas ini mengandungi 31 halaman bercetak
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SULIT 2 4541/1
SULIT
1 Which substance consists of atoms?
Bahan manakah terdiri daripada atom?
A Neon
Neon
B Water
Air
C Hydrogen
Hidrogen
D Ammonia
Ammonia
2 One mole of nitrogen, N2 and one mole of sulphur trioxide, SO3 have
Satu mol nitrogen, N2 dan 1 mol sulfur trioksida, SO3 mempunyai
A the same number of molecules
bilangan molekul yang sama
B the same number of atoms
bilangan atom yang sama
C the same proton number
nombor proton yang sama
D the same mass
jisim yang sama
3 The following information is about element X.
Maklumat berikut adalah mengenai unsur X.
 Can be used as catalyst in industry
 Boleh digunakan sebagai mangkin dalam industri
 Forms complex ions
 Membentuk ion kompleks
Which of the following is correct about element X?
Antara berikut yang manakah benar mengenai unsur X?
A It is a soft solid
Ia adalah satu pepejal lembut
B It has a low melting point
Ia mempunyai takat lebur yang rendah
C It forms coloured compounds
Ia membentuk sebatian berwarna
D It cannot conduct electricity in solid state
Ia tidak boleh mengalirkan elektrik dalam keadaan pepejal

SULIT 3 4541/1
SULIT
4 Methane is a covalent compound.
Which of following is correct about methane?
Metana adalah satu sebatian kovalen.
Antara berikut yang manakah betul tentang metana?
A Cannot conduct electricity Cannot condu
Tidak boleh mengalirkan arus elektrik
B Has high boiling point
Mempunyai takat didih yang tinggi
C Dissolves in water
Larut dalam air
D Has low volatility
Mempunyai kemeruapan yang rendah
5 Diagram 1 shows an electrolytic cell.
Rajah 1 menunjukkan satu sel elektrolitik
Diagram 1
Rajah 1
Which substance is suitable to be used as an electrolyte?
Bahan manakah sesuai digunakan sebagai satu elektrolit?
A Sodium hydroxide solution
Larutan natrium hidroksida
B Glucose solution
Larutan glukosa
C Ethyl ethanoate
Etil etanoat
D Ethanol
Etanol
Carbon electrodes
Elektrod karbon
Electrolyte
Elektrolit

SULIT 4 4541/1
SULIT
6 Which of the following is correct about acid?
Antara berikut yang manakah betul tentang asid?
A The taste is bitter
Rasanya pahit
B The pH value is more than 7
Nilai pH lebih daripada 7
C Change red litmus paper to blue
Menukarkan kertas litmus merah ke biru
D Ionised in water to produced hydrogen ion
Mengion dalam air menghasilkan ion hidrogen
7 Diagram 2 shows the stages involved in the Contact Process to produce
sulphuric acid.
Rajah 2 menunjukkan peringkat-peringkat yang terlibat dalam Proses
Sentuh untuk menghasilkan asid sulfurik.
SO2 I
SO3 II
H2S2O7 III
H2SO4
What is the optimum temperature and the catalyst used in stage I?
Apakah suhu optimum dan mangkin yang digunakan dalam peringkat I?
Temperature ( o
C)
Suhu ( o
C)
Catalyst
Mangkin
A
200 Manganese(IV) oxide
Mangan(IV) oksida
B
450 Vanadium(V) oxide
Vanadium(V) oksida
C
450 Iron
Besi
D
200 Nickel
Nikel
Diagram 2
Rajah 2

SULIT 5 4541/1
SULIT
9 Diagram 3 shows the decomposition of hydrogen peroxide at room temperature.
Rajah 3 menunjukkan penguraian hidrogen peroksida pada suhu bilik.
Diagram 3
Rajah 3
What should be done to increase the rate of decomposition of hydrogen peroxide?
Apakah yang perlu dilakukan untuk meningkatkan kadar penguraian hidrogen
peroksida?
A Add water
Tambah air
B Add catalyst
Tambah mangkin
C Use small beaker
Gunakan bikar lebih kecil
D Cool the hydrogen peroxide
Sejukkan hidrogen peroksida
8 Which reagent is used to identify the present of chloride ion, Cl
in a solution?
Reagen manakah digunakan untuk mengenal pasti kehadiran ion klorida, Cl-
dalam
satu larutan?
A Silver nitrate
Argentum nitrat
B Barium sulphate
Barium sulfat
C Sodium hydroxide
Natrium hidroksida
D Potassium thiocyanate
Kalium tiosianat
Hydrogen peroxide
Hidrogen peroksida

SULIT 6 4541/1
SULIT
10 Diagram 4 shows the structural formula of a hydrocarbon compound.
Rajah 4 menunjukkan formula struktur bagi satu sebatian hidrokarbon.
What is the name of the compound based on IUPAC nomenclature?
Apakah nama sebatian ini berdasarkan penamaan IUPAC?
A 2- methylbut-2-ene
2-metilbut-2-ena
B 2 -methylbut-3-ene
2-metilbut-3-ena
C 3- methylbut-2-ene
3-metilbut-2-ena
D 3- methylbut-3-ene
3-metilbut-3-ena
11 The chemical equation represents the reaction between zinc oxide, ZnO and carbon
monoxide, CO.
Persamaan kimia mewakili tindak balas antara zink oksida, ZnO dan karbon
monoksida, CO.
ZnO + CO Zn + CO2
What is the role of carbon monoxide in this reaction?
Apakah peranan karbon monoksida dalam tindak balas ini?
A Dehydrating agent
Agen penghidratan
B Reducing agent
Agen penurunan
D Oxidising agent
Agen pengoksidaan
D Catalyst
Mangkin
Diagram 4
Rajah 4
=

SULIT 7 4541/1
SULIT
12 Which chemical reaction releases heat to the surrounding?
Tindak balas kimia manakah yang membebaskan haba ke persekitaran?
A Dissolving sodium hydroxide in water
Melarutkan kalsium karbonat ke dalam air
B Dissolving ammonium nitrate in water
Melarutkan ammonium nitrat dalam air
C Dissolving potassium carbonate in water
Melarutkan kalium karbonat dalam air
D Dissolving potassium hydrogen carbonate in water
Melarutkan kalium hidrogen karbonat ke dalam air
13 Diagram 5 shows the electron arrangement of oxygen atom.
Rajah 5 menunjukkan susunan elektron bagi atom oksigen.
Which of the following is correct about this atom?
Antara berikut, yang manakah betul tentang atom ini?
A The proton number is 6
Nombor proton ialah 6
B The nucleon number is 8
Nombor nukleon ialah 8
C The number of neutrons is 6
Bilangan neutron ialah 6
D The number of electrons is 8
Bilangan elektron ialah 8
Diagram 5
Rajah 5

SULIT 8 4541/1
SULIT
14 Which food additive can prevent the activity of microorganism in food?
Bahan tambah makanan manakah boleh menghalang aktiviti mikroorganisma dalam
makanan?
A Pectin
Pektin
B Lecithin
Lecitin
C Benzoic acid
Asid benzoik
D Ascorbic acid
Asid askorbik
15 Diagram 6 shows the set-up of apparatus to determine the empirical formula of P
oxide.
What is P oxide?
Rajah 6 menunjukkan susunan radas untuk menentukan formula empirik bagi oksida
P.
Apakah oksida P?
Crucible P oxide
Mangkuk pijar Oksida P
Diagram 6
Rajah 6
A Silver oxide
Argentum oksida
B Lead (II)oxide
Plumbum (II) oksida
C Copper (II) oxide
Kuprum(II) oksida
D Magnesium oxide
Magnesium oksida
Heat
Panaskan

SULIT 9 4541/1
SULIT
16 Diagram 7 shows the set-up of apparatus for a simple voltaic cell.
Rajah 7 menunjukkan susunan radas bagi satu sel voltan ringkas.
Diagram 7
Rajah 7
Which pair of metal will produced the highest voltmeter reading when it is used as
electrode P and electrode Q?
Pasangan logam manakah akan menghasilkan bacaan voltmer paling tinggi apabila ia
digunakan sebagai elektrod P dan elektrod Q?
P Q
A Magnesium
Magnesium
Silver
Argentum
B Zinc
Zink
Iron
Ferum
C Tin
Stanum
Lead
Plumbum
D Aluminium
Aluminium
Copper
Kuprum
Electrode Q
Elektrod Q
Electrode P
Elektrod P
Copper(II) sulphate solution
Larutan kuprum(II) sulfat

SULIT 10 4541/1
SULIT
17 Metal X is soft and shiny. It reacts with cold water to produce an alkaline solution.
What is metal X?
Logam X adalah lembut dan berkilat. Ia bertindak balas dengan air untuk
menghasilkan larutan yang bersifat alkali.
Apakah logam X?
A Magnesium
Magnesium
B Sodium
Natrium
C Copper
Kuprum
D Zinc
Zink
18 Which acid ionises completely in water?
Asid manakah mengion dengan lengkap dalam air?
A CH3COOH
B H3PO4
C H2CO3
D H2SO4
19 Which pair of solutions produces an insoluble salt?
Pasangan larutan manakah menghasilkan satu garam tak terlarutkan?
A Nitric acid and silver nitrate solution
Asid nitrik dan larutan argentum nitrat
B Potassium sulphate solution and zinc chloride solution
Larutan kalium sulfat dan larutan zink klorida
C Copper(II) sulphate solution and lead(II) nitrate solution
Larutan kuprum(II) sulfat dan larutan plumbum(II) nitrat
D Magnesium nitrate solution and copper(II) chloride solution
Larutan magnesium nitrat dan larutan kuprum(II) klorida

SULIT 11 4541/1
SULIT
20 Diagram 8 shows part of a Periodic Table of Elements.
Element F reacts with element G to form a compound.
Rajah 8 menunjukkan sebahagian daripada Jadual Berkala Unsur.
Unsur F bertindak balas dengan unsur G membentuk satu sebatian.
Diagram 8
Rajah 8
Which properties are correct for the compound formed between element F and
element G?
Sifat manakah adalah betul bagi sebatian yang terbentuk antara unsur F dan unsur
G?
Boiling point (o
C)
Takat didih (o
C)
Solubility in water
Keterlarutan dalam air
A Low
Rendah
Does not dissolve
Tidak larut
B High
Tinggi
Dissolves
Larut
C High
Tinggi
Does not dissolve
Tidak larut
D Low
Rendah
Dissolves
Larut
G
F

SULIT 12 4541/1
SULIT
21 Which statements are true about the effect of concentration of reactants on the rate of
reaction based on the collision theory?
Pernyataan manakah betul tentang kesan kepekatan bahan tindak balas ke atas kadar
tindak balas berdasarkan teori perlanggaran?
I The kinetic energy of the reactant particles increases.
Tenaga kinetik zarah-zarah bahan tindak balas bertambah.
II The frequency of collision between reactant particles increases.
Frekuensi perlanggaran antara zarah-zarah bahan tindak balas bertambah.
III The number of reactant particles per unit volume increases
Bilangan zarah-zarah bahan tindak balas per unit isi padu bertambah.
IV The activation energy of the reactant particles increases.
Tenaga pengaktifan zarah-zarah bahan tindak balas bertambah.
A I and III only
I dan III sahaja
B I and IV only
I dan IV sahaja
C II and III only
II dan III sahaja
D II and IV only
II dan IV sahaja
22 Ceramic is suitable for making the exterior of space shuttle because ceramic
Seramik sesuai digunakan untuk membuat bahagian luar kapal angkasa kerana
seramik
A can store charges
boleh menyimpan cas
B has high melting point
mempunyai takat lebur tinggi
C can resist to chemical corrosion
tahan terhadap kakisan kimia
D can withstand high pressure and heat
tahan terhadap haba dan tekanan tinggi

SULIT 13 4541/1
SULIT
23 Which statement best explains why vulcanised rubber is more elastic than
unvulcanised rubber?
Pernyataan manakah paling baik menerangkan mengapa getah tervulkan lebih elastik
daripada getah tak tervulkan?
A Size of molecule of vulcanised rubber is bigger.
Saiz molekul getah tervulkan lebih besar.
B The melting point of vulcanised rubber is higher.
Takat lebur getah tervulkan lebih tinggi.
C Vulcanised rubber has less double bond between carbon atoms.
Getah tervulkan mempunyai kurang ikatan ganda dua antara atom-atom
karbon.
D Presence of sulphur cross-linkage pulls the vulcanised rubber molecule back to
their original position.
Kehadiran rantai silang sulfur menarik molekul getah tervulkan kembali
kepada kedudukan asal.
24 Fe3+
ion solution can be converted to Fe2+
ions by adding zinc powder.
Which substance can be used to replace zinc powder in this reaction?
Larutan ion Fe3+
boleh ditukarkan kepada ion Fe2+
dengan menambah serbuk zink.
Bahan manakah boleh digunakan untuk menggantikan serbuk zink dalam tindak balas
ini?
A Chlorine water
Air klorin
B Potassium iodide solution
Larutan kalium iodida
C Potassium hexacynoferrate(II) solution
Larutan kalium heksasianoferat(II)
D Acidified potassium manganate(VII) solution
Larutan kalium manganat(VII) berasid

SULIT 14 4541/1
SULIT
25 The thermochemical equation represents a reaction between Ag+
and Cl-
.
Persamaan termokimia mewakili tindak balas antara Ag+
dan Cl-
.
Ag+
(aq) + Cl-
(aq)  AgCl(s); H = ─65.5 kJmol-1
Ag+
(ak) + Cl-
(ak)  AgCl(p); H = ─65.5 kJmol-1
Which of the following is correct about the equation?
Antara berikut yang manakah betul tentang persamaan itu?
A Heat is released to the surroundings
Haba dibebas ke persekitaran
B The temperature of the mixture falls
Suhu campuran menurun
C 65.5 kJ of heat energy is absorbed to form 1 mol of silver chloride
65.5 kJ tenaga haba diserap membentuk 1 mol argentum klorida
D The total energy of reactants is lower than the total energy of products
Kandungan tenaga bahan tindak balas lebih rendah daripada kandungan
tenaga hasil tindak balas
26 Diagram 9 shows the structure of ions of cleaning agents P and Q.
Rajah 9 menunjukkan struktur bagi ion agen pencuci P dan Q.
Diagram 9
Rajah 9
Which statement is true about cleaning agents P and Q?
Pernyataan manakah benar tentang agen pencuci P dan Q?
A Cleaning agent P dissolves in soft water but cleaning agent Q forms a precipitate
in soft water.
Agen pencuci P larut dalam air lembut tetapi agen pencuci Q membentuk
mendakan dalam air lembut.
B Cleaning agents P and Q have the hydrophobic part that are dissolve in water.
Agen pencuci P dan Q mempunyai bahagian hidrofobik yang larut dalam air.
C Cleaning agent P is less effective than cleaning agent Q in hard water.
Agen pencuci P lebih berkesan daripada agen pencuci Q dalam air liat.
D Cleaning agents P and Q form precipitate in acidic water.
Agen pencuci P dan Q membentuk mendakan dalam air berasid.
COO-
SO3
-
P Q

SULIT 15 4541/1
SULIT
27 Which diagram shows the arrangement of particles that has the strongest attraction
force between the particles?
Rajah manakah menunjukkan susunan zarah yang mempunyai daya tarikan antara
zarah yang paling kuat?
A
B
C
D

SULIT 16 4541/1
SULIT
28 Diagram 10 shows the arrangement of atoms in bronze.
Rajah 10 menunjukkan susunan atom dalam gangsa.
Which statement explains why bronze is harder than pure copper?
Pernyataan manakah menerangkan mengapa gangsa lebih kuat daripada kuprum
tulen?
A The arrangement of atoms is more compact in bronze.
Susunan atom lebih padat dalam gangsa.
B There are no empty spaces between atoms in bronze.
Tiada ruang kosong dalam gangsa.
C Layers of atoms are not easily to slide in bronze.
Lapisan atom sukar menggelongsor dalam gangsa.
D Strong bonds are formed between copper atoms and tin atoms in bronze.
Ikatan yang kuat terbentuk antara atom kuprum dan atom stanum dalam
gangsa.
29 Table 1 shows the proton number for element X and element Y.
Jadual 1 menunjukkan nombor proton bagi unsur X dan unsur Y.
Element
Unsur
Proton number
Nombor proton
X 13
Y 8
Table 1
Jadual 1
What is the formula of the compound formed when element X reacts with element Y?
Apakah formula bagi sebatian yang terbentuk apabila unsur X bertindak balas
dengan unsur Y?
A X2Y
B XY2
C X3Y2
D X2Y3
Copper atom
Atom kuprum
Tin atom
Atom stanum
Diagram 10
Rajah 10

SULIT 17 4541/1
SULIT
30 Which statements are true about elements when going across Period 3?
Pernyataan manakah betul mengenai unsur-unsur apabila merentasi Kala 3?
I The atomic size of elements increase.
Saiz atom bagi unsur-unsur semakin bertambah.
II The electronegativity of atoms of the elements increase.
Keelektronegatifan atom bagi unsur-unsur semakin bertambah.
III The properties of the oxide of the elements change from basic oxide to
ampotheric oxide and acidic oxide.
Sifat oksida berubah daripada oksida bes kepada oksida amfoterik dan oksida
asid.
IV The nuclei force of attraction of atoms towards electron to achieve stable
electron arrangement becomes weaker.
Daya tarikan nukleus atom terhadap elektron untuk mencapai susunan
elektron yang stabil semakin lemah.
A I and II
I dan II
B II and III
II dan III
C III and IV
III dan IV
D I and IV
I dan IV
31 Electrolysis of 1.0 mol dm-3
of solution X is carried out using carbon electrodes.
A yellow gas is released at the anode.
What is solution X?
Elektrolisis larutan X 1.0 mol dm-3
dijalankan menggunakan elektrod karbon.
Satu gas kuning terbebas di anod.
Apakah larutan X?
A Sodium bromide
Natrium bromida
B Sodium chloride
Natrium klorida
C Potassium iodide
Kalium iodida
D Potassium hydroxide
Kalium hidroksida

SULIT 18 4541/1
SULIT
32 The equation represents a reaction between potassium hydroxide solution and
ammonium sulphate.
Persamaan mewakili tindak balas antara larutan kalium hidroksida dan ammonium
sulfat.
KOH + (NH4)2SO4 substance X + gas Y + H2O
KOH + (NH4)2SO4 substance X + gas Y + H2O
What is substance X and gas Y?
Apakah bahan X dan gas Y?
Substance X
Bahan X
Gas Y
Gas Y
A Ammonium hydroxide
Ammonium hidroksida
Ammonia
Ammonia
B Ammonium hydroxide
Ammonium hidroksida
Nitrogen dioxide
Nitrogen dioksida
C Potassium sulphate
Kalium sulfat
Ammonia
Ammonia
D Potassium nitrate
Kalium nitrat
Nitrogen dioxide
Nitrogen dioksida
33 Diagram 11 shows the energy profile for a reaction.
Rajah 11 menunjukkan profil tenaga bagi satu tindak balas.
Diagram 11
Rajah 11
What is the heat of reaction for this reaction?
Apakah haba tindak balas bagi tindak balas ini?
A -40 kJ mol-1
B -42 kJ mol-1
C -68 kJ mol-1
D -110 kJ mol-1
A + B
C + D
28
68
110
Energy
Tenaga

SULIT 19 4541/1
SULIT
34 Diagram 12 shows the activation energy, Ea in an energy profile diagram of the
reaction between zinc granules and hydrochloric acid.
Rajah 12 menunjukkan tenaga pengaktifan,Ea dalam gambar rajah profil tenaga bagi
tindak balas antara ketulan zink dan asid hidroklorik.
Diagram 12
Rajah 12
Which method is suitable to get lower activation energy, Ea’ in the reaction?
Kaedah manakah sesuai digunakan untuk mendapatkan tenaga pengaktifan, yang
lebih rendah,Ea’ dalam tindak balas itu?
A Use zinc powder
Gunakan serbuk zink
B Cool the hydrochloric acid
Sejukkan asid hidroklorik
C Add copper(II) sulphate solution
Tambahkan larutan kuprum(II) sulfat
D Increase the concentration of hydrochloric acid
Tinggikan kepekatan asid hidroklorik
Energy
Tenaga
Zn + 2HCl
ZnCl2 + H2
2HCl
Ea
Ea’

SULIT 20 4541/1
SULIT
35 Table 2 shows the observations for two chemical tests to identify a type of cation in a
solution.
Jadual 2 menunjukkan pemerhatian bagi dua ujian kimia untuk mengenal pasti satu
jenis kation dalam satu larutan.
Test
Ujian
Step
Langkah
Observation
Pemerhatian
I Add excess sodium hydroxide solution into the
solution
Tambah larutan natrium hidroksida berlebihan ke
dalam larutan
Blue precipitate
Mendakan biru
II Add excess ammonia solution into the solution
Tambah larutan ammonia berlebihan ke dalam
larutan
Table 2
Jadual 2
What is observed in test II?
Apakah yang diperhatikan dalam ujian II?
A A brown ring is formed
Cincin perang terbentuk
B A green precipitate is formed
Mendakan hijau terbentuk
C A dark blue solution is formed
Larutan biru tua terbentuk
D A colourless solution is formed
Larutan tidak berwarna terbentuk

SULIT 21 4541/1
SULIT
36 Diagram 13 shows a racing car. The body of the car is made of substance X.
Rajah 13 menunjukkan sebuah kereta lumba. Badan kereta tersebut diperbuat
daripada bahan X.
Diagram 13
Rajah 13
Substance X has the following properties:
Bahan X mempunyai ciri-ciri berikut:
 strong
kuat
 light
ringan
 withstand high temperature
tahan suhu yang tinggi
 durable
tahan lasak
Which of the following is substance X?
Antara berikut manakah bahan X?
A Steel
Keluli
B Perspex
Perspek
C Ceramic
Seramik
D Fibre glass
Gentian kaca
Substance X
Bahan X

SULIT 22 4541/1
SULIT
37 Diagram 14 shows the label on a bottle of an orange juice.
Rajah 14 menunjukkan label pada sebotol jus oren.
Diagram 14
Rajah 14
Which substance will enhanced the flavour and smell of the orange juice?
Bahan tambah makanan manakah akan meningkatkan rasa dan bau pada jus oren
itu?
A Octyl ethanoate
Oktil etanoat
B Sulphur dioxide
Sulphur dioxida
C Ascorbic acid
Asid askorbik
D Tatrazine
Tatrazina
Ingredients : Orange juice, sugar, water, tatrazine,
sulphur dioxide, octyl ethanoate, ascorbic acid
Kandungan : Jus oren, gula, air, tatrazina, sulfur dioksida,
octil etanoat, acid askorbik
Expiry date 30102012
Tarikh luput 30102012

SULIT 23 4541/1
SULIT
38 Diagram 15 shows the apparatus set-up for the reaction between carbon and metal T
oxide.
Rajah 15 menunjukkan susunan radas bagi tindakbalas antara karbon dan oksida
logam T.
Diagram 15
Rajah 15
When the mixture is heated strongly, a flame spreads to the whole mixture.
What is metal T?
Apabila campuran itu dipanaskan dengan kuat, nyalaan tersebar ke seluruh
campuran.
Apakah logam T?
A Zinc
Zink
B Copper
Kuprum
C Magnesium
Magnesium
D Aluminium
Aluminium
39 A patient is experiencing depression and difficulty in sleeping.
Which medicine is suitable for treating the patient?
Seorang pesakit mengalami tekanan dan kesukaran untuk tidur.
Ubat manakah sesuai untuk merawat pesakit itu?
A Codeine
Kodeina
B Barbiturate
Barbiturat
C Paracetamol
Parasetamol
D Streptomycin
Streptomisin
Mixture of carbon
powder and metal T
oxide
Campuran serbuk
karbon dan oksida
logam T Heat
Panaskan

SULIT 24 4541/1
SULIT
40 Which substance is a liquid at room temperature?
Bahan manakah adalah cecair pada suhu bilik?
Substance
Bahan
Melting point (o
C)
Takat lebur (o
C)
Boiling point (o
C)
Takat didih (o
C)
A -35 10
B 45 240
C -255 -170
D 15 130
41 Table 3 shows the observation when metals L, M and P in Group 1 of the Periodic
Table are burnt in the separate gas jar containing chlorine gas.
Metal
Logam
Observation
Pemerhatian
L Burns slowly
Terbakar dengan perlahan
M Burns very vigorously
Terbakar dengan sangat cergas
P Burns vigorously
Terbakar dengan cergas
Table 3
Jadual 3
What is the correct arrangement in decreasing proton number of the elements in
the Periodic Table?
Apakah susunan yang betul mengikut pengurangan nombor proton unsur-unsur itu
dalam Jadual Berkala?
A L, P, M
B M, L, P
C P, M, L
D M, P, L

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42 The equation represents a reaction between dilute hydrochloric acid and magnesium.
Persamaan mewakili tindak balas antara asid hidroklorik cair dengan magnesium.
p HCl + q Mg r MgCl2 + H2
What are the values of p, q and r in the balanced chemical equation?
Apakah nilai bagi p, q dan r dalam persamaan kimia yang seimbang?
A p = 1, q = 1, r = 1
B p = 1, q = 1, r = 2
C p = 2, q = 1, r = 2
D p = 2, q = 1, r = 1
43 50.0 cm3
of 0.4 mol dm-3
sodium hydroxide solution, NaOH, is titrated with
1.0 mol dm-3
sulphuric acid, H2SO4.
What is the volume of sulphuric acid needed to neutralize the sodium hydroxide
solution?
50.0 cm3
larutan natrium hidroksida, NaOH 0.4 mol dm-3
telah dititratkan dengan
asid sulfurik, H2SO4 1.0 mol dm-3
.
Berapakah isipadu asid sulfurik yang diperlukan untuk meneutralkan larutan natrium
hidroksida itu?
A 10.0 cm3
B 20.0 cm3
C 40.0 cm3
D 50.0 cm3

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44 Table 4 shows the proton number of elements magnesium and oxygen
Jadual 4 menunjukkan nombor proton bagi unsur-unsur magnesium dan oksigen.
Element
Unsur
Proton number
Nombor proton
Magnesium
Oxygen
12
8
Table 4
Jadual 4
Which of the following represents the electron arrangement of the compound formed
when magnesium reacts with oxygen?
Antara berikut yang manakah mewakili susunan elektron bagi sebatian yang terbentuk
apabila unsur magnesium bertindak balas dengan oksigen?
A
B
C
D
Mg O
2+ 2-
Mg O
2-
MgO O
2+ 2-
x
x
Mg
g
OO

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45 Table 5 shows the results of displacement reaction of metals to construct the
electrochemical series.
Jadual 5 menunjukkan keputusan bagi tindak balas penyesaran logam untuk membina
siri eletrokimia.
Solution
Metal
W nitrate X nitrate Y nitrate Z nitrate
W X is displaced Y is displaced No change
X No change Y is displaced No change
Y No change No change No change
Z W is displaced X is displaced Y is displaced
Table 5
Jadual5
Which of the following is the correct ascending order of these metals in the
electrochemical series?
Antara berikut yang manakah kedudukan susunan secara menaik bagi logam-logam
ini dalam siri elektrokimia?
A X, W, Y, Z
B W, Y, X, Z
C Y, X, W, Z
D Z, W, X, Y
46 Calcium carbonate reacts with acid to produce a salt, carbon dioxide and water.
Which acid will produce the highest rate of reaction?
Kalsium karbonat bertindak balas dengan asid untuk menghasilkan satu garam,
karbon dioksida dan air.
Asid manakah akan menghasilkan kadar tindak balas paling tinggi?
A 20 cm3
of 0.1 mol dm-3
hydrochloric acid
20 cm3
asid hidroklorik 0.1 mol dm-3
B 20 cm3
0.1 mol dm-3
sulphuric acid acid
20 cm3
asid sulfurik 0.1 mol dm-3
C 50 cm3
0.1 mol dm-3
ethanoic acid acid
50 cm3
asid etanoik 0.1 mol dm-3
D 50 cm3
of 0.1 mol dm-3
nitric acid
50 cm3
asid nitrik 0.1 mol dm-3

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47 Diagram 16 shows the set-up of apparatus to investigate the effect of heating on a salt.
Rajah 16 menunjukkan susunan radas untuk mengkaji kesan haba ke atas satu garam.
Diagram 16
Rajah 16
Which of the following is true about the salt?
Antara berikut yang manakah benar tentang garam itu?
I Nitrogen dioxide gas is liberated
Gas nitrogen dioksida terbebas
II Carbon dioxide gas is liberated
Gas karbon dioksida terbebas
III Lead(II) oxide is formed
Plumbum(II) oksida terhasil
IV The black residue is formed
Baki berwarna hitam terbentuk
A I and III only
I dan III sahaja
B I and IV only
I dan IV sahaja
C II and III only
II dan III sahaja
D II and IV only
II dan IV sahaja
Lime water
Air kapur
Lead(II) carbonate
Plumbum(II) oksida
Heat
Panaskan

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48 The chemical equation represents a reaction between chlorine gas and heated iron
wool
Persamaan mewakili satu tindak balas antara gas klorin dengan wul besi panas.
3Cl2 + 2Fe 2FeCl3
What is the mass of iron(III) chloride formed when 120 cm3
chlorine gas reacted with
heated iron wool?
[Relative atomic mass: Cl= 35.5 , Fe = 56,
Molar volume of gas at room temperature = 24 dm3
mol-1
]
Berapakah jisim ferum(III) klorida yang terbentuk apabila 120 cm3 gas klorin
bertindakbalas dengan wul besi panas?
[Jisim atom relatif:, Cl = 35.5, Fe = 56 ,
Isipadu molar gas pada suhu bilik = 24 dm3
mol-1
]
A 0.305g
B 0.542g
C 0.580g
D 0.813g
49 Which chemical equation represents a redox reaction?
Persamaan kimia manakah mewakili satu tindak balas redoks?
A Ba(NO3)2 + Na2SO4 BaSO4 + 2NaNO3
B H2SO4 + 2NaOH Na2SO4 + 2H2O
C Cl2 + NaOH NaOCl + HCl
D Cl2 + H2S S + 2HCl

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50 Diagram 17 shows a process of producing a compound Z.
Rajah17 menunjukkan satu proses untuk menghasilkan satu sebatian Z.
Diagram 17
Rajah 17
What is the name of compound Z?
Apakah nama sebatian Z?
A Ethyl ethanoate
Etil etanoat
B Ethyl propanoate
Etil propanoat
C Propyl ethanoate
Propil etanoat
D Propyl propanoate
Propil propanoat
END OF QUESTION PAPER
Propene
Propena
Ethanol
Etanol
Hydration
Penghidratan
Compound Z
Sebatian Z
Compound Y
Sebatian Y
Compound X
Sebatian X
Oxidation
Pengoksidaan

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INFORMATION FOR CANDIDATES
MATLUMAT UNTUK CALON
1. This question paper consists of 50 questions.
Kertas soalan ini mengandungi 50 soalan.
2. Answer all questions.
Jawab semua soalan.
3. Each question is followed by four alternative answers, A, B, C and D. For each
question, choose one answer only. Blacken your answer on the objective answer sheet
provided.
Tiap-tiap soalan diikuti oleh empat pilihan jawapan, iaitu A, B, C dan D. Bagi setiap
soalan, pilih satu jawapan sahaja. Hitamkan jawapan anda pada kertas jawapan
objektif yang disediakan.
4. If you wish to change your answer, erase the blackened mark that you have made.
Then blacken the space for the new answer.
Jika anda hendak menukar jawapan, padamkan tanda yang telah dibuat.
Kemudian hitamkan jawapan yang baru.
5. The diagrams in the questions provided are not drawn to scale unless stated.
Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.
6. You may use a scientific calculator.
Anda dibenarkan menggunakan kalkulator saintifik.

SULIT 4541/2
4541/2 © 2012 Hakcipta BPSBPSK [Lihat sebelah
SULIT
Nama :............................................................. Tingkatan :..............................
SULIT
4541/2
Chemistry
Kertas 2
Ogos
2012
2 ½ jam
CHEMISTRY
Kertas 2
Dua jam tiga puluh minit
1. Tuliskan nama dan tingkatan pada ruang yang
disediakan.
2. Jawab semua soalan daripada Bahagian A.
Tuliskan jawapan anda dalam ruang yang
disediakan
3. Jawab satu soalan daripada Bahagian B dan
satu soalan daripada Bahagian C. Jawapan
kepada Bahagian B dan Bahagian C hendaklah
ditulis pada kertas tulis.
4. Anda diminta menjawab dengan lebih terperinci
untuk Bahagian B dan Bahagian C. Jawapan
mestilah jelas dan logik. Persamaan, gambar
rajah, jadual, graf dan cara lain yang sesuai
untuk menjelaskan jawapan anda boleh
digunakan.
5. Anda hendaklah menyerahkan kertas tulis dan
kertas tambahan, jika digunakan bersama-sama
dengan kertas soalan.
6. Penggunaan kalkulator saintifik yang tidak boleh
diprogramkan adalah dibenarkan.
Kertas soalan ini mengandungi 28 halaman bercetak
Untuk Kegunaan Pemeriksa
Bahagian Soalan Markah
penuh
Markah
diperoleh
A
1 9
2 9
3 10
4 10
5 11
6 11
B 7 20
8 20
C
9 20
10 20
Jumlah

SULIT 4541/2
4541/2 © 2012 Hakcipta BPSBPSK SULIT
2
Section A
Bahagian A
[60 marks]
[60 markah]
Answer all questions.
Jawab semua soalan dalam bahagian ini.
1 Diagram 1 shows the formula of two type of cleaning agents soap and detergent.
Rajah 1 menunjukkan formula bagi dua jenis agen pencuci sabun dan detergen.
Diagram 1.1
Rajah 1.1
(a) State the type of cleaning agent:
Nyatakan jenis agen pencuci:
A: ……………………………………………………………………………………...
B: ……………………………………………………………………………………...
[2 marks]
[2 markah]
(b) “Soaps form scum while detergents do not form scum with hard water. Thus the
cleansing action of detergent is more effective than soap in hard water”.
“Sabun membentuk kekat manakala detergen tidak membentuk kekat dalam air liat.
Oleh itu tindakan pencucian detergen lebih berkesan daripada sabun dalam air liat”.
(i) Name one ion in hard water that causes the formation of scum.
Namakan satu ion dalam air liat yang menyebabkan pembentukan kekat.
…………………………………………………………………………………..
[1 mark]
[1 markah]
(ii) State one advantage of soap compared to detergent toward environment.
Nyatakan satu kelebihan sabun berbanding dengan detergen terhadap alam
sekitar
………………………………………………………………….……………….
[1 mark]
[1 markah]
CH3(CH2)11OSO3
-
Na+ CH3(CH2)16COO-
Na+
Cleaning Agent A
Agen pencuci A
Cleaning Agent B
Agen pencuci B

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3
(c) Table 1 shows the function of two types of medicine.
Jadual 1 menunjukkan fungsi dua jenis ubat.
Function
Fungsi
Type of medicine
Jenis ubat
Relieve pain
Mengurangkan kesakitan
Changes the emotions and behavior
of the patient.
Mengubah emosi dan perlakuan pesakit.
Table 1.2
Jadual 1.2
Complete Table 1.2 by writing the type of medicine in the space provided.
Lengkapkan Jadual 1.2 dengan menulis jenis ubat di dalam ruang yang disediakan.
[2 marks]
[2 markah]
(d) Diagram 1.3 shows the label on the box of banana cake.
Rajah 1.3 menunjukkan label pada kotak yang berisi kek pisang.
Diagram 1.3
Rajah 1.3
(i) One of the ingredients in the food is not suitable for a diabetic patient.
State the ingredient and suggest another food additive that give the same sweetness
but has low calories content.
Satu daripada bahan dalam makanan tersebut tidak sesuai bagi pesakit
diabatik. Nyatakan bahan tersebut dan cadangkan satu bahan tambah
makanan lain yang dapat memberikan kemanisan yang sama tetapi
mempunyai kandungan kalori yang lebih rendah.
........………………………………………………………………………………….
........………………………………………………………………………………….
[2 marks]
[2 markah]
Banana Cake
Kek Pisang
Ingredients:
Bahan-bahan:
Wheat flour, egg, margarine, sugar, penthyl ethanoate, ascorbic acid,
‘Sunset Yellow’.
Kandungan: tepung gandum, telur, margerin, gula, pentil etanoat, asid
askorbik, ‘Sunset Yellow’.

SULIT 4541/2
4
(ii) State the function of ‘Sunset Yellow’.
Nyatakan fungsi ‘Sunset Yellow’.
......…………………………………………………………………………………..
[1 mark]
[1 markah]
2 Diagram 2.1 shows part of the Periodic Table of the Elements.
Na, Mg, Cl and Ar represent the actual symbol of the elements.
Rajah 2.1 menunjukkan sebahagian daripada Jadual Berkala Unsur.
Na, Mg, Cl dan Ar mewakili simbol sebenar unsur.
Diagram 2.1
Rajah 2.1
Based on Diagram 2.1:
Berdasarkan Rajah 2.1:
(a) (i) Name the element which is located in Group 2 and Period 3.
Namakan unsur yang terletak dalam Kumpulan 2 dan Kala Ke-3.
....................................................................................................................................
[1 mark]
[1 markah]
(ii) Explain why the element in (a)(i) is located in Period 3.
Terangkan mengapa unsur dalam (a)(i) terletak dalam Kala Ke-3.
.....................................................................................................................................
[1 mark]
[1 markah]
(b) Chlorine atom is smaller than magnesium atom. Explain why.
Atom klorin lebih kecil daripada atom magnesium. Terangkan mengapa.
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
[2 marks]
[2 markah]
Na Mg Cl Ar

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5
(c) State one use of argon in daily life.
Nyatakan satu kegunaan argon dalam kehidupan seharian.
..........................................................................................................................................
[1 mark]
[1 mark]
(d) Name the element which exists as monoatomic gas.
Namakan unsur yang wujud sebagai gas monoatom.
..........................................................................................................................................
[1 mark]
[1 markah]
(e) Chlorine, Cl2 gas reacts with hot iron wool to produce a brown solid.
Gas klorin, Cl2 bertindak balas dengan wul besi panas untuk menghasilkan pepejal
perang.
(i) Complete the chemical equation below.
Lengkapkan persamaan di bawah.
____ Cl2 (g) + ____ Fe (s) ____ FeCl3(s)
[1 mark]
[1 markah]
(ii) Based on the chemical equation in (e)(i), calculate the maximum mass of iron
(III) chloride formed when 0.05 mol of iron is used in the reaction.
[Relative atomic mass: Fe = 56 ; Cl = 35]
Berdasarkan persamaan kimia pada (e)(i), hitungkan jisim maksimum
ferum(III) klorida yang terbentuk apabila 0.05 mol ferum digunakan dalam
tindak balas.
[Jisim atom relatif : Fe = 56 ; Cl = 35]
[1 mark]
[1 mark]

SULIT 4541/2
6
(iii) Diagram 2.2 shows the apparatus set-up for three different experiments.
Mark (√ ) in the box which shows the correct apparatus set-up for the reaction
between chlorine gas, Cl2 and hot iron wool.
Rajah 2.2 menunjukkan susunan radas untuk tiga eksperimen berbeza.
Tanda (√ ) dalam petak yang menunjukkan susunan radas yang betul bagi
tindak balas antara gas klorin, Cl2 dengan wul besi panas.
Diagram 2.2
Rajah 2.2
[1 mark]
[1 markah]
Chlorine gas
Gas klorin
Hot iron wool
Wul besi panasHeat
Panaskan
Hot iron wool
Wul besi panasHeat
Panaskan
Chlorine gas
Gas klorin
Chlorine gas
Gas klorin
Hot iron wool
Wul besi panas
Heat
Panaskan

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7
3 (a) Diagram 3.1 shows the standard representation of carbon-14 atom.
Rajah 3.1 menunjukkan perwakilan piawai bagi atom karbon-14.
Diagram 3.1
Rajah 3.1
(i) State the proton number of carbon-14 atom.
Nyatakan nombor proton bagi atom karbon-14.
.......................…………………………………………………………...………
[1 mark]
[1 markah]
(ii) State one use of carbon-14.
Nyatakan satu kegunaan karbon-14.
...………………………………………………………………………………...
[1 mark]
[1 markah]
(iii) Carbon has three isotopes. State another isotope other than carbon-14.
Karbon mempunyai tiga isotop. Nyatakan satu lagi isotop selain daripada
karbon-14.
...………………………………………………………………………………...
[1 mark]
[1 markah]
(iv) Determine the number of neutrons for the isotope in (a)(iii).
Tentukan bilangan neutron bagi isotop dalam (a)(iii).
...………………………………………………………………………………...
[1 mark]
[1 markah]
C14
6

SULIT 4541/2
8
(b) Hydrogen reacts with chlorine to form compound A whereas potassium reacts
with chlorine to form compound B.
Diagram 3.2 shows the electron arrangement of compound A and compound B.
Hidrogen bertindak balas dengan klorin untuk membentuk sebatian A manakala
kalium bertindak balas dengan klorin untuk membentuk sebatian B.
Rajah 3.2 menunjukkan susunan elektron bagi sebatian A dan sebatian B.
Compound A Compound B
Sebatian A Sebatian B
Diagram 3.2
Rajah 3.2
(i) State the type of compounds.
Nyatakan jenis sebatian tersebut.
A: ………………………………………………………………………………..
B: ………………………………………………………………………………..
[2 marks]
[2 markah]
(ii) Write the electron arrangement of atom K
Tuliskan susunan elektron bagi atom K.
…………………………………………………………………………………...
[1 mark]
[1 markah]
(iii) State one physical property of compound B.
Nyatakan satu sifat fizik bagi sebatian B.
....………………………………………………………………………………...
[1 mark]
[1 markah]
(iv) Write a balance chemical equation to represent the formation of compound B.
Tuliskan satu persamaan kimia yang seimbang untuk mewakili pembentukan
sebatian B.
………………………………………………………………………………...…
[2 marks]
[2 markah]
H Cl ClK
+ -

SULIT 4541/2
SULIT
9
4 Diagram 4.1 shows the apparatus used in the titration process between an aqueous
potassium hydroxide solution and dilute sulphuric acid using indicator A.
Rajah 4.1 menunjukkan proses pentitratan antara larutan akueus kalium hidroksida
dengan asid sulfurik cair dengan menggunakan penunjuk A.
Diagram 4.1
Rajah 4.1
(a) Name
Namakan:
(i) Apparatus P
Radas P : ....................................................................................................
(ii) Indicator A
Penunjuk A : ....................................................................................................
[2 marks]
[2 markah]
(iii) Based on answer in (a)(ii), state the colour change of the solution in conical
flask at the end point.
Berdasarkan jawapan di (a)(ii), nyatakan perubahan warna larutan dalam
kelalang kon pada takat akhir.
..............................................................................................................................
[1 mark]
[1 markah]
25.0 cm3
of 1.0 mol dm-3
potassium
hydroxide solution
25.0 cm3
larutan kalium hidroksida
1.0 mol dm-3
25.0 cm3
of 1.0 mol dm-3
potassium hydroxide
solution + indicator A
25.0 cm3
larutan kalium hidroksida 1.0 mol
dm-3
+ penunjuk A.
Apparatus P
Radas P Dilute sulphuric acid
Asid sulfurik cair

SULIT 4541/2
10
(b) (i) Write a balanced chemical equation for the reaction between potassium
hydroxide solution with sulphuric acid.
Tulis persamaan kimia yang seimbang bagi tindak balas antara larutan
kalium hidrosida dengan asid sulfurik.
..............................................................................................................................
[2 marks]
[2 markah]
(ii) In this experiment, 10.00 cm3
of dilute sulphuric acid was needed to neutralise
completely 25.0 cm3
of 1.0 mol dm-3
potassium hydroxide solution.
Calculate the molarity of the dilute sulphuric acid.
Dalam eksperimen ini, 10.00 cm3
asid sulfurik cair diperlukan untuk
meneutralkan dengan lengkap 25.0 cm3
larutan kalium hidroksida
1.0 mol dm-3
. Hitung kemolaran asid sulfurik cair.
[2 marks]
[2 markah]

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11
(c) Table 4.2 shows ethanoic acid, CH3COOH in three different states and the
observations that obtained when tested with moist blue litmus paper.
Jadual 4.2 menunjukkan asid etanoik yang berada dalam tiga keadaan berbeza dan
pemerhatian yang diperolehi apabila diuji dengan kertas litmus biru lembab.
Experiment
Eksperimen
State of ethanoic acid
Keadaan asid etanoik
Observation on blue
litmus paper
Pemerhatian pada kertas
litmus biru
I
Glacial ethanoic acid
Asid etanoik glasial
No change
Tiada perubahan
II
Ethanoic acid in water
Asid etanoik dalam air
Blue to red
Biru kepada merah
III
Ethanoic acid in dry propanone,
Asid etanoik dalam propanon kontang
No change
Tiada perubahan
Table 4.2
Jadual 4.2
(i) Name the ion which is responsible for changing the colour of blue litmus
paper to red.
Namakan ion yang menyebabkan perubahan pada warna kertas litmus biru
kepada merah.
..............................................................................................................................
[1 mark]
[1 markah]
(ii) Explain why there is no change on blue litmus paper in Experiment III.
Terangkan mengapa tiada perubahan pada kertas litmus biru dalam
Eksperimen III.
..............................................................................................................................
..............................................................................................................................
..............................................................................................................................
[2 marks]
[2 markah]

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12
5 (a) What is the meaning of empirical formula?
Apakah maksud formula empirik?
…………………………………………………………………………………………
[1 mark]
[1 markah]
(b) Table 5.1 shows the result for an experiment to determine the empirical formula of
magnesium oxode.
Jadual 5.1 menunjukkan keputusan bagi satu ekperimen untuk menentukan formula
empirik bagi magnesium oksida.
Description
Penerangan
Mass, g
Jisim,g
Mass of crucible + lid
Jisim mangkuk pijar + penutup
35.4
Mass of crucible + lid + magnesium ribbon
Jisim mangkuk pijar + penutup + pita magnesium
37.8
Mass of crucible + lid + magnesium oxide
Jisim mangkuk pijar + penutup + magnesium oksida
39.4
Table 5.1
Jadual 5.1
(i) Base on table, calculate the mass of
Berdasarkan jadual, hitungkan jsim bagi
Magnesium :
Magnesium
Oxygen :
Oksigen
[1 mark]
[1 markah]
(ii) Calculate the mole ratio of magnesium atoms to oxygen atoms.
Hitungkan nisbah mol bagi atom magnesium kepada atom oksigen.
[Relative atomic mass: O = 16, Mg = 24]
[Jisim Atom Relatif: O = 16, Mg = 24]
[2 marks]
[2 markah]

SULIT 4541/2
SULIT
13
(v) Determine the empirical formula of magnesium oxide.
Hitungkan formula empirik magnesium oksida.
…………………………………………………………………………………..
[1 mark]
[1 markah]
(vi) When carrying out the experiment, why does the crucible lid need to be
opened once in a while?
Semasa menjalankan eksperimen ini, mengapakah penutup mangkuk pijar
dibuka sekali sekala.
…………………………………………………………………………………..
…………………………………………………………………………………..
[1 mark]
[1 markah]
(vii) How to ensure all magnesium has completely reacted?
Bagaimana untuk memastikan semua magnesium bertindakbalas dengan
lengkap?
…………………………………………………………………………………..
…………………………………………………………………………………..
[1 mark]
[1 markah]
(c) Draw an apparatus set-up to carry out this experiment.
Lukis susunan radas untuk menjalankan eksperimen ini.
[2marks]
[2 markah]

SULIT 4541/2
14
(d) (i) State the name of another metal oxide whose empirical formula can be
determined using the same technique.
Nyatakan nama suatu logam oksida lain yang formula empiriknya boleh
ditentukan menggunakan teknik ini.
…………………………………………………………………………………..
[1 mark]
[1 markah]
(ii) State why the empirical formula of silver oxide cannot be determine by using
the same technique.
Nyatakan mengapa formula empirik bagi argentum oksida tidak dapat
ditentukan dengan menggunakan teknik yang sama.
…………………………………………………………………………………..
…………………………………………………………………………………..
[1 mark]
[1 markah]
6 Diagram 6.1 shows the conversion of but-2-ene to hydrocarbon Y through Process X at
180o
C with the presence of nickel as a catalyst.
Rajah 6.1 menunjukkan pertukaran but-2-ena kepada hidrokarbon Y melalui Proses X
pada 180o
C dengan kehadiran nikel sebagai mangkin.
Diagram 6.1
Rajah 6.1
(a) Name process X.
Namakan proses X.
.............…………………………………………………………...……………………..
[1 mark]
[1 markah]
Process X
Proses X
180o
C/ Nickel
But-2-ene
But-2-ena
Y

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15
(b) Write the chemical equation to represent process X.
Tuliskan persamaan kimia untuk mewakili proses X..
.............…………………………………………………………………………...……...
[1 mark]
[1 markah]
(c) 28 g of but-2ene is completely burnt in oxygen.
The chemical equation below shows the combustion of but-2-ene.
[Relative atomic mass: C=12, O = 16, H = 1;
Molar volume of gas= 24 dm3
mol at room condition ]
28 g but-2-ena terbakar dengan lengkap dalam oksigen.
Persamaan kimia di bawah menunjukkan pembakaran but-2-ena.
[Jisim Atom Relatif: C=12, O = 16, H = 1;
Isi padu molar gas = 24 dm3
mol pada keadaan bilik]
C4H8 + 6O2  4CO2 + 4 H2O
(i) Calculate the number of moles of but-2-ene burnt.
Hitungkan bilangan mol but-2ena yang terbakar.
[1 mark]
[1 markah]
(ii) Calculate the volume of carbon dioxide gas produced.
Hitungkan isi padu gas karbon dioksida yang terhasil.
[2 marks]
[2 markah]

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16
(d) Describe a chemical test to differentiate but-2-ene and hydrocarbon Y.
Terangkan satu ujian kimia bagi membezakan but-2-ena dan hidrokarbon Y.
.............…………………………………………………………...……………………..
.............…………………………………………………………...……………………..
.............…………………………………………………………...……………………..
.............…………………………………………………………...……………………..
[3 marks]
[3 markah]
(e) Diagram 6.2 below shows two types of rubbers, Rubber Type A and Rubber Type B.
Rajah 6.2 di bawah menunjukkan dua jenis getah. Jenis Getah A dan Jenis Getah B.
Diagram 6.2
Rajah 6.2
Rubber Type A
Jenis Getah A
Rubber Type B
Jenis Getah B

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17
(i) Identify the type of rubbers A and B.
Kenalpasti jenis getah A dan B.
A: ……………………………………………………………………………….
B: ……………………………………………………………………………….
[2 marks]
[2 markah]
(ii) Compare the elasticity of rubber type A and rubber type B.
Bandingkan keelastikan getah jenis A dengan getah jenis B.
…………………………………………………………………………………
[1 mark]
[1 markah]

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18
Section B
Bahagian B
[20 marks]
[20 markah]
Answer any one question.
Jawab mana-mana satu soalan daripada bahagian ini.
7 (a) Table 7.1 shows a series of experiment carried out to construct the electrochemical
series. The positive terminal and value for potential difference for the pair of metals X
and copper, Cu are not given. W, X and Y are not the actual symbols of the metals.
Jadual 7.1 menunjukkan keputusan satu siri eksperimen yang dijalankan untuk
membina siri elektrokimia.
Terminal positif dan nilai beza keupayaan logam X dan kuprum, Cu tidak diberi. W,X
dan Y bukan simbol sebenar logam-logam itu.
Pair of metals
Pasangan logam
Positive terminal
Terminal positif
Potential difference (V)
Beza keupayaan (V)
W, X X 1.6
X, Y Y 0.4
W, Cu Cu 2.9
X, Cu
Table 7.1
Jadual 7.1
(i) Based on the values of the potential differences, arrange the metals in ascending
order in the electrochemical series.
Berdasarkan nilai beza keupayaan, susun logam-logam tersebut dalam tertib
menurun dalam siri elektrokimia.
[1mark]
[1 markah]
(ii) Predict the positive terminal and the value of potential difference for the pair of
metals X and Cu. Explain your answer.
Ramal terminal positif dan nilai beza keupayaan untuk pasangan logam X dan
Cu. Terangkan jawapan anda.
[3marks]
[3 markah]

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19
(b ) Diagrams 7.3 and 7.4 show the apparatus set-up used in two experiments to
electrolyse molten lead(II) chloride and 0.0001 mol dm-3
hydrochloric acid.
Rajah 7.3 dan 7.4 menunjukkan susunan radas yang digunakan dalam dua
eksperimen untuk menjalankan elektrolisis ke atas leburan plumbum(II) klorida dan
asid hidroklorik 0.0001 mol dm-3
.
Experiment
Eksperimen
Diagram
Rajah
I
Diagram 7.3
Rajah 7.3
II
Diagram 7.4
Rajah 7.4
Carbon electrodes
Elektrod karbon
Carbon electrodes
Elektrod karbon
Lead(II) chloride
Plumbum(II) klorida
0.0001 mol dm-3
of
hydrochloric acid
Asid hidroklorik
0. 0001 mol dm-3
Heat
Haba
Test tube
Tabung uji

SULIT 4541/2
20
(i) Write the formulae of all ions present in both electrolytes in Experiment I
and Experiment II.
Tuliskan semua formula ion yang hadir dalam kedua-dua elektrolit pada
Eksperimen II dan Eksperimen II
[2 marks]
[2 markah]
(ii) Different products are formed at electrodes in both experiments.
 State the products formed at the anode of Experiment I and Experiment II.
 Explain how the products are formed and state the reason
 Write the half equations at the anodes
Hasil tindak balas yang berbeza terbentuk di elektrod pada kedua-dua ekperimen ini.
 Nyatakan hasil yang terbentuk di anod pada Eksperimen I dan Eksperimen II.
 Terangkan bagaimana hasil ini terbentuk dan berikan sebab
 Tuliskan setengah persamaan di anod
[10 marks]
[10 markah]
( c ) Diagram 7.2 shows a voltaic cell. Metal R is situated below copper in the
electrochemical series.
Rajah 7.2 menunjukkan suatu sel voltan. Logam R terletak di bawah kuprum dalam
siri elektrokimia.
Diagram 7.2
Rajah 7.2
State the positive terminal and negative terminal of this cell.
Suggest a metal that is suitable as metal R and a solution that is suitable as solution R.
Nyatakan terminal positif dan terminal negatif bagi sel ini.
Cadangkan logam yang sesuai bagi R dan larutan yang sesuai untuk larutan R.
[4 marks]
[4 markah]
Copper
Kuprum
Metal R
Logam R
Copper(II) nitrate
Kuprum(II) nitrat Solution R
Larutan R

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8 (a) The smaller-sized potatoes will cook faster than the bigger-sized ones.
Explain why.
Kentang bersaiz kecil masak lebih cepat daripada bersaiz besar.
Terangkan mengapa.
[4 marks]
[4 markah]
(b) A group of students carried out two experiments to investigate the factor affecting
the rate of reaction between zinc powder and hydrochloric acid, HCl.
Diagram 8 shows the set-up of apparatus used in the experiments.
Sekumpulan pelajar menjalankan dua eksperimen untuk mengkaji faktor yang
mempengaruhi kadar tindak balas antara serbuk zink dengan asid hidroklorik, HCl.
Rajah 8 menunjukkan susunan radas yang digunakan dalam kedua-dua eksperimen
itu.
Diagram 1
Rajah 1
Experiment
Eksperimen
Apparatus set-up
Susunan radas
Volume of hydrogen gas
released in the first 2 minutes
Isi padu gas terbebas dalam
masa 2 minit pertama
I
II
100 cm3
of
0.1 mol dm-3
HCl
Zinc powder + substance X
Serbuk zink + bahan X
100 cm3
of
0.1 mol dm-3
HCl
Zinc powder
Serbuk zink
40 cm3
of gas
40 cm3
gas
60 cm3
of gas
60 cm3
gas

SULIT 4541/2
22
(i) In the presence of substance X in Experiment II, the higher volume of gas is
released in the first 2 minutes compared to Experiment I.
State one substance that can be used as substance X.
Dengan kehadiran bahan X dalam Eksperimen II, isi padu gas yang terbebas
dalam dua minit pertama adalah lebih tinggi.
Nyatakan satu bahan yang boleh digunakan sebagai bahan X.
[1 mark]
[1 markah]
(ii) Calculate the average rate of reaction in Experiment I and Experiment II in the
first 2 minutes.
Hitung kadar tindak balas purata bagi Eksperimen I dan Eksperimen II dalam
masa 2 minit pertama .
[2 marks]
[2 markah]
(iii) Compare the rate of reaction between Experiment I and Experiment II.
Explain your answer based on collision theory.
Banding kadar tindak balas antara Eksperimen I dan Eksperimen II.
Jelaskan jawapan anda berdasarkan kepada teori perlanggaran.
[5 marks]
[5 markah]
(iv) Sketch a graph of volume of the gas released against time for both sets of
experiments in the first 2 minutes.
Lakar graf isi padu gas terbebas melawan masa bagi kedua-dua set eksperimen
dalam masa 2 minit pertama.
[2 marks]
[2 markah]
(v) Write an ionic equation for the reaction between zinc powder and hydrochloric
acid.
Tulis persamaan ion bagi tindak balas antara serbuk zink dan asid hidroklorik.
[2marks]
[2 markah]
(vi) Hydrochloric acid in Experiment I is replaced with sulphuric acid with the same
volume and concentration. Compare the rate of reaction and the maximum
volume of hydrogen gas released between these two experiments.
Explain your answer.
Asid hidroklorik dalam Eksperimen I digantikan dengan asid sulfurik yang
mempunyai isi padu dan kepekatan yang sama. Bandingkan kadar tindak balas
dan isi padu maksimum gas hidrogen yang terbebas antara kedua-dua
eksperimen ini.
Terangkan jawapan anda.
[4 marks]
[4 markah]

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23
Section C
Bahagian C
[20 marks]
[20 markah]
Answer any one question.
Jawab mana-mana satu soalan daripada bahagian ini.
9 (a) The chemical equation below shows a redox reaction.
Persamaan kimia berikut menunjukkan tindak balas redoks.
Mg (s) + CuSO4(aq)  Cu(s) + MgSO4(aq)
Mg (p) + CuSO4(ak)  Cu(p) + MgSO4(ak)
Explain the redox reaction in terms of change in oxidation number.
Terangkan tindak balas redoks yang berlaku dari aspek perubahan nombor
pengoksidaan. [4 marks]
[4 markah]
(b) An experiment is carried out to determine the position of metals L, M and copper
in the reactivity series.
Diagram 9 shows the results of the experiment.
Satu eksperimen dijalankan untuk menentukan kedudukan logam L, logam M dan
kuprum dalam siri kereaktifan.
Rajah 9 menunjukkan keputusan bagi eksperimen tersebut.
Experiment
Eksperimen
I
L + copper(II)
oxide
L+ kuprum(II)
oksida
II
M + copper(II)
oxide
M + kuprum(II)
oksida
III
M + L oxide
M + oksida L
.
Observation
Pemerhatian
Black powder
turns brown
Serbuk hitam
menjadi perang
Black powder turns
brown
Serbuk hitam
menjadi perang
No change
Tiada perubahan
Diagram 9
Rajah 9

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24
Based on the results in the experiment, arrange the three metals in order of increasing
reactivity toward oxygen. Explain your answer.
Bedasarkan kepada keputusan dalam eksperimen itu, susun tiga logam tersebut
mengikut turutan menaik kereaktifan terhadap oksigen. Terangkan jawapan anda.
[6 marks]
[6 markah]
(c) You are required to investigate the oxidation and reduction in the displacement of
halogens from its halide solution. The chemicals provided are;
 potassium chloride solution
 potassium bromide solution
 potassium iodide solution
 chlorine water
 bromine water
 iodine solution
 1,1,1 trichloroethane
Describe a laboratory experiment to compare the ability of halogens as oxidizing
agent. In your description include
 procedure
 observation
 ionic equation
[10 marks]
Anda dikehendaki menyiasat pengoksidaan dan penurunan dalam tindak balas
penyesaran halogen daripada larutan halidanya. Bahan-bahan kimia yang dibekalkan
ialah;
 larutan kalium klorida
 larutan kalium bromida
 larutan kalium iodida
 air klorin
 air bromin
 larutan iodin
 1,1,1 trikloroetana
Huraikan satu eksperimen makmal untuk membandingkan keupayaan halogen
sebagai agen pengoksidaan. Dalam huraian anda, sertakan
 prosedur,
 pemerhatian
 persamaan ion
[10 markah]

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25
10 (a) Solution X is added to solution Y to form barium sulphate. State the name of the
reaction and the name of solution X and solution Y.
Write the ionic equation for the reaction.
Larutan X ditambahkan kepada larutan Y untuk membentuk barium sulfat. Nyatakan
nama bagi tindak balas itu dan nama bagi larutan X dan larutan Y.
Tulis persamaan ion untuk tindak balas itu.
[4 marks]
[4 markah]
(b) (i) A student carries out a chemical test to identify the cation and anion in solution Q.
Table 10 shows the result of the chemical test.
Seorang pelajar menjalankan ujian kimia untuk mengenalpasti kation dan anion
dalam larutan Q.
Jadual 10 menunjukkan keputusan ujian kimia itu.
Chemical test
Ujian kimia
Observation
Pemerhatian
2 cm3
of ammonia aqueous is added to
the solution Q in a test tube until in
excess.
2 cm3
ammonia akueus ditambahkan
kepada larutan Q dalam sebuah tabung
uji sehingga berlebihan.
A green precipitate is formed. The
precipitate is insoluble in excess of
ammonia aqueous.
Mendakan hijau terbentuk. Mendakan
tidak larut dalam larutan ammonia
akueus berlebihan.
2 cm3
of hydrochloric acid is added to
the solution Q and follow by
2 cm3
of silver nitrate solution.
2 cm3
asid hidroklorik ditambahkan
kepada larutan Q dan diikuti dengan
2 cm3
larutan argentum nitrat.
A white precipitate is formed.
Satu mendakan putih terbentuk..
Table 10
Jadual 10
Based on Table 10, identify the cation and anion in solution Q.
Bedasarkan Jadual 10, kenal pasti kation dan anion dalam larutan Q.
[2 marks]
[2 markah]

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26
(ii) Diagram 10 shows a solution in a bottle.
Rajah 10 menunjukkan satu larutan dalam sebuah botol.
Diagram 10
Rajah 10
Describe a chemical test to confirm the anion that present in the
solution.
Huraikan satu ujian kimia untuk mengesahkan anion yang hadir dalam
larutan itu.
[4 marks]
[4 markah]
(c) You are required to prepare a dry zinc sulphate salt. The chemicals supplied are:
Anda dikehendaki menyediakan garam zink sulfat yang kering. Bahan kimia
yang dibekalkan ialah:
 Zinc nitrate solution
Larutan zink nitrat
 Dilute sulphuric acid
Asid sulfurik cair
 Sodium carbonate solution
Larutan natrium karbonat
Describe a laboratory experiment to prepare the salt. In your description,
include the chemical equations involved.
Huraikan satu eksperimen makmal untuk menyediakan garam tersebut.
Dalam huraian anda, sertakan persamaan yang terlibat.
[10 marks]
[10 markah]
KERTAS SOALAN TAMAT
Lead(II)
nitrate
Plumbum(II)
nitrat

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27

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28
INFORMATION FOR CANDIDATES
MAKLUMAT UNTUK CALON
1 This question paper consists of three sections: Sections A, Section B and Section C.
Kertas soalan ini mengandungi tiga bahagian: Bahagian A, Bahagian B dan Bahagian C.
2 Answer all questions in Section A. Write your answers for Section A in the spaces provided in
the question paper.
Jawab semua soalan dalam Bahagian A. Jawapan anda bagi Bahagian A hendaklah ditulis
dalam ruang yang disediakan dalam kertas soalan
3 Answer any one question from Section B and any one question from Section C.
Write your answers for Section B and Section C on the `helaian tambahan’ provided by the
invigilators. You may use equations, diagrams, tables, graphs and other suitable methods to
explain your answers.
Jawab mana-mana satu soalan daripada Bahagian B dan mana-mana satu soalan daripada
Bahagian C. Tulis jawapan anda bagi Bahagian B dan Bahagian C dalam helaian tambahan
yang dibekalkan oleh pengawas peperiksaan. Anda boleh menggunakan persamaan, rajah,
jadual, graf dan cara lain yang sesuai untuk menjelaskan jawapan anda.
4 The diagrams in the questions are not drawn to scale unless stated.
Rajah yang mengiringi soalan tidak dilukiskan mengikut skala kecuali dinyatakan
5 Marks allocated for each question or part question are shown in brackets.
Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan dalam kurungan
6 Show your working. It may help you to get marks.
Tunjukkan kerja mengira.Ini membantu anda mendapatkan markah.
7 If you wish to change your answer, cross out the answer that you have done. Then write down the
new answer.
Sekiranya anda hendak menukar jawapan, batalkan jawapan yang telah dibuat. Kemudian tulis
jawapan yang baru.
8 The Periodic Table of Elements is provided.
Jadual Berkala Unsur disediakan.
9 You may use a non-programmable scientific calculator.
Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogramkan.
10 You are advised to spend 90 minutes to answer questions in Section A, 30 minutes for Section B
and 30 minutes for Section C.
Anda dinasihati supaya mengambil masa 90 minit untuk menjawab soalan dalam Bahagian A
ialah 90 minit, 30 minit untuk Bahagian B dan 30 minit untuk Bahagian C.
11 Hand in your answer sheets at the end of the examination.
Serahkan semua kertas jawapan anda di akhir peperiksaan.

SULIT 1 4541/3
4541/3 © 2012 Hak Cipta BPSBPSK [Lihat halaman sebelah
SULIT
Nama: ……………………………………………. Tingkatan: ………………………….
CHEMISTRY
Kertas 3
1 JAM 30 MINIT
Arahan:
1. Kertas soalan ini adalah dalam dwibahasa.
2. Soalan dalam bahasa Inggeris mendahului soalan
yang sepadan dalam bahasa Melayu.
3. Kertas soalan ini mengandungi 2 soalan struktur
dan 1 soalan esei.
4. Calon dikehendaki membaca maklumat di halaman
belakang kertas soalan ini.
5. Jawab soalan 1 dan 2 di ruangan yang disediakan.
Kertas soalan ini mengandungi 14 halaman bercetak
Untuk Kegunaan Pemeriksa
Soalan Markah
Penuh
Markah
Diperoleh
1 27
2 6
3 17
Jumlah 50
SULIT
4541/3
CHEMISTRY
Kertas 3
Ogos
2012
1jam 30 minit

SULIT 2 4541/3
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1. Diagram 1.1 shows the apparatus set-up to carry out an experiment to compare
the hardness of bronze and its pure metal, copper.
Rajah 1.1 menunjukkan gambarajah susunan radas untuk membandingkan
kekerasan gangsa dengan logam tulennya, kuprum.
Diagram 1.1
Rajah 1.1
The experiment was carried out according to the following steps:
Eksperimen itu dijalankan mengikut langkah-langkah berikut:
Step 1
Langkah 1
Cellophane tape was used to stick a steel ball bearing onto the
copper block.
Pita selofen digunakan untuk melekatkan bebola keluli di atas
bongkah kuprum.
Step 2
Langkah 2
A 1.0 kg weight was hanged at a height of 50 cm above the ball
bearing as shown in Diagram 1.1.
Pemberat 1.0 kg digantung pada ketinggian 50 cm di atas bebola
keluli seperti yang ditunjukkan dalam Rajah 1.1.
Step 3
Langkah 3
The weight was dropped so that it hit the ball bearing.
Pemberat itu dijatuhkan ke atas bebola keluli tersebut.
Step 4
Langkah 4
The diameter of dent made on the copper block was measured and
the reading was recorded.
Diameter lekuk yang terbentuk pada bongkah kuprum diukur dan
bacaannya direkodkan.

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SULIT
Step 5
Langkah 5
Step 1 to step 4 was repeated twice on the other parts of the same
copper block to get another dents.
Langkah 1 hingga 4 diulang sebanyak dua kali di atas bahagian
lain bongkah kuprum untuk mendapatkan lekuk yang lain.
Step 6
Langkah 6
Step 1 to step 5 was repeated by replacing the copper block with
the bronze block.
Langkah 1 hingga 5 diulang dengan menggantikan bongkah
kuprum dengan bongkah gangsa.
Diagram 1.2 shows the shape of dents formed for the experiment.
Rajah 1.2 menunjukkan lekuk yang terbentuk bagi eksperimen itu.
Diagram 1.2
Rajah 1.2
Copper block
Blok kuprum
Steel ball bearing
Bebola keluli

SULIT 4 4541/3
SULIT
Table 1.1(a) shows the three dents formed on the copper block.
Jadual 1.1(a) menunjukkan tiga lekuk yang terhasil di atas bongkah kuprum.
Sets
Set
Diagram of the dents formed
Rajah lekuk yang terbentuk.
Diameter of the
dent (cm)
Diameter lekuk
(cm)
I ...................
II ...................
III .....................
Table 1.1(a)
Jadual 1.1(a)
Copper block
Blok kuprum
Ruler
Pembaris
Copper block
Blok kuprum
Ruler
Pembaris
Copper block
Blok kuprum
Ruler
Pembaris

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SULIT
Table 1.1(b) shows the three dents formed on the bronze block.
Jadual 1.1(b) menunjukkan tiga lekuk yang terhasil di atas bongkah gangsa.
Sets
Set
Diagram of the dents formed
Rajah lekuk yang terbentuk.
Diameter of the
dent (cm)
Diameter lekuk
(cm)
I .....................
II .....................
III .....................
Table 1.1 (b)
Jadual 1.1(b)
Bronze block
Blok gangsa
Ruler
Pembaris
Bronze block
Blok gangsa
Ruler
Pembaris
Bronze block
Blok gangsa
Ruler
Pembaris

SULIT 6 4541/3
SULIT
(a) By using a ruler given, measure the diameter of dents and record in Table 1.1(a)
and 1.1(b).
Dengan menggunakan pembaris yang diberikan, ukur diameter lekuk dan
catatkan dalam Jadual 1.1(a) dan 1.1(b)
[3 marks]
[3 markah]
For examiner’s
use
1(a)
(b) Construct a table to record the diameters and the average diameter of dents on
copper and bronze blocks.
Bina satu jadual untuk merekod diameter lekuk-lekuk dan purata diameter lekuk
pada bongkah kuprum dan bongkah gangsa.
[3 marks]
[3 markah]
1(b)
(c) (i) State one observation that can be obtained from both experiments.
Nyatakan satu pemerhatian yang dapat diperoleh daripada kedua-dua
eksperimen ini.
……………………………………………………………………………….
……………………………………………………………………………….
……………………………………………………………………………….
[3 marks]
[3 markah]
1(c)(i)

SULIT 7 4541/3
SULIT
(ii) What is your inference based on your answer in (c)(i).
Apakah inferens berdasarkan jawapan anda dalam (c)(i).
………………………………………………………………………………
………………………………………………………………………………
………………………………………………………………………………
[3 marks]
[3 markah]
For examiner’s
use
1(c)(ii)
(iii) The average diameter of dents of bronze block is different from the copper
block due to the arrangement of particles. Explain why.
Purata diameter lekuk blok gangsa adalah berbeza dengan blok kuprum
disebabkan oleh susunan zarah-zarah. Terangkan mengapa.
……………………………………………………………………………….
……………………………………………………………………………….
……………………………………………………………………………….
[3 marks]
[3 markah]
1(c)(iii)
(d) For this experiment, state :
Bagi eksperimen ini, nyatakan :
(i) The manipulated variable
Pemboleh ubah dimanipulasikan
………………………………………………………………………………...
(ii) The responding variable
Pemboleh ubah bergerak balas
………………………………………………………………..........................
(iii) The fixed variable
Pemboleh ubah dimalarkan
……………………………………………………………………………………
[3 marks]
[3 markah]
1(d)

SULIT 8 4541/3
SULIT
(e) (i) State one hypothesis for this experiment
Nyatakan satu hipotesis bagi eksperimen ini.
……………………………………………………………………………….
……………………………………………………………………………….
……………………………………………………………………………….
[3 marks]
[3 markah]
For examiner’s
use
1(e)(i)
(ii) State the operational definition for the hardness of materials in the
experiment
Nyatakan definisi secara operasi bagi kekerasan bahan dalam eksperimen
ini.
……………………………………………………………………………….
……………………………………………………………………………….
……………………………………………………………………………….
[3 marks]
[3 markah]
1(e)(ii)

SULIT 9 4541/3
SULIT
(f) The following is a list of substances:
Berikut ialah senarai beberapa bahan:
For examiner’s
use
Iron Steel Chromium
Besi Keluli Kromium
Brass Pewter Tin
Loyang Piuter Timah
Classify these substances into alloy and pure metal.
Kelaskan bahan-bahan ini kepada aloi dan logam tulen
[3 marks]
[3 markah]
1(f)
TOTAL

SULIT 10 4541/3
SULIT
2
Diagram 2
Rajah 2
Diagram 2 shows the apparatus set-up for experiment to determine the heat of
combustion of methanol. 200 cm3
of water is used in this experiment. The
experiment was repeated twice by using ethanol and propanol to replace methanol.
Rajah 2 menunjukkan susunan radas bagi eksperimen untuk menentukan haba
pembakaran metanol. 200 cm3
air digunakan dalam eksperimen ini. Eksperimen
telah diulang sebanyak dua kali dengan menggunakan etanol dan propanol untuk
menggantikan metanol.
For examiner’s
use
Graph 2 shows the heat of combustion of alcohols against the number of carbon atom
per molecule of alcohols from the experiment.
Graf 2 menunjukkan haba pembakaran bagi alkohol melawan bilangan atom karbon
per molekul daripada eksperimen itu.

SULIT 11 4541/3
SULIT
Graph 2
Graf 2
(a) Based on Graph 2, predict the heat of combustion of butanol.
Berdasarkan Graf 2, ramalkan haba pembakaran butanol.
……………………………………………………………………………………..
[3 marks]
[3 markah]
2(a)
Number of carbon atom per molecule of alcohols
Bilangan atom karbon per molekul alkohol
Heat of combustion/ kJ mol-1
Haba pembakaran/ kJ mol-1
4
500
1000
1500
2000
2500
3000
3500
3210
For examiner’s use

SULIT 12 4541/3
SULIT
(b) Table 2 shows the fuel value of alcohols. It also shows the time needed for
cooking the same type of food.
Jadual 2 menunjukkan nilai bahan api alkohol. Ia juga menunjukkan masa
yang diperlukan untuk memasak makanan yang sama.
For examiner’s
use
Alcohols
Alkohol
Fuel value (kJg-1
)
Nilai bahan api (kJg-1
)
Time for cooking
Masa untuk memasak
Methanol 22.75 Slow
Ethanol 29.91 Medium
Propanol 33.60 Fast
Table 2
Jadual 2
State the relationship between the type of alcohols and time needed for cooking.
Nyatakan hubungan di antara jenis alkohol dengan masa yang diperlukan untuk
memasak.
……………………………………………………………………………………..
……………………………………………………………………………………..
[3 marks]
[3 markah]
2(b)
TOTAL

SULIT 13 4541/3
SULIT
3. Diagram 3 shows one method used to prevent the rusting of iron.
Rajah 3 menunjukkan satu kaedah mencegah pengaratan besi.
Diagram 3
Rajah 3
Table 3 shows the observations when iron is in contact with different type of metals for a few
days.
Jadual 3 menunjukkan pemerhatian apabila besi bersentuhan dengan logam-logam yang
berbeza selama beberapa hari.
Metal in contact with iron
Logam yang bersentuhan dengan besi
Observation
Pemerhatian
Metal R
Logam R
Blue colour is formed
Warna biru terbentuk
Metal S
Logam S
Pink colour is formed
Warna merah jambu terbentuk
Table 3
Jadual 3
Based on above information, plan one experiment to investigate the effect of other metals on the
rusting of iron.
Berdasarkan maklumat di atas, rancang satu eksperimen untuk mengkaji kesan logam-logam
lain ke atas pengaratan besi.
Metal bars
Bar magnesium
Wayar penyambung
Batang paip besi

SULIT 14 4541/3
SULIT
Your planning should include the following aspects;
Perancangan anda mestilah meliputi aspek-aspek berikut;
(a) Problem statement
Pernyataan masalah
(b) All the variables
Semua pemboleh ubah
(c) Statement of the hypothesis
Pernyataan hipotesis
(d) List of substances and apparatus
Senarai bahan-bahan kimia dan alat radas
(e) Procedure for the experiment
Prosedur eksperimen
(f) Tabulation of data
Penjadualan data
[17 marks]
KERTAS SOALAN TAMAT

1
CHEMISTRY
TRIAL-EXAM
SPM 2012
MARKING SCHEME
PAPER 1
PAPER 2
PAPER 3

2
SKEMA KERTAS 1
PENTAKSIRAN DIAGNOSTIK AKADEMIK
SBP 2012
CHEMISTRY 4541/1
1 A 26 C
2 A 27 D
3 C 28 C
4 A 29 D
5 A 30 B
6 D 31 B
7 B 32 C
8 A 33 A
9 B 34 C
10 A 35 C
11 B 36 D
12 A 37 A
13 D 38 B
14 C 39 B
15 D 40 D
16 A 41 D
17 B 42 D
18 D 43 A
19 C 44 B
20 B 45 C
21 C 46 B
22 D 47 C
23 D 48 B
24 B 49 D
25 A 50 C

3
MARKING SCHEME
CHEMISTRY PAPER 2 SECTION A (4541/2)
Question Mark scheme Sub
Mark
Total
Mark
1(a) A: Detergents
B: Soap
r : sodium salt
1
1 2
1(b)(i) magnesium ion // or calcium ion
r : Mg2+
, Ca2+
1
2
1(b)(ii) Soaps are biodegradable 1
1(c) Analgesics
Psychotherapeutic
r: wrong spelling
1
1 2
1(d)(i) Sugar
Aspartame
1
1
3
1(d)(ii) To add / restore the colour of food // To enhance its visual
appeal / appearance// more attractive 1
TOTAL 9
Question Mark scheme
Sub
Mark
Total
Mark
2(a)(i)
Magnesium
r:Mg
1
2
2(a)(ii) Has 3 shell occupied with electrons 1
2 (b)
1. Proton number of chlorine is higher than magnesium // the
number of proton of chlorine atom higher than magnesium atom
// total positive charged in nucleus higher than magnesium
2. The attractive force between the nucleus and the electrons in
chlorine atom stronger than magnesium atom // nuclei attraction
towards electrons stronger.
1
1 2
2(c) Light bulb // in welding process 1 1
2 (d) Argon 1 1
2(e)(i) 3 Cl2 (g) + 2 Fe (s) 2 FeCl3(s)
1 1
2(e)(ii) Mass iron (III) chloride = 0.05 x 161 // 8.05 g 1 1

4
2(e)(ii)
1 1
Total 9
Sub
Mark
Total
Mark
3(a)(i) 6 1
4
3(a)(ii) To estimate the age of fossils and artifacts 1
3(a)(iii) C-12 // C-13
1
3(a)(iv) 7 / 6 1
3(b)(i) A: covalent
r: covalent bond
B: ionic
r: ionic bond
1
1
6
3(b)(ii) 2.8.8.1 1
3(b)(iii) High melting point and boiling point // conduct electricity in
molten or aqueous solution // soluble in water // insoluble in
organic solvent.
[Any one]
1
3(c)(iv) 2K + Cl2  2KCl
1. Formula of reactants and products correct
2. Balance the chemical equation
1
1
TOTAL 10
13
C
6
12
C
6
Or
Hot iron wool
Wul besi panas
Heat
Panaskan
Chlorine gas
Gas klorin
√

5
Sub
Mark
Total
Mark
4(a)(i)
Pipette
r: wrong spelling
1
3
4(a)(ii)
Phenolphthalein // methyl orange
r: wrong spelling
1
4(a)(iii)
Phenolphthalein : pink to colourless //
methyl orange : yellow to orange
1
4(b)(i)
2KOH + H2 SO4 K2 SO4 + 2H2O
Formula of reactants and products correct
Balance the chemical equation
1
1
2
4(b)(ii)
1. Mol of KOH = (1.0)(25) / 1000
= 0.025 mol
2. Molarity of H2 SO4 = (0.0125)(1000) / 10
= 1.25 mol dm-3
//
Molarity of H2SO4 = 0.0125 /0.01 = 1.25 mol dm-3
Or
b
a
VM
VM
bb
aa
 ; Molarity of H2SO4 =
10
)25(1
2
1
x
= 1.25 mol dm-3
r: wrong unit or without unit
1
1 2
4(c)(i)
Hydrogen ion
r: H+
(symbol ion) 1
3
4(c)(ii)
1. no water
2. contain of molecule // no hydrogen ion, H+
1
1
TOTAL 10

6
Question Mark scheme Sub
Mark
Total
Mark
5(a) Chemical formula that shows the simplest whole number ratio of
atom of each element in the compound.
1 1
5(b)(i) Mass of Mg = 2.4 g
Mass of O = 1.6 g 1
6
5(b)(ii) Mole of Mg = 2.4 / 24 = 0.1
Mol of O = 1.6 / 16 = 0.1
Mg : O = 1 : 1
1
1
5(b)(iii) MgO 1
5(b)(iv) to allow oxygen enter the crucible 1
5(b)(v) Repeat the process heating, cooling and weighing until a
constant mass is obtained.
1
5(c)
Apparatus set-up correct and functional
Labeled : magnesium ribbon, heat
1
1 2
5(d)(i) Zinc oxide // aluminium oxide
r: formula
1
2
5(d)(ii) Silver is less reactive / not reactive metal 1
TOTAL 11
Magnesium
ribbon
Heat
crucible

7
Sub
Mark
Total
Mark
6(a) Hydrogenation 1
5
6(b) C4H8 + H2  C4H10 1
6(c)(i)
Mole of butene = 2.8 /56 = 0.05 mol 1
6(c)(ii) P1. 1 mol of butene burns in oxygen gas produce 4 mol of
carbon dioxide.
Therefore 0.05 mol of butene burns in oxygen gas produce 0.2
mol of carbon dioxide //
C4H8 : CO2
1 : 4
0.05 : 0.2
P2. volume of CO2 = 0.2 x 24 = 4.8 dm3
1
1
6(d) P1: 2 cm3
of but-2-ene and 2 cm3
of butane gas are filled in two
different test tubes.
P2 : 2 -3 drops of acidified potassium manganate (VII) solution
is added to both test tubes.
P3: But-2-ene decolourises purple acidified KMnO4
Purple acidified KMnO4 in butane remains unchange.
Or
P1: 2 cm3
of but-2-ene and 2 cm3
of butane gas are filled in two
different test tubes.
P2 : 2-3 drops of bromine water is added to both test tubes.
P3: But-2-ene decolourises brown bromine water.
Brown bromine water in butane remains unchange.
1
1
1
Or
1
1
1 3
6(e)(i) A: unvulcanised rubber
B: vulcanised rubber
1
1
3
6(e)(ii) Rubber type B/ vulcanised rubber is more elastic than rubber
type A/ unvulcanised rubber 1
TOTAL 11

8
SECTION B
Mark Σ
Mark
7 (a) (i) Ascending order : Cu, Y,X, W
(ii)
P1 : Positive terminal : Cu
P2 : Potential difference : 1.3V
P3: Copper is less electropositive // X is more electropositive
correct value and unit
1
1
1
1
4
7 ( b) (i)
Experiment I : Pb 2+
, Cl-
Experiment II: H +
. OH-
, Cl –
r: lead(II) ion, chloride ion
Hydrogen ion, hydroxide ion, chloride ion
1
1 2
7(b)(ii)
Experiment 1 Experiment II
Product at anode:
Chlorine gas
Products at cathode:
Oxygen gas
Reason:
P1: Cl-
is discharged
P2: the only
anion presence
and discharged at anode
Reason:
P1:OH-
is selected to be
discharged
P2:the position of OH-
is lower
than Cl-
in electrochemical series
.Half equation:
2Cl-
 Cl 2 + 2e
P1:Correct formula of
reactant and product :
P2: Balance equation
. Half equation:
4OH-
 2 H2O + O2 + 4e
P1: Correct formula of reactant
and product
P2: Balance equation
1 + 1
1 + 1
1 + 1
1 + 1
1 + 1
10

9
7(c)
P1: Positive terminal: R
P2: Negative terminal:Cu
P3: Suitable metal for R : Silver
P4: Suitable solution for R : Silver nitate solution
1
1
1
1 4
Total 20
Question Mark scheme Mark Σ Mark
8(a) P1. Smaller size has larger total surface area.
P2. Absorb heat faster.
P3. Bigger size has smaller total surface area.
P4. Absorb heat slower
1
1
1
1 4
(b)(i) Copper(II) sulphate 1 1
(b)(ii) 1. Experiment I
Rate of reaction = 40/2 = 20 cm3
min-1
2. Experiment II
Rate of reaction = 60/2 = 30 cm3
min-1
1
1
2
(b)(iii) P1. Rate of reaction in Experiment II is higher than
Experiment I.
P2. Substance X used in Experiment II is a catalyst.
P3. Catalyst provided an alternative path with requires a
lower
activation energy.
P4. More particles are able to achieve lower activation
energy.
P5. Frequency of effective collisions between zinc atoms and
hydrogen ions are higher.
1
1
1
1
1
5

10
(b)(iv) 1. Label of axes and unit
2. Correct curve and label
1
1
2
(v) 1. Correct formula of reactants and product
2. Balanced equation
Zn + 2H+
 Zn2+
+ H2
1
1 2
(vi) 1. Rate of reaction using sulphuric acid is higher.
2. Volume of hydrogen gas released is doubled.
3. Sulphuric acid is a diprotic acid.
4. Concentration of hydrogen ions in sulphuric acid is double
than that in hydrochloric acid.
1
1
1
1 4
Total 20
Volume of
gas / cm3
Time / min
Exp II
Exp I
2

11
Mark Σ
Mark
9(a) P1: Magnesium atom undergoes oxidation
P2: oxidation number increases from 0 to 2+
P3: Copper (II) ion undergoes reduction
P4: oxidation number decreases from +2 to 0
P5: The reaction involving oxidation and reduction
1
1
1
1
1
MAX
4
(b) Experiment I
L can reduce copper(II) oxide// L can react with copper(II) oxide
L is more reactive than copper.
Experiment II
M can reduce copper(II) oxide//M can react with copper(II)
oxide
M is more reactive than copper.
Experiment III
M cannot reduce L oxide // M cannot react with L oxide.
M is less reactive than L//L is more reactive than M.
The arrangement in order of increasing reactivity toward oxygen is Cu,
M and L.
1
1
1
1
1
1
Max
5
1
6
(c) Procedure :
P1. Pour 2 cm3
of potassium bromide solution into a test tube.
P2. Add 2 cm3
of chlorine water to the test tube and shake the mixture.
P3. Add 2 cm3
of 1,1,1 trichloroethane to the test tube and shake the
mixture.
P4. Record the observation
P5. Repeat steps 1-4 using another halogens and halide solution.
.
1
1
1
1
1

12
Result :
Chlorine water Bromine water Iodine water
Potassium
chloride
X X
Potassium
bromide
 X
Potassium
iodide
 
Ionic equation:
1. Cl2 + 2Br-
 2Cl-
+ Br2
2. Cl2 + 2I-
 2Cl-
+ I2
3. Br2 + 2I-
 2Br-
+ I2
1
1
1
1
1
10
20

13
Mark Σ
Mark
10(a)
 Precipitation / double decomposition reaction
 Barium nitrate solution/barium chloride solution
[Any sulphate solution]
Example: sodium sulphate, potasium sulphate, sulphuric
acid
Reject : Lead(II) sulphate, calcium sulphate
 Ba2+
+ SO4
2
 BaSO4
1
1
1
1
4
10(b)(i)
 Cation : Iron(II) ion / Fe2+
 Anion: Chloride ion / Cl
1
1
2
10(b)(ii)
Test for NO3

P1: Add 2 cm3
of dilute sulphuric acid into the test tube follow
by 2 cm3
of iron(II) sulphate solution.
P2: Add a few drops of concentrated sulphuric acid
P3: carefully and slowly along the side of slanting test tube
into the mixture.
P2: A brown ring is formed.
1
1
1
1 4
10(c)
Procedure:
P1. Add zinc nitrate solution to sodium carbonate solution
in a beaker.
P2. Stir the mixture.
P3. Filter the white precipitate/solid zinc carbonate formed.
P4. Add zinc carbonate to sulphuric acid in a beaker until
some zinc carbonate solid no longer dissolve.
P5. Filter the mixture.
P6. Transfer the filtrate to a evaporating dish.
P7. Heat the filtrate(zinc sulphate solution) until saturated//
Heat the filtrate to about one-third (1/3) of its initial
volume
P8. Allow the saturated solution to cool at room temperature.
P9. Filter the crystals formed.
P10. Dry the crystals by pressing it between two sheets of
filter papers.
1
1
1
1
1
1
1
1
1
1
10
Total 20

1
Marking Scheme Chemistry Paper 3
[KK0503 – Mengukur menggunakan nombor]
[KK0506 – Berkomunikasi]
Question Rubric Score
1(b) Able to construct the table with correct label and unit
Sample answer:
Type of
blocks
Diameter of dents(cm) Average diameter
of dents (cm)I II III
Copper 1.35 1.60 1.50 1.48
Bronze 1.20 1.00 1.20 1.13
3
Able to construct the table without correct label or unit 2
Able to construct the idea of table 1
No response or wrong response 0
[KK0501 – Memerhati]
1(c) (i) Able to state the observation correctly and accurately
Sample answer:
The average diameter of dents on bronze block is 1.13 cm, the
average diameter of dents on copper block is 1.48 cm.//
The size / diameter of dents on bronze block is smaller than the size
/ diameter of dents on copper block//
The size / diameter of dents on copper block is bigger than the size /
diameter of dents on bronze block
3
Able to state the incomplete observation
Sample answer:
Able to state the average diameter of one block only.
The size / diameter of dents on bronze block is smaller//
The size / diameter of dents on copper block is bigger.
2
Able to state the idea of observation
Sample answer :
The size / diameter of dents on bronze block is small/
The size / diameter of dents on copper block is big.
1
1(a) Able to measure the diameter of dents correctly and accurately
Sample answer:
Copper: 1.35, 1.60, 1.50
Bronze: 1.20, 1.00, 1.20
3
Able to measure the diameter of dents without 2 decimal point 2
Able to state 4 diameter of dents correctly 1

2
[KK 0504 – Membuat Inferens]
1(c)(ii) Able to state the inference correctly and accurately
Sample answer:
Bronze is harder than copper //
Copper is less harder than bronze
3
Able to state the incomplete inference correctly
Sample answer :
Bronze is harder //
Copper is less harder
2
Able to state the idea of inference
Sample answer :
Bronze is hard//
Copper is soft
1
[KK0508 – Mentafsir data]
1(c)(iii) Able to explain the arrangement of particles in the materials
correctly
Sample answer:
1. The atomic size of tin is bigger than copper// The atomic size of
tin and copper are different
2. The presence of tin atoms in bronze disrupts the orderly
arrangement of copper atoms
3. Reduces/ Prevent the layers of atoms from sliding over each
other/ easily.
3
Able to state any 2 points // 3 points without the name of atoms
correctly
2
Able to state point 1 point correctly 1
[KK0510 – Mengawal pemboleh ubah]
1(d) Able to state all the variables
Sample answer:
Manipulated variable : Type of materials / blocks//
Copper and bronze
Responding variable : Size / diameter of dents
Fixed variable : Size / diameter and mass of steel ball bearing //
height of the weight // mass of the weight
3
Able to state two variables correctly 2
Able to state one variable correctly 1

3
[KK0511 – Membuat hipotesis]
1(e)(i) Able to state the hypothesis correctly
Sample answer:
Bronze is harder than copper //
Copper is less harder than bronze
3
Able to state the hypothesis less correctly 2
Able to state idea of hypothesis 1
[KK0509 – Mendefinisikan secara operasi]
1(e)(ii) Able to state the operational definition correctly
Sample answer:
The smaller dent produced when a 1 kg weight is dropped on the
block. 3
Able to state the operational definition less correctly
The smaller dent produced when a weight is dropped on the block//
When a weight is dropped on the block results smaller dent, thus the
harder the block is.
2
Able to state idea of operational definition
The harder block has a smaller dent.
1
[KK0502 – Mengelas]
1(e)(ii) Able to classify all substances correctly
Sample answer:
Alloy Pure metal
Steel
Brass
Pewter
Iron
Chromium
Tin
3
Able to classify at least 4 substances less correctly
Sample answer:
Alloy Pure metal
Steel
Brass
Tin
Iron
Chromium
Pewter
2
Able to state idea of classification (at least 2 correct)
Sample answer :
Alloy Pure metal
Iron
Chromium
Pewter
Steel
Brass
Tin
1

4
[KK0505 – Meramal]
2(a) 1. Able to show an extrapolation on the graph .
Sample answer:
2. Range of answer[ 2600 - 2700 ]
3. Show the negative sign and correct unit, kJmol-1
3
Able to state any two correct answers 2
Able to state any one correct answer 1
[KK0507 – Menggunakan perhubungan ruang dan masa]
2(b) Able to state the relationship between the number of carbon atom
per molecule and the time taken for cooking correctly
Sample answer
The higher the number of carbon atom per molecule alcohol, the
shorter the time taken for cooking
3
Able to state the relationship between the number of carbon atom
per molecule and the time taken for cooking less correctly
Sample answer
The higher the number of carbon atom, the shorter the time taken
for cooking
2
Able to give relevant idea 1
Number of carbon atom per molecule of alcohols
Heat of combustion/ kJ mol-1
Haba pembakaran/ kJ mol-1
5
0
0
0 1 2 3 4
500
1000
1500
2000
2500
3000
3500

5
[KK0512 –Menyatakan masalah]
3(a) Able to give the problem statement correctly
Sample answer:
How does different type of metals in contact with iron affect
rusting?//
Does more electropositive metal in contact with iron inhibit the
rusting of iron?//
Does less electropositive metal in contact with iron speed up the
rusting of iron?
3
Able to give the problem statement less correctly
To investigate the affect of other metals on the rusting of iron//
How does a metal affect the rusting of iron?
2
Able to state an idea of hypothesis
More electropositive metal inhibit the rusting of iron//
Less electropositive metal speed up the rusting of iron
1
KK0512 – Menyatakan pemboleh ubah]
Question Rubric Marks
3(b) Able to state all the three variables correctly
Manipulated variable :
Name of metal R and metal S// type of metals
Responding variable :
Rusting of iron//iron rust//formation of blue spot
Constant variables:
Iron nail//Gelatine solution with potassium
hexacyanoferrate(III) and phenolpthtalein
3
Able to state any two variables correctly 2
Able to state any one variable correctly 1

6
[KK0512 – Menulis hipotesis]
3(c) Able to state the relationship between the manipulated variable
and the responding variable and state the direction.
Sample answer:
When a more electropositive metal is in contact with iron,
the metal inhibits rusting. // When a less electropositive
metal is in contact with iron, the metal speed up rusting
3
Able to state the relationship between the manipulated variable
and the responding variable less correctly
Sample answer:
A more electropositive metal will prevent iron from
rusting. // A less electropositive metal will cause iron to
rust.
2
Able to state an idea of hypothesis
Sample answer:
Metal R and metal S affect rusting (of iron)
1
[KK0512 – Menyenaraikan bahan dan radas]
Question Rubric Mark
3 (d) Able to give complete list of substances and apparatus
Answer:
Substances
 Two Iron nails,
 Magnesium/zinc/aluminium strip
 Tin/copper/lead/silver strip
 Potassium hexacyanoferrate(III) solution +
phenolphthalein
 [Any suitable electrolyte]/[water]
Apparatus
 Test tube/boiling tube
 Test tube rack
 Sand paper
3
Able to list basic materials and apparatus
Sample answer:
Materials
 Magnesium/zinc/aluminium strip
 Tin/copper/lead/silver strip
 Iron nail
 Any suitable electrolyte
2

7
Apparatus:
 Any suitable container
Able to give an idea of the materials and apparatus
Sample answer:
Materials
 Iron
 Any electrolyte
Apparatus
 Any suitable container
1
[KK0512 – Memilih teknik]
3 (e) Able to state all the steps correctly
Sample answer:
1. Clean the iron nails and metals strip with sand paper.
2. Coil iron nails with magnesium ribbon and copper strip.
3. Put the coiled iron nail into different test tubes.
4. Pour the hot jelly solution containing potassium
hexacyanoferrate(III)solution and phenolphthalein into
the test tube.
5. Leave the test tube in a test tube rack for a day.
6. Record the observation.
3
Able to state the steps 2,4,and 6 correctly 2
Able to state steps 2 and 4 correctly
[2 and 4 ]//the idea combining iron and any metals and any
substances
1

8
[KK0512 – Mempamerkan perancangan]
3 (f) Able to tabulate the data with the following aspects
1. Heading for the manipulated variables
[pair of metals//Test Tube]
2. Heading for responding variables
Sample answer:
Pair of metals Observation
Mg/Fe
Cu/Fe
2
Able to give an idea on tabulation of data at least one
information stated in the table
1. At least one heading
Sample answer
Set
1
PERATURAN PEMARKAHAN TAMAT

Chemistry

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