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JPN Terengganu KIMIA SPM K1 [2014] BK9 [Soalan].doc
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CHEMISTRY
Kertas 1
Ogos
1 ¼ jam
BAHAN KECEMERLANGAN (BK 9)
SIJIL PELAJARAN MALAYSIA 2015
CHEMISTRY
Kertas 1
Satu jam lima belas minit
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
1. Kertas ini mengandungi 50 soalan.
2. Jawab semua soalan.
3. Tiap-tiap soalan diikuti oleh empat jawapan, iaitu A, B, C dan D. Bagi setiap soalan, pilih
satu jawapan sahaja. Hitamkan jawapan anda pada kertas jawapan objektif yang
disediakan.
4. Jika anda hendak menukar jawapan, padamkan tanda yang telah dibuat. Kemudian
hitamkan jawapan yang baru.
5. Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.
6. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.
Kertas soalan ini mengandungi 31 halaman bercetak
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1 The following information describes X.
Maklumat berikut menghuraikan X.
What is represented by X?
Apakah yang diwakili X?
A Isotopes
Isotop
B Isomers
Isomer
C Transition elements
Unsur peralihan
D Mol
Mol
2 The average mass of copper atom in 64 times greater than 1
/12 of the mass of a
carbon-12 atom.
State the relative atomic mass of copper.
Purata jisim satu atom kuprum ialah 64 kali lebih besar daripada 1
/12
jisim satu atom karbon-12.
Nyatakan jisim atom relatif bagi kuprum.
A 5
B 12
C 64
D 128
Atoms of the same element but different number of neutrons.
Atom unsur yang sama tetapi mempunyai bilangan neutron yang berbeza
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3 Which of the following elements A, B, C or D in the Periodic Table exists as monoatomic
gas ?
Antara unsur A,B,C atau D dalam Jadual Berkala , yang manakah wujud sebagai gas
monoatom?
A B C
D
4 Which of the following statement best explains the low melting point of covalent
compounds?
Antara pernyataan berikut, yang manakah paling tepat menerangkan mengapa takat lebur
sebatian kovalen adalah rendah?
A Covalent bond is weak
Ibadan covalent adalah lemah
B The intermolecular forces are weak
Daya tarikan antara molekul adalah lemah
C Covalent compounds are volatile
Sebatian kovalen meruap
D Covalent compounds exist as gas at room temperature
Sebatian kovalen wujud sebagai gas pada suhu bilik
5 What is the meaning of electrolytes?
Apakah maksud elektrolit?
A Metals that can conduct electricity.
Logam yang mengkonduksikan elektrik dalam keadaan pepejal.
B Elements that conduct electricity in molten state.
Unsur yang mengkonduksikan elektrik dalam keadaan leburan.
C Compounds that can conduct electricity in any state .
Sebatian yang mengkonduksikan elektrik dalam sebarang keadaan.
D Compounds that can conduct electricity in molten state or aqueous solution .
Sebatian yang mengkonduksikan elektrik dalam keadaan leburan atau larutan
akueus.
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6 Acid rain causes the land to become acidic. Which of the following substances can be
used by farmers to neutralise the acidity in the soil?
Hujan asid menyebabkan tanah menjadi berasid. Antara berikut, bahan yang
manakah boleh digunakan oleh para petani untuk meneutralkan keasidan dalam
tanah?
A Sulphur
Sulfur
B Calcium oxide
Kalsium oksida
C Sodium chloride
Natrium klorida
D Ammonium nitrate
Ammonium nitrat
7 Which of the following compound will produce brown gas when heated
Antara sebatian berikut, yang manakah akan menghasilkan gas berwarna perang bila
dipanaskan
A Zinc chloride
Zink klorida
B Sodium chloride
Natrium klorida
C Magnesium nitrate
Magnesium nitrat
D Copper(II) carbonate
Kuprum(II) karbonat
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8 Diagram 1 shows dental filling material used to fill cavities caused by tooth decay.
Dental amalgam is an alloy of mercury(50%), silver (~22-32% ), tin (~14%), copper (~8%).
Rajah 1 menunjukkan tampalan amalgam yang digunakan untuk memenuhi kaviti
disebabkan oleh gigi berlubang.
Tampalan gigi amalgam ialah aloi daripada raksa(50%), argentum(~22-32%),
timah(~14%),dan kuprum(~8%)
In your opinion, why is amalgam used in dental filling?
Pada pendapat anda, mengapakah amalgam digunakan sebagai tampalan gigi?
A Strong
Kuat
B Expensive
Mahal
C Not long lasting
Tidak tahan lama
D Likely to break
Mudah patah
Diagram 1
Rajah 1
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9 Which of the following define the rate of reaction correctly ?
Yang manakah di antara berikut mendefinisikan kadar tindak balas dengan betul ?
A Mass of products
Mass of reactants
Jisim hasil tindakbalas
Jisim bahan tindakbalas
B Time taken
Mass of products
Masa yang diambil
Jisim hasil tindakbalas
C Volume of gas released
Time taken
Isipadu gas yang dibebaskan
Masa yang diambil
D Mass of reactants used
No. of mol
Jisim bahan tindakbalas digunakan
Bilangan mol
10 Diagram 2 shows a structural formula of compound U.
Rajah 2 menunjukan formula struktur bagi sebatian U.
H H O
H C C C OH
H H
Diagram 2
Rajah 2
Name the homologous series for compound U.
Namakan siri homolog bagi sebatian U.
A Alkene
Alkena
B Alcohol
Alkohol
C Carboxilic asid
Asid karboksilik
D Ester
Ester
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11 The rusting of iron will only occur in the presence of..
Pengaratan besi hanya akan berlaku di dalam kehadiran..
I Water
Air
II Hydrogen ion
Ion hidrogen
III Oxygen
Oksigen
IV Acid
Asid
A I and II
I dan II
B I and III
I dan III
C II and IV
II dan IV
D III and IV
III dan IV
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12 The following chemical equation shows the reaction of the formation of magnesium
carbonate.
Persamaan kimia berikut menunjukkan tindak balas pembentukan mendakan magnesium
karbonat.
Which of the following is true about the reaction?
Antara berikut, yang manakah benar tentang tindak balas itu?
Heat change
Perubahan haba
Type of reaction
Jenis tindak balas
A Heat is released
Haba dibebaskan
Endothermic
Endotermik
B Heat is absorbed
Haba diserap
Exothermic
Eksotermik
C Heat is released
Haba dibebaskan
Exothermic
Eksotermik
D Heat is absorbed
Haba diserap
Endothermic
Endotermik
13 Which of the following food additives is an antioxidant?
Antara bahan tambah makanan berikut yang manakah adalah pengantioksida?
A Benzoic acid
Asid benzoik
B Ascorbic acid
Asid askorbik
C Sodium nitrate
Natrium nitrat
D Ethyl ethanoate
Etil etanoat
Mg2+ + CO3
2- → MgCO3
∆H = + 25.2 kJ mol-1
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14 Diagram 3 shows the cooling curve for a sample of a pure substance X
Rajah 3 menunjukkan lengkuk penyejukan bagi satu contoh bahan X yang tulen.
Diagram 3
Rajah 3
Which of the following statements is true about the arrangement of particles at time t?
Antara berikut, yang manakah pernyataan yang benar tentang susunan zarah-zarah pada
masa t?
A All the molecules move freely
Semua zarah bergerak bebas
B All the molecules only vibrate and rotate at their fixed position
Semua zarah hanya bergetar dan berputar pada kedudukan yang tetap
C Some of the molecules move from one point to another and the others move
randomly
Sebahagian zarah bergerak dari satu tempat ke tempat yang lain dan yang lainnya
bergerak bebas
D Some of the molecules vibrate and rotate at their fixed positions and the others
move from one point to another
Sebahagian zarah bergetar dan berputar pada kedudukan yang tetap dan yang
lainnya bergerak dari satu tempat ke tempat yang lain
t
Temperature/o
C
Suhu /o
C
Time/s
Masa /s
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15 A balloon contains 6.02 x 1022
of a gas particles.
What is the number of mole of the gas in the ballon?
Sebiji belon mengandungi 6.02 x 1022
zarah-zarah gas.
Berapakah bilangan mol gas itu dalam belon tersebut?
A 0.01 mol
B 0.02 mol
C 0.1 mol
D 0.2 mol
17 Why metals are not considered as electrolytes eventhough they conduct electricity?
Mengapakah logam tidak dianggap sebagai elektrolit walaupun mengkonduksikan
elektrik?
A They have high melting point.
Mempunyai takat lebur yang tinggi.
B They conduct electricity in solid state
Mengkonduksikan elekrik dalam keadaan pepejal
C They are not decomposed by the passage of electric current
Tidak terurai oleh laluan arus elektrik
D They do not dissolve in water to form aqueous solution
Tidak larut dalam air untuk membentuk larutan akueus
16 Z forms an ionic compound with chlorine with an empirical formula of ZCl2. Which of the
following could be the electron arrangement of atom Z ?
Z membentuk satu sebatian ionik dengan klorin dan formula empiriknya ialah ZCl2.
Antara berikut, yang manakah susunan elektron bagi atom Z?
A 2.7
B 2.8.1
C 2.8.6
D 2.8.8.2
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18 Element X is located in Group 14 of the Periodic Table. Element Y has a proton number of
17. Which of the following shows the formula and type of compound formed when element
X combines with element Y?
Unsur X terletak di Kumpulan 14 dalam Jadual Berkala. Unsur Y mempunyai nombor
proton 17. Antara berikut yang manakah menunjukkan formula dan jenis sebatian yang
terbentuk apabila unsur X berpadu dengan unsur Y?
Formula
Type of Compound
Jenis Sebatian
A
XY2
Ionic
Ionik
B
X4Y
Covalent
Kovalen
C
XY
Ionic
Ionik
D
XY4
Covalent
Kovalen
19 Table 1 shows the observations in an electrical conductivity test for acids.
Jadual 1 menunjukkan pemerhatian dalam ujian kekonduksian elektrik bagi dua asid.
Acid
Asid
Observation
Pemerhatian
0.1 mol dm-3
HX acid
0.1 mol dm-3
asid HX
Bulb lights up brightly.
Mentol lampu menyala dengan terang
0.2 mol dm-3
HY acid
0.1 mol dm-3
asid HY
Bulb lights up dimly.
Mentol lampu menyala dengan malap
Table 1
Jadual 1
Which of the following is true about the two acids?
Antara berikut, yang manakah benar tentang dua asid itu?
A HX acid is strong acid, while HY acid is weak acid
HX adalah asid kuat manakala HY adalah asid lemah
B HX acid has a higher pH value than HY acid
Asid HX mempunyai nilai pH yang lebih tinggi daripada asid HY
C Both acids show the same chemical reactivity
Kedua-dua asid menunjukkan kereaktifan kimia yang sama
D Both acids undergo complete dissociation in water
Kedua-dua asid mengalami penceraian lengkap dalam air
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20 Which of the following reagents will produce zinc sulphate salt?
Antara campuran berikut, yang manakah dapat menyediakan garam zink sulfat?
A Zinc nitrate is added to sulphuric acid
Zink nitrat dicampur kepada asid sulfurik
B Zinc oxide is added to sulphuric acid
Zink oksida dicampur kepada asid sulfurik
C Zinc hydroxide is added to sulphuric acid
Zink hidroksida dicampur kepada asid sulfurik
D Zinc chloride is added to sulphuric acid
Zink klorida dicampur kepada asid sulfurik
21 A hydrocarbon contains six carbon atoms and it has the characteristics below.
Satu hidrokarbon terdiri daripada enam atom karbon dan mempunyai ciri-ciri seperti
berikut.
What is the molecular formula of the hydrocarbon?
Apakah formula molekul bagi hidrokarbon itu?
A C6H14
B C6H12
C C6H10
D C6H14O
Decolourises the purple colour of acidified potassium
manganate (VII)
Melunturkan warna ungu kalium manganat(VII) berasid
Produces more soot
Menghasilkan jelaga yang banyak
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22 Diagram 4 shows the run off of heavy load of pollutant X that make their way into rivers,
fertilizing blooms of algae that deplete oxygen and leave vast "dead zones" in the river.
Salt X is produced from the products of Haber Process and Contact Process.
Rajah 4 menunjukkan sungai yang tercemar oleh lebihan garam X yang mengalir dari
kebun sayur di tebing sungai. Pencemaran ini telah menyebab pertumbuhan pesat algae
dan rumpair menyebabkan kekurangan oksigen ikan dan hidupan air lain mati.
Garam X disediakan daripada tindak balas antara hasil proses Haber dan proses
Sentuh.
Diagram 4
Rajah 4
What is salt X
Apakah garam X?
A Ammonia
Ammonia
B Sulphuric acid
Asid sulfurik
C Ammonium sulphate
Ammonium sulfat
D Ammonium phosphate
Ammonium fosfat
Kebun sayur
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23 Two experiments were conducted by a group of Form 5 students to investigate the rate of
reaction between calcium carbonate and nitric acid as shown in Table 2.
Dua eksperimen telah dijalankan oleh sekumpulan pelajar Tingkatan 5 untuk menyiasat
kadar tindakbalas di antara kalsium karbonat dengan asid nitrik seperti yang
ditunjukkan dalam Jadual 2 .
Experiment
Eksperimen
Calcium
carbonate
Kalsium karbonat
Nitric acid, HNO3
Asid nitrik
Mass
(g)
Jisim
(g)
Physical
form
Bentuk
fizikal
Volume
(cm3
)
Isipadu
(cm3
)
Concentration
(mol dm-3
)
Kepekatan
(mol dm-3
)
R 6
Granule
Butiran
100 0.1
S 6
Powder
Serbuk
50 0.2
Table 2
Jadual 2
Which of the following graphs represent the two experiments?
Antara graf berikut, yang manakah mewakili kedua-dua eksperimen itu?
A
Volume of CO2/cm3
Isipadu CO2/cm3
Time/s
Masa/s
B Volume of CO2/cm3
Isipadu CO2/cm3
Time/s
Masa/s
R
S
R
S
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C
Volume of CO2/cm3
Isipadu CO2/cm3
Time/s
Masa/s
D
Volume of CO2/cm3
Isipadu CO2/cm3
Time/s
Masa/s
24 Metal X is located between tin and zinc in the reactivity series metals.
Which of the following pairs of metals can reduce X oxide?
Logam X berada di antara stanum dan zink dalam siri kereaktifan logam.
Antara berikut, pasangan logam yang manakah boleh menurunkan X oksida?
I Aluminium
Aluminium
II Copper
Kuprum
III Magnesium
Magnesium
IV Lead
Plumbum
A I and II
I dan II
B I and III
I dan III
C II and IV
II dan IV
D III and IV
III dan IV
S
R
S
R
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25 The following thermochemical equation shows a reaction.
Based on the equation, which statement is correct?
Persamaan termokimia berikut menunjukkan satu tindak balas.
Berdasarkan persamaan itu, pernyataan manakah yang betul?
CuO + H2 → Cu + H2O; ∆H = + 130.5 kJ
A The reaction is exothermic
Tindak balas adalah eksotermik
B The activation energy is 130.5 kJ mol-1
Tenaga pengaktifan ialah 130.5 kJ mol-1
C The temperature of the mixture decrease
Suhu campuran berkurang
D The total energy of the reactants is higher than the products
Jumlah tenaga bahan tindak balas adalah lebih tinggi daripada hasil tindak balas.
26
Which of the following is the correct sequence in soap preparation?
Yang manakah di antara berikut adalah urutan yang betul bagi penyediaan sabun?
A X, Y, Z, W
B X, Y, W, Z
C X, W, Z, Y
D X, W, Y, Z
X: Add 50 cm3
of sodium hydroxide solution to 10 cm3
of oil.
Tambah 50 cm3
larutan natrium hidroksida kepada 10 cm3
minyak.
Y: Filter out the mixture and wash with a little distilled water.
Turas campuran dan basuh dengan sedikit air suling.
Z: Add 50 cm3
of distilled water to the mixture.
Tambah 50 cm3
air suling kepada campuran.
W: Heat the mixture until it boils and stir with a glass rod.
Panaskan campuran sehingga mendidih dan kacau dengan rod kaca.
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27 Element R has a nucleon number of 27 and its ion is R3+
with an electron arrangement of 2.8.
The number of neutrons in an atom of element R is..
Unsur R mempunyai nombor nukleon 27 dan susunan elektron bagi R3+
adalah 2.8.
Nombor neutron untuk unsur R ialah...
A 11
B 12
C 13
D 14
28 Diagram 5 shows the arrangement of electrons for ion produced from atom Q.
Rajah 5 menunjukkan susunan elektron bagi ion yang terbentuk daripada atom Q.
Diagram 5
Rajah 5
Which of the following statement is true about Q ?
Antara berikut, yang manakah benar mengenai Q ?
A Atom Q is located in Group 1 of the Periodic Table
Atom Q terletak dalam Kumpulan 1 Jadual Berkala.
B Atom Q has 7 electrons in its valence shell
Atom Q mempunyai 7 elektron pada petala valensnya
C Atom Q is an inert gas
Atom Q adalah gas lengai
D Atom Q has achieved the octet electron arrangement
Atom Q telah mencapai susunan oktet
X
X
X
X
X
X
X
X
X
X
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29 Diagram 6 shows the electron arrangement of a carbon dioxide molecule.
Rajah 6 menunjukkan susunan elektron bagi molekul karbon dioksida.
Which of the following is true?
Antara berikut yang manakah benar?
A One carbon atom requires two electrons to achieve the octet electron
arrangement.
Satu atom karbon memerlukan dua elektron untuk mencapai susunan elektron
oktet.
B Each oxygen atom contributes one electron for sharing.
Setiap atom oksigen menyumbang satu elektron untuk dikongsi.
C Four double covalent bonds are formed in a carbon dioxide molecule.
Empat ikatan kovalen gandadua terbentuk dalam molekul karbon dioksida.
D One carbon atom contributes four electrons to be shared by two oxygen atoms
Satu atom karbon menyumbang empat elektron untuk dikongsi dengan dua atom
oksigen.
30 The molecular formula of ethyl ethanoate is CH3COOC2H5.
What is the empirical formula of ethyl ethanoate?
Formula molekul etil etanoat ialah CH3COOC2H5.
Apakah formula empirik etil etanoat?
A CHO
B CH2O
C C2H4O
D C4H8O2
Diagram 6
Rajah 6
O C O
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31 Table 3 shows information about three voltaic cells. Metal J, K, L and M are used as
electrodes in the cells.
Jadual 3 menunjukkan maklumat tentang tiga sel voltan. Logam-logam J, K, L dan M
digunakan sebagai elektrod dalam sel itu.
Voltaic cell
Sel voltan
Negative terminal
Terminal negatif
Positive terminal
Terminal positif
Voltage (V)
Voltan (V)
I J K 2.5
II J L 1.7
III M L 0.8
Table 3
Jadual 3
What is the order of the metals based on the increasing of electropositivity ?
Apakah susunan logam berdasarkan kelektropositifan menaik ?
A J, K, L, M
B K, M, L, J
C K, L, M, J
D J, M, L, K
32 Which of the following statements is true about both hydrochloric acid and sulphuric acid
with the same concentration?
Antara pernyataan berikut, yang manakah benar tentang kedua-dua asid hidroklorik dan
asid sulfurik dengan kepekatan yang sama?
A Have the same basicity
Mempunyai kebesan yang sama
B Have the same pH value
Mempunyai nilai pH yang sama
C Have the same chemical properties
Mempunyai sifat kimia yang sama
D Have the same concentration of hydrogen ions
Mempunyai kepekatan ion hydrogen yang sama
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33 Diagram 7 shows the cation test in solution X
Rajah 7 menunjukkan ujian kation dalam larutan X
+
Diagram 7
Rajah 7
Which of the following ion is present in solution X?
Antara yang berikut, ion manakah yang mungkin terdapat dalam larutan X?
A Ca2+
B Mg2+
C NH4
+
D Zn2+
34 A student had done a reaction between zinc granules with sulphuric acid. What he should
do to make the reaction becomes shorter?
Seorang pelajar telah melakukan tindak balas antara butiran zink dengan asid sulfurik.
Apakah yang perlu dia lakukan untuk memendekkan masa tindakbalas tersebut ?
A Adding the volume of sulphuric acid
Menambah isipadu asid sulfurik
B Heating the mixture of the reaction
Memanaskan campuran tindak balas
C Adding distilled water
Menambahkan air suling
D Using bigger size of conical flask
Menggunakan saiz kelalang kon yang lebih besar
Solution X
Larutan X
Sodium hydroxide solution
Larutan Natrium hidroksida
White precipitate soluble in
excess sodium hydroxide
Mendakan putih larut dalam
larutan natrium hidroksida
berlebihan
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35 Diagram 8 shows the smokestack emission by a factory. The main component in the
smoke caused the air pollution in the area. This gas is the byproduct of combustion of
fossil fuel.
Rajah 8 menunjukkan asap yang dikeluarkan daripada sebuah kilang. Bahan utama
dalam asap itu menyebabkan pencemaran alam sekitar di kawasan tersebut. Bahan ini
merupakan hasil sampingan kegiatan industri daripada pembakaran bahan api fosil.
Diagram 8
Rajah 8
By applying your knowledge in chemistry, suggest a suitable chemical to treat the
pollutant.
Dengan menggunakan pengetahuan kimia anda, cadangkan satu bahan kimia yang
sesuai yang boleh digunakan untuk merawat bahan itu.
A Sulphuric acid
Asid sulfurik
B Sodium hydroxide
Natrium hidroksida
C Detergents
Detergen
D Coal
Arangbatu
CO2
SO2
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36 Diagram 9 represents the structural formula of a carbon compound
Rajah 9 mewakili formula struktur bagi satu sebatian karbon.
H O H H H H
H C C O C C C C H
H H H H H
Diagram 9
Rajah 9
The compound is produced by the reaction between
Sebatian ini dihasilkan melalui tindakbalas antara
A Ethanol and propanoic acid
Etanol dan asid propanoik
B Butanol and ethanoic acid
Butanol dan asid etanoik
C Ethanol and butanoic acid
Etanol dan asid butanoik
D Propanol and propanoic acid
Propanol dan asid propanoik
37 When magnesium is immersed in hydrochloric acid, a colourless gas is liberated. What
happen to magnesium and hydrogen in the acid?
Apabila magnesium direndam di dalam asid hidroklorik, gas tak bewarna dibebaskan.
Apakah yang akan terjadi pada magnesium dan hidrogen di dalam asid?
Magnesium
Magnesium
Hydrogen
Hidrogen
A
Is oxidised
Dioksidakan
Is reduced
Diturunkan
B
Is reduced
Diturunkan
Is oxidised
Dioksidakan
C
Gains an electron
Menerima electron
Loses an electron
Kehilangan elektron
D
Loses an electron
Kehilangan elektron
Gains an electron
Menerima elektron
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CONFIDENTIAL
38 Which energy profile diagram shows the lowest activation energy?
Rajah profil tenaga manakah yang menunjukkan tenaga pengaktifan paling rendah?
A
B
C
D
0
0
0
0
100
0
00 0
200
00
0
300
00 0
Reaction path
Lintasan tindak balas
Energy(kJ)
Tenaga
0
0
0
0
100
0
00 0
200
00
0
300
00 0
Reaction path
Lintasan tindak balas
Energy(kJ)
Tenaga
Energy(kJ)
Tenaga
0
0
0
0
100
0
00 0
200
00
0
300
00 0
Reaction path
Lintasan tindak balas
Energy(kJ)
Tenaga
0
0
0
0
100
0
00 0
200
00
0
300
00 0
Reaction path
Lintasan tindak balas
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CONFIDENTIAL
40 The electron arrangement of atom P is 2.8.5 and atom Q has 2 valence electrons.
What is the type of bond and formula of compound formed between P and Q?
Susunan elektron bagi atom P ialah 2.8.5 dan atom Q mempunyai 2 elektron valens.
Apakah jenis ikatan dan formula sebatian yang terbentuk antara P dan Q?
Type of bond
Jenis ikatan
Formula of compound
Formula sebatian
A Ionic
Ion
PQ2
B Ionic
Ion
Q3P2
C Covalent
Kovalen
P2Q3
D Covalent
Kovalen
QP2
39 The word equation below shows how compound X, a food additive is prepared.
Persamaan perkataan di bawah menunjukkan bagaimana sebatian X, sejenis bahan
tambah makanan disediakan.
Carboxylic acid + alcohol → compound X + water
Asid karbosilik + alkohol → sebatian X + air
What is the use of compound X?
Apakah kegunaan sebatian X?
A Flavouring agent
Perisa
B Thickening agent
Agen pemekat
C Colouring
Pewarna
D Antioxidant
Pengantioksida
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CONFIDENTIAL
41 Copper (II) sulphate solution is electrolysed using copper elctrodes. What can be
observed at the anode and the cathode after 30 minutes?
Larutan kuprum (II) sulfat dielektrolisiskan menggunakan elektrod kuprum. Apakah yang
diperhatikan pada anod dan katod selepas 30 minit?
Anode
Anod
Cathode
Katod
A Copper plate becomes thinner
Plat kuprum menjadi nipis
Copper plate becomes thicker
Plat kuprum menjadi tebal
B Copper plate becomes thinner
Plat kuprum menjadi nipis
Gas bubbles are released
Gelembung gas terbebas
C Copper plate becomes thicker
Plat kuprum menjadi tebal
Copper plate becomes thinner
Plat kuprum menjadi nipis
D Gas bubbles are released
Gelembung gas terbebas
Copper plate becomes thicker
Plat kuprum menjadi tebal
42 The molarity of calcium hydroxide solution is 0.2 mol dm-3
.
What is the concentration of the alkali in g dm-3
?
[ Relative atomic mass : H = 1, O = 16, Ca = 40 ]
Kemolaran larutan kalsium hidroksida ialah 0.2 mol dm-3
.
Berapakah kepekatan alkali itu dalam g dm-3
?
[ Jisim atom relatif : H = 1, O = 16, Ca = 40 ]
A 11.4
B 11.6
C 14.8
D 19.4
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CONFIDENTIAL
43 A student would like to prepare calcium sulphate salt also known as ‘Plaster of Paris’.
‘Plaster of Paris’ is use to support broken bones. Table 4 shows the chemical reagents in
the laboratory and the experimental procedure to prepare the salt.
Seorang pelajar ingin menyediakan garam kalsium sulfat yang juga dikenali sebagai
“Plaster of Paris”. “Plaster of Paris” digunakan untuk menyokong tulang yang patah.
Jadual 4 menunjukkan bahan-bahan kimia yang terdapat di dalam makmal dan langkah-
langkah kaedah penyediaan garam.
Chemical reagent
Bahan kimia
Experimental procedure
Langkah eksperimen
P
Calcium oxide
Kalsium oksida
L1
Mix the chemical
Campurkan bahan kimia
Q
Calcium carbonate
Kalsium karbonat
L2
Heat the mixture
Panaskan campuran
R
Calcium nitrate
Kalsium nitrat
L3
Filter the mixture
Turaskan campuran
S
Sulphuric acid
Asid sulfurik
L4
Cool the filtrate
Sejukkan hasil turasan
T
Sodium nitrate
Natrium nitrat
L5
Rinse the residue with distilled
Bilas baki turasan dengan air suling
L6
Dry the salt
Keringkan garam
Table 4
Jadual 4
Which pair of chemical reagent and experimental procedure is the correct to produce
calcium sulphate salt?
Pasangan bahan kimia dan kaedah manakah betul untuk menghasilkan garam kalsium
sulfat?
Chemical reagent
Bahan kimia
Experimental procedure
Langkah experimen
A Q + S L1, L3, L5, L6
B R + T L1, L3, L5, L6
C P + T L1, L2, L3, L4, L6
D Q + T L1, L2, L3, L4, L6
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44 Table 5 shows the volume of carbon dioxide gas are collected at regular time intervals for
the reaction between calcium carbonate with hydrochloric acid.
Jadual 5 menunjukkan isipadu gas karbon dioksida yang dikumpul pada sela masa
tertentu bagi tindak balas antara kalsium karbonat dengan asid hidroklorik.
Time/s
Masa/s
0 30 60 90 120 150 180
Volume of carbon dioxide
gas/cm3
Isipadu gas karbon dioksida
/cm3
0.00 27.50 46.50 60.00 65.50 68.00 68.00
Table 5
Jadual 5
What is the average rate of reaction for the first 60 seconds?
Apakah kadar tindak balas purata bagi 60 saat pertama?
A 0.378 cm3
s-1
B 0.453 cm3
s-1
C 0.775 cm3
s-1
D 1.500 cm3
s-1
45 Which of the following reactions is an oxidation reaction ?
Antara tindakbalas berikut yang manakah adalah tindakbalas pengoksidaan?
A C3H6 + H2O C3H7OH
B C3H7OH + 2[O] C2H5COOH
C C3H7OH alumina C3H6 + H2O
D 2C3H6 + 9O2 3CO2 + 3H2O
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CONFIDENTIAL
46 Diagram 10 shows the structural formula of carbon compound X.
Rajah 10 menunjukkan struktur formula bagi sebatian karbon X.
Diagram 10
Rajah 10
Which of the following statement are true ?
Antara pernyataan berikut adalah benar ?
A Name of the compound X is butena
Nama sebatian X ialah butena.
B Empirical formula of compound X is C4H8
Formula empirik sebatian X ialah C4H8
C Compound X is unsaturated hydrocarbon
Sebatian X adalah hidrokarbon tak tepu.
D Complete combustion of compound X produce carbon dioxide gas and water
Pembakaran lengkap sebatian X menghasilkan gas karbon dioksida dan air.
47 Iron is extracted from haematite, Fe3O3 by reduction with coke but not electrolysis
because..
Besi diekstrakkan daripada haematit, Fe3O3 melalui penurunan dengan arang kok tetapi
bukan dengan elektrolisis kerana..
A The melting point of haematite is too high
Takat lebur haematit terlalu tinggi.
B Reduction with coke is economical than electrolysis.
Penurunan dengan arang kok lebih ekonomi berbanding elektrolisis
C Electrolysis takes place for very reactive metals.
Elektrolisis berlaku bagi logam yang reaktif
D Iron reacts very well with coke.
Besi bertindak balas dengan baik sekali dengan arang kok.
H H H H
H C C C C H
H H H H
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48 Diagram 11 shows the set-up apparatus for the electrolysis of diluted sodium chloride
solution.
Rajah 11 menunjukkan susunan radas elektrolisis larutan natrium klorida cair.
Diagram 11
Rajah 11
Which of the following statements is not true to describe the change that takes place?
Antara penyataan berikut, yang manakah tidak benar untuk menerangkan perubahan
yang berlaku?
A Oxidation occurs at the anode.
Pengoksidaan berlaku pada anod.
B Bubbles of gas are observed at both electrodes
Gelembung gas diperhatikan pada kedua-dua elektrod
C Chlorine ions are oxidized at the anode
Ion klorida dioksidakan pada anod
D Hydrogen ions are reduced at the cathode
Ion hidrogen diturunkan pada katod
Carbon electrode
Elektrod karbon
Diluted aqueous sodium chloride
Natrium klorida akueus
Carbon electrode
Elektrod karbon
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49 Diagram 12 shows the mercury level of a thermometer in a reaction.
Rajah 12 menunjukkan aras merkuri bagi suatu thermometer dalam satu tindak balas.
Which of the following is true about the reaction.
Antara yang berikut, yang manakah benar tentang tindak balas ini?
A Endothermic reaction
Tindak balas endotermik
B Exothermic reaction
Tindak balas eksotermik
C Bond breaking in the reactants absorbs energy
Pemecahan ikatan dalam bahan tindak balas menyerap haba
D The amount of energy in the product is higher than of reactants
Kandungan tenaga hasil tindak balas adalah lebih tinggi daripada kandungan
tenaga bahan tindak balas.
Before reaction
Sebelum tindak balas
After reaction
Selepas tindak balas
Diagram 12
Rajah 12
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CONFIDENTIAL
50 In an experiment, 2.4 g of magnesium powder is added to 100 cm3
of 2.0 mol cm-3
copper(II) sulphate solution.
The temperature of the mixture increases by 1.0 o
C.
What is the heat of the reaction in the experiment?
[Specific heat capacity of solution is 4.2 J g-1
C-1
; Relative atomic mass of Mg=24 ]
Dalam satu eksperimen, 2.4 g serbuk magnesium ditambahkan kepada 100 cm3
larutan
kuprum(II) sulfat 2.0 mol dm-3
.
Suhu campran meningkat sebanyak 1.0 o
C.
Berapakah haba tindak balas dalam eksperimen itu?
[Muatan haba tentu larutan ialah 4.2 J g-1
C-1
; Jisim atom relatif Mg = 24 ]
A - 0.42 kJ mol-1
B - 0.48 kJ mol-1
C - 4.20 kJ mol-1
D - 4.80 kJ mol-1