Science form 4 exercise for chapter 1

1. SMK GAJAH BERANG, MELAKA
CHAPTER I: SAFETY MEASURES IN THE LABORATORY
Name: _________________________ Class:___________________ Date:____________________
BahagianA/ SectionA:
Jawabsemua soalan/Answer all questions
1. Antara yang berikut, yangmanakahadalahalat perlindungandiri pada murid?
Which of the following is the personal protective equipment on a student?
A. Kabinet aliranlaminar / Laminar flow cabinet
B. Gogal/Goggle
C. Kebuk wasap/ Fume chamber
D. Pembilas mata/ Eye wash station
2. Apakahfungsi kebukwasap?
What is the function of fume chamber?
A. Untuk mengelakkankontaminasi semasa aktiviti berkaitan mikrobiologi dijalankan
To prevent contamination during microbiology-related activities
B. Untuk membersihdanmembilas dengansegera bahagianbadanataupakaianyang terkena
bahankimia.
To wash and rinse parts of the body or clothing that have come into contact with chemical
substances
C. Untuk membilas serta mencuci dengansegera mata yang terkena bahankimia
To rinse and wash the eye that has come into contact with chemical substances
D. Untuk menjalankaneksperimenyangmenggunakanbahanyang mudahmeruap, mudahterbakar,
beracun, mengakisdanberbau
To carry out experiments that use substances which are volatile, flammable, poisonous, corrosive
or pungent
3. Antara bahan berikut, yangmanakahbolehdibuangdi dalam singki?
Which of the following can be disposed of into sinks?
A. Kulit ubi kentang / Skin of potatoes
B. Larutan asidhidroklorikpekat / Concentrated acid hydrochloric acid solution
C. Larutan natriumklorida cair / Diluted sodium chloride solution
D. Larutan ammonia/ Ammonia solution
4. Apakahkelebihan menggunakanpemadamapi jenisABC?

2. What is the advantage of using fire extinguisher type ABC?
A. Boleh menyelimutkan mangsa / Can cover the victim
B. Tidakberbahaya kepada manusia danhaiwan/ Not harmful to human and animals
C. Perlu selalu diselenggara / Require frequent maintenance
D. Tidaktahanlama / Does not last long
Soalan Objektif Text Book F4/ Objective question from f4 Text Book
1. Which ofthe followingself-protectionequipment is usedto protect the eyes fromchemicalsplashes?
A. Lab coat
B. Goggle
C. Face mask
D. Sunglasses
2. Umairah is assigned to mix concentratedacid withwater duringanexperiment inthe laboratory. Where is the most
suitable place for Umairahto perform the experiment?
A. In the sink
B. In the laminar flowcabinet
C. In the fume chamber
D. On the laboratorydesk
3. While conducting an experiment onhow impurities canaffect the boilingpoint ofwater, Zarif’s eyes were splashed by
salt solution. As a member of Zarif’s group, what should youdo?
A. P and Q
B. P and S
C. Q and R
D. Q and S
4. Which ofthe followingsubstances can be disposed ofinto a sink?
A. Salt solution
B. Cooking oil
C. Concentrated hydrochloric acid
D. Ammonia with pH12
5.

3. A. Needle
B. Glass
C. Dried agar
D. Rat carcassusedinanexperiment
6. Nayli conducted anexperiment using chicken blood. What shouldNayli do to dispose ofthe waste after the experiment
is over?
A. Decontaminate it byautoclave anddispose it straight awayinto the sink
B. Pack it well ina biohazardplastic bag to be frozen
C. Put it into a special container
D. Pack and place it intoa biohazard plastic bag
7. Arrange the steps in handling chemical spillage intothe correct sequence.
A. W ➝ X ➝ Y ➝ Z
B. Z ➝ W ➝ X ➝ Y
C. Y ➝ W ➝ X➝ Z
D. X ➝ W ➝ Y ➝ Z
8. Whyis mercuryharmful to humans?
A. Mercurycan attack the nervous system, digestive tract, reproductive system and kidneys
B. Mercurycan cause blockage of the upper airway
C. Mercurycan cause a stroke
D. Mercurycan cause seizures
BahagianB/ Section B
1.

4. P S
_________________________________
_________________________________
_________________________________
_________________________________
_________________________________________________________________________________
3.
.
2.

5. _______________________________________________________________________
________________________________________________________________________
________________________________________________________________________
4.
a.
b.
5. a.
_____________________________________________________________________
b.

6. b. Satu kebakarankecil berlaku di dalammakmal sains akibat tumpahan minyak. Apakahalat pemadam kebakaran
yang tidak sesuai digunakandalam situasi ini?
A small fire occurs in the science laboratory due to the oil spoilage. Ahat is the fire extinguisher that is not suitable
to be used in this situation? Give one reason for your answer.
_____________________________________________________________________________________________
6.
7. a.
___________________________ ___________________________
___________________________ ___________________________

7. _____________________________________________________________________________________________
_____________________________________________________________________________________________
Bahagian C / Section C
Terdapat dua jenis bahan sisaiaitu bahan sisayangboleh dibuang ke dalam singki danbahansisa yang tidak boleh
dibuangke dalamsingki.
There are two types of waste which are waste that can disposed of into sinks and waste that cannot be disposed
into sinks
(a) Apakahyang dimaksudkandenganbahansisa yang bolehdibuangke dalamsingki?
What is meant by waste that can be disposed of into sinks?
[2 markah / 2 marks]
(b) Dibawah menunjukkantiga contohbahansisa yang tidak bolehdibuangke dalamsingki.
Below shows three examples of waste that cannot be disposed of into sinks.
Kaji maklumat diatas danbina konsep bahan sisayangtidakboleh dibuang ke dalam singki.
Study the above information and construct the concept of waste cannot be disposed of into sinks.
[6 markah / 6 marks]
(c) Dibawah menunjukkanbeberapa contoh bahan yang dibuang ke dalam singki olehseorang murid selepas
menjalankaneksperimen.
Below shows a few examples of substances that have been disposed of into sinks by a student after an experiment.
Pada pendapat anda, adakahbahan-bahan tersebut sesuai untukdibuangke dalamsingki?Wajarkan jawapan anda.
In your opinion, are the substances suitable to be disposed of into sinks? Justifyyour answer.
[4 markah /4 marks]
Text Book Exercise
Merkuri Asid hidroklorik Mikro
Mercury Hydrochloric acid Microbes
Air suling Kaldu bakteria Kertas Turas
Distilledwater Bacteria broth Filer paper
Bacteria broth
Distilled water