01 Jirim 1 – Revision.my

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Question 1 of 11

1. Question
1 point(s)
Teori zarah jirim menyatakan bahawa

Jirim terdiri daripada sebilangan besar zarah yang kecil dan diskrit.

Antara fenomena berikut, yang manakah tidak menyokong hipotesis ini?
- Gerakan Brown
- Bentuk suatu pepejal adalah tetap.
- Resapan wap bromin dalam gas.
- Isi padu suatu bahan bertambah apabila ia berubah dari cecair menjadi gas.
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Question 2 of 11

2. Question
1 point(s)
CHEM0201020
Which of the following phenomena provides the best evidence for particle theory of matter?
- The smell of durian spreads to all parts of a room.
- Change of temperature of an object.
- Oil does not dissolve in water.
- Carbon can conduct electricity.
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Question 3 of 11

3. Question
1 point(s)
CHEM0201030

The diagram shows an experiment to study the diffusion of bromine in gas. When the cover was removed, both jars were filled with brownish gas in a few minutes. Which of the statements best explains the observation?
- I. Bromine particles penetrate into the space in between the air particles in the gas jar.
- II. Bromine reacts with the air to produce a brown gas
- III. Bromine gas is made up of tiny discrete particles.
- IV. The bromine and air molecules are in constant and random motion.
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Question 4 of 11

4. Question
1 point(s)
CHEM0201040

The diagram above shows the movement of bromine particles in the air. Name the movement involved.
- Vaporization
- Sublimation
- Diffusion
- Condensation
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Question 5 of 11

5. Question
1 point(s)
CHEM0201050

A piece of copper(II) sulphate crystal is placed in a test tube containing some gel as shown in the diagram above. Predict what will be the observation after a few days?
- The copper(II) sulphate crystals remain unchanged at the bottom of the gel.
- The blue colour of copper sulphate crystal becomes colourless.
- The blue colour of copper sulphate crystal turn into purple after reacting with the gel.
- The gel turns into blue in colour.
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Question 6 of 11

6. Question
1 point(s)
CHEM0201060

The diagram shows the Brownian movement. Such movement can be observed under a light microscope when
- I. bromine vapour diffuse in air
- II. pollen grains suspended in water
- III. movement of smoke particles in air
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Question 7 of 11

7. Question
1 point(s)
CHEM0201070
Which of the following take place when water solidifies to become ice?
- Water molecules get nearer to each other.
- Energy is absorbed from the surrounding.
- The mass increase.
- Water molecules are not arranged orderly.
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Question 8 of 11

8. Question
1 point(s)
CHEM0201080
Which of the following will happen when a liquid freeze?
- I. The temperature decrease.
- II. Heat is released to the surrounding.
- III. The average kinetic energy of the particles decrease.
- IV. The particles get nearer to each others.
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Question 9 of 11

9. Question
1 point(s)
CHEM0201090
Which of the following shows the correct comparison of the average kinetic energy of the particles in a solid, liquid and gas for a given substance?
- Solid > Liquid > Gas
- Solid < Liquid < Gas
- Solid = Liquid = Gas
- It depends on what kind of substance it is.
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Question 10 of 11

10. Question
1 point(s)
CHEM0201100
Which of the following statements is not true about the particles in a gas?
- The gas particles are arranged in regular patterns.
- The particles of gas move at high speed
- The collision between the gas particles and the wall of the container is elastic.
- The gas particles move randomly in all direction.
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Question 11 of 11

11. Question
1 point(s)
CHEM0201110

The diagram shows the arrangement of particles in a substance. Which of the following is not the characteristic of the substance in this state?
- The particles move randomly and slowly and sometimes will collide against each other.
- The volume of the object is not fixed.
- Particles are not arranged in order. Most of the particles are still in contact with one another.
- Difficult to be compressed.
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