Cambridge IGCSE · Science - Combined (0653)

States of matter: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on States of matter.

10 questions24 marksFree, no account

Question 1

1 mark

What happens to the separation and motion of particles when a substance condenses?

Question 2

1 mark

Which row correctly identifies the changes in the separation and average speed of particles when a substance undergoes freezing?

Question 3

1 mark

During the process of melting, a solid is heated but its temperature remains constant until all the solid has turned into a liquid. Why does the temperature not increase during this time?

Question 4

1 mark

According to the kinetic particle theory, what happens to the average kinetic energy of the particles in a substance as its temperature increases?

Question 5

1 mark

Which diagram represents the arrangement of particles in a liquid?

Diagram W: Particles widely spaced and moving randomly.
Diagram X: Particles close together in a regular lattice.
Diagram Y: Particles close together and touching but randomly arranged.
Diagram Z: Particles vibrating about fixed points in a pattern.

Question 6

2 marks

Compare the compressibility of a liquid and a gas based on the kinetic particle model.

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Question 7

3 marks

Using the kinetic particle theory, describe the changes in particle arrangement and motion when a substance melts.

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Question 8

5 marks

Explain, in terms of the kinetic particle theory, how increasing the temperature of a gas in a rigid, fixed-volume container leads to an increase in pressure.

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Question 9

4 marks

The states of matter have distinct physical properties based on their particle structure.

(a) Identify which state of matter (solid, liquid, or gas) cannot easily be compressed and has a definite shape.

(b) Describe the motion of particles in:

(i) a solid
(ii) a liquid

(c) State the term used to describe the change of state from a liquid to a gas at the boiling point.

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Question 10

5 marks

The kinetic particle model describes how the arrangement and motion of particles change when a substance changes state.

(a) Compare the separation and arrangement of particles in a solid with those in a liquid.
(b) Using the kinetic particle theory, explain why the pressure of a fixed mass of gas increases when its temperature is increased at a constant volume.
(c) Name the process that occurs when a gas changes directly into a liquid.

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