CIE IGCSE Chemistry

Topic Questions

1.1 Solids, Liquids & Gases

11 mark

The following four statements describe the arrangement of particles in a substance.

1

Particles are moving in all directions

2

Particles are arranged in neat rows

3

Particles can move past each other

4

Particles vibrate about their positions

Which of the four statements describe the arrangement of particles in a solid?

A        1 and 2               B        2 and 4               C        1 and 3               D        2 only

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21 mark

The diagram shows a cup of hot chocolate made which was prepared by mixing boiling water with chocolate powder.

M0vngQ7d_q2-1-1-mcq-medium-cie-igcse-che

Which row correctly describes the particles of water in the air above the cup compared to those in the hot chocolate drink inside the cup?

  Particles move faster Particles are closer together
A ✓

✓

B ✓

cross times

C cross times

✓

D cross times

cross times

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31 mark

The diagram shows what happens when a blue soluble crystal is placed in a beaker of water.

q3

Which row correctly describes the processes taking place?

  Chemical process Dissolving Diffusion
A ✓ ✓ ✓
B cross times cross times ✓
C ✓ cross times ✓
D cross times ✓ ✓

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41 mark

Substance X can occur in three different physical states as shown in the diagram.

q4-1-1-mcq-medium-cie-igcse-che

Which statement is correct?

  •  In state 1 the particles vibrate around fixed positions but don't move

  • Diffusion occurs in the phase change from state 1 to 2

  • The volume of the substance in state 3 is fixed

  • Condensation occurs in the phase change from state 3 to 2

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51 mark

Matter exists in three states which are solid, liquid and gas. Phase changes occur when matter changes from one state to another.

In which changes do the particles move closer together?

gas   rightwards harpoon over leftwards harpoon from 3 to 1 of  liquid   rightwards harpoon over leftwards harpoon from 4 to 2 of  solid

  •  3 and 4

  •  1 and 3

  • 4 only

  • 1 and 2

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