5.1 Particle model

What are the three states of matter?

• air, water, fire

• solids, liquids, gases

• ice, water, steam

• USA, UK, UAE

Which of these materials will have the most similar properties?

• air, oxygen, ice

• water, iron, air

• iron, stone, wood

• oil, water, wood

All liquids:

• have a fixed volume and take the shape of their container.

• have a fixed volume and a fixed shape.

• will spread out until their volume has doubled.

• can change their volume but not their shape.

Which of the three states of matter are usually difficult to compress (squash)?

• solids only

• liquids only

• solids and liquids

• solids, liquids and gases

The particles in solids:

• do not move at all.

• vibrate in one place.

• can move past each other.

• can move freely in all directions.

Which is the best description of a solid:

• A the particles are very close together.

• B the particles are as far apart as possible.

• C the particles are quite close together.

• D there are no particles.

In which state are the particles close together but can still move past each other?

• gases only

• liquids only

• solids only

• all three states

A gas can be squashed because:

• the particles are held tightly in place.

• there are no particles.

• the particles are far apart.

• the particles are squashy.

If you put a drop of coloured liquid into a glass of cold water and leave it to stand without stirring, the colour spreads through the water. This is called:

• divination

• dissolving

• dissuasion

• diffusion

Which of these changes involve the mixing of particles of different substances?

• water boiling in a kettle

• chocolate melting in your hand

• particles of dust moving about in the air

• perfume being smelled across a room