SOLID
LIQUID
GAS
100

How are the particles arranged in solids?

The particles are packed together.

100
How are particles arranged in liquids?

In liquids the particles touch each other. But they are not so closed.

100

How are the particles arranged in gases?

Particles in gas are far apart.

200
Say a property of solids related to the particles movement

The particles can only vibrate

200

Say a property of liquid that they do not share with solids or gases.

It takes the shape of the container in which it is in.

200

How are the attractive forces in gases?

The particles can move easily because there are no attractive forces between them.

300

Complete the sentence:

SOLIDS HAVE A _____ SHAPE.

FIXED

300

Liquids can _______ shape.

change

300

Can you compress gas? what happen when you do it?

The particles move closer together and the gas takes up less space.

400

Explain why a solid expands when it is heated. 

When solids are heated more strongly, they melt. They become liquid.

400

Explain why solids and liquids cannot be compressed (squashed into a smaller volume)

Because they have a fixed volume.
400

What happen when steam in the bathroom hits a cold surface, such as a mirror?

The mirror tarnishes. It changes from vapour to water.
500

What happen with particles when they start vibrating more and more?

The particles vibrate so much that the attractive forces between them are not strong enough to hold them in a fiexed pattern. 

500

Why liquid can flow? How are  the attractive forces between the particles?

The attractive forces between the particles are weak enough to allow them to move but strong enough to hold them together.

500

How a liquid changes to gas?

If you heat water, it will boil. All the water rapidly changes to steam.

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