Changing states
Changing States of Matter.
Matter can change when heated or cooled.
1. Melting.
Solid to Liquid.
Happens when we heat a solid.
Particles start to move faster.
They spread a little and slide.
2. Freezing.
Liquid to Solid.
Happens when we cool a liquid.
Particles slow down.
They come close and lock together.
3. Evaporation.
Liquid to Gas.
Happens when we heat a liquid.
Particles move fast and fly apart.
4. Condensation.
Gas to Liquid.
Happens when gas is cooled.
Particles slow and come closer.
Fun Fact
When water freezes into ice it expands and becomes lighter
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