Key Stage 2
Meaning
State of matter means whether a material is solid, liquid or gas.
About States of Matter
- Materials can be solid, liquid or gas.
- The state of matter can be changed by heating or cooling the material.
- Heating can turn a solid into a liquid. This is called melting.
- Heating can turn a liquid to a gas. This is called evaporating.
- Cooling can turn a gas into a liquid. This is called condensing.
- Cooling can turn a liquid into solid. This is called freezing.
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| Brick is a solid material. | Water is a liquid material. | Inside the balloon is a gas called helium. |