States of Matter
Science: Year 3 & 4 National Curriculum, topic 8.1.1
The States of Matter
There are three main states of matter. The three states of matter are:
Solid
Liquid
Gas
Spotting the State of Matter
You can tell what state of matter a material is by looking at it.
Solids
- Solids will hold their shape.
- A block of ice won't change shape (unless it changes to a liquid).
Liquids
- Liquids take the shape of the container they're in.
- Water goes to the shape of a glass when you put water in a glass.
- Water forms a pool on the floor.
Gases
- Gases will escape from unsealed containers.
- Steam is a gas.
- Steam will escape from your kettle because the kettle is not sealed.
Test yourself on States of Matter
Which of these are states of matter?
Which of these are true about solids, liquids and gases?
Which of these is a solid?