Solids Liquids and Gases

All materials can be put into one of three categories or states:

1.Solids – the shape of a solid does not change on its own – it is rigid. They also have a fixed volume.

2. Liquids – the shape of a liquid does change, it is not rigid. It fits the shape of the container it is put in. Liquids flow. They also have a fixed volume.

​​​​​​​3. Gases – gases do not have a shape, they completely fill any container they are put into. They do not have a fixed volume but the same volume as the container.


Materials can change from one of these states to another. Use the PowerPoint to find out more…

Find out what temperature the fridge and freezer are at home.

What foods could be solids, liquids or gases in each compartment?

Follow these hyperlinks to learn more:-

  1. BBC Bitesize
  2. Changing states animation
  3. Selection of video clips

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