Teachers, save “28.4.20 UOI - Solid, Liquid or Gas?” to assign it to your class.

A material may be in one of three states: solid, liquid or gas. Solids: keep their shape. Can't be squashed easily. Don't flow easily. Liquids: take the shape of the container they are in. Can't be squashed easily. Flow easily. Gases: take the shape of the container they are in. Can be squashed easily. Flow easily.