Gas

Key Stage 2

Meaning

Gas is a state of matter that can change size and shape to fit any container.

About Gases

Gases are a state of matter that:

Cannot hold their shape. Fit the shape of their container. Can be poured and will flow.

Gases can be squashed into a smaller size.

Examples of gas materials:

• Air (A mixture of gases, mostly nitrogen and oxygen)
• Steam

Key Stage 3

Meaning

A State of Matter in which the particles are separated by large distances and can move freely.