To change the state of a substance, energy must be transferred to or from the substance. Find out more with BBC Bitesize. For students between the ages of 11 and 14.

Changing States of Matter. Matter can exist in three common states on Earth: solid, liquid and gas. This series explores how matter changes state and how we use matter in all states in our ...

The notion of a topological state of matter, a phase of matter distinct from solids, liquids, or gases, might sound like ...