Solids, liquids and gases. In a solid like this brick, the particles are regularly arranged touching their neighbours and move only by vibrating. This explains why solids have a fixed shape. In a ...

Physicists are now watching matter behave in a way that defies everyday intuition, with atoms and even light itself arranging into structures that are rigid like a crystal yet able to flow like a ...

Substances can exist in three states of matter - solid, liquid and gas. All substances are made from particles, and the forces between the particles are different in solids, liquids and gases. The ...