For example, state, melting point, conductivity, etc. of solids, liquids and gases. Learn more on states of matter in this podcast. Listen to the full series on BBC Sounds.

The Earth, its oceans and atmosphere are made of elements and compounds in different states. The particle model may be used to explain the different properties of the solid, liquid and gas …

There are three main states of matter: solid, liquid and gas. When a substance changes state, this is a physical change because no new substances are produced and the change is reversible.

Solids, liquids and gases. The arrangement, movement and spacing of particles are different in solids, liquids and gases. Find out more with BBC Bitesize. For students between the...

Substances can exist in three states of matter - solid, liquid and gas. Substances can change states. To change the state of a substance energy must be transferred to, or from, the substance.

The particle model explains the differences between solids, liquids and gases. Changes of state Solids, liquids and gases change state when they are heated or cooled.

There are three main states of matter: solid, liquid and gas. When a substance changes state, this is a physical change because no new substances are produced and the change is reversible.

Solid, liquid and gas are the three states of matter. Find out more about the states in this Bitesize Primary KS2 Science guide.

solids - particles are close together in a regular structure and vibrate about fixed positions; liquids - particles are close together but free to move past each other randomly

The amount of energy needed to change state from solid to liquid, and from liquid to gas, depends on the strength of the forces between the particles of a substance.

The closeness, arrangement and motion of the particles in a substance change when it changes state. Simple diagrams of particles in a solid, liquid and a gas are shown like this: