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==Key Stage 3==
===Meaning===
The '''particle model''' is a [[Scientific Theory|scientific theory]] that [[explain]]s the [[property|properties]] of [[solid]]s, [[liquid]]s and [[gas]]es by suggesting that all matter is made of [[particle]]s, and that those [[particle]]s behave differently in [[solid]]s, [[liquid]]s and [[gas]]es.
===About The Particle Model===