Solids: , particles are close together in a regular pattern, particles vibrate about a fixed position, these have a fixed shape, these cannot flow, Liquids: , particles are close together and arranged randomly, particles can move around each other, these take the shape of their container, these flow and move randomly, Gases: , particles are far apart and arranged randomly, particles move quickly in any direction, these completely fill their container, these are the only ones which can be compressed or squashed,

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