States of Matter

​Matter is anything that has Mass and Volume.

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​Mass is the amount of matter or 'stuff' something has.

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​Volume is how much space something uses

​Matter can be found all over the universe in different states.

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​Solid e.g Rock

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​Liquid e.g. Water

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​Gas e.g Gas

​All matter is made of tiny things called particles.

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​They are too small to see.

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​e.g Water is made of water particles

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​Particles are always moving.

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​Particles are attracted to other particles.

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​How close these particles are to each other, decides what state of matter it is.

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​In a solid the particles are very strongly attracted to each other.

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​They are still moving but they are always touching.

​The particles in a liquid are able to 'flow and slide' over other particles.

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​They are still attracted to each other but they are more free to move.

​A gas does not have a fixed volume.

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​It will expand and fill whatever space it is in.

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​You can also compress or 'squeeze' a gas to make it smaller.