Year 7 Chemistry Vocabulary

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mass

Back

A measurement of the amount of particles in an object or substance. Units - grams (g)

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volume

Back

A measurement of the amount of space an object or substance takes up. Units - millilitres (mL) or cubic centimetres (cm3)

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matter

Back

Any object or substance that is made up of particles and therefore has mass and volume.

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solid

Back

A state (phase) of matter where the particles are next to each other in fixed positions.

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liquid

Back

A state (phase) of matter where the particles are next to each other but can roll past each other, having a definite volume but no definite shape.

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gas

Back

A state (phase) of matter where the fast moving particles are very far apart with no fixed shape but will spread out to fill a container.

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melting

Back

A change of phase where a solid turns into a liquid.

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condensing

Back

A change of phase where a gas turns into a liquid.

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boiling

Back

A change of phase where a liquid turns into a gas.

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evaporating

Back

A change of phase where a liquid turns into a gas at a low temperature.