Year 8 Chemistry Vocabulary Part 1

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Matter

Back

Anything that takes up space and has mass

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Solid

Back

A state of matter where the particles are packed closely together in a highly organized manner.

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Liquid

Back

A state of matter where the particles are still quite close together but not as tightly packed together as solids.

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Gas

Back

A state of matter where the particles are very far apart and can move about freely.

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Diffusion

Back

The movement of molecules from a region of high concentration to a region of low concentration.

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Melting

Back

The process by which a substance in the solid-state changes to the liquid state.

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Solidification (or freezing)

Back

The process by which a substance in the liquid state changes to the solid state.

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Condensation

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The process by which a substance in the gaseous state changes to liquid. Occurs by way of cooling down a gas.

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Sublimation

Back

The process by which a substance in the solid state changes directly into a gaseous state (skipping the liquid state).

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Melting point

Back

The temperature at which a substance changes from solid to liquid.