Science Vocabulary

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matter

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Anything that has mass and takes up space.

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substance

Back

A particular kind of matter with uniform properties.

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physical property

Back

A characteristic of a substance that can be observed or measured without changing its identity.

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chemical property

Back

A characteristic of a substance that describes its ability to change into different substances.

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atom

Back

The basic unit of a chemical element.

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element

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A substance that cannot be broken down into simpler substances by chemical means.

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molecule

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A group of atoms bonded together.

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compound

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A substance formed when two or more chemical elements are chemically bonded together.

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mixture

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A combination of two or more substances that are not chemically bonded.

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distill

Back

To purify a liquid by heating it so that it vaporizes, then cooling and condensing the vapor.