Unit 1: Matter

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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

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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

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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 material made up of two or more different substances that are not chemically combined.

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Distill

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