Flashcards on Matter and Substances

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matter

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Anything that has mass and takes up space.

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substance

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A particular kind of matter with uniform properties.

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physical property

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A characteristic of matter that can be observed or measured without changing its composition.

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chemical property

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A characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed.

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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.