States of Matter and Changes

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Matter

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Anything that has mass and takes up space.

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Solid

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A state of matter that has a definite shape and volume.

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Liquid

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A state of matter that has a definite volume but takes the shape of its container.

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Gas

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A state of matter that has no definite shape or volume.

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Mixture

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

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Solution

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A mixture that has the same composition throughout.

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Physical Change

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A change that affects one or more physical properties of a substance.

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Chemical Change

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A change that produces one or more new substances.

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Key Concept: States of Matter

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Matter exists in three states: solid, liquid, gas.

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Key Concept: Mixtures and Solutions

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Mixtures and solutions are different types of combinations.