Properties and Changes in Matter

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Physical Property

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A characteristic of a substance that can be observed or measured without changing the substance's identity.

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Density

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The mass of a substance per unit volume.

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Solubility

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The ability of a substance to dissolve in another substance.

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Melting Point

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The temperature at which a solid becomes a liquid.

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Boiling Point

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The temperature at which a liquid becomes a gas.

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States of Matter

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The distinct forms that different phases of matter take on: gas, liquid, solid.

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Chemical Property

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

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Reactivity

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The tendency of a substance to undergo chemical reaction.

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Flammability

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The ability of a substance to burn or ignite, causing fire or combustion.

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Physical Change

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A change in a substance that does not change its identity.