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Substance

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A particular kind of matter or material.

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Interaction

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The action or influence that one thing has on another.

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Evidence

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A thing or group of things that helps you find an answer.

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Properties

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A characteristic or quality of a substance or material that describes and identifies it.

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Weight

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How heavy an object or quantity of a substance is.

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Conservation

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In science, conservation means to save or keep the same.

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Vanish

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To disappear or become unnoticeable, especially quickly.

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Dissolve

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How substances mix to form a solution.