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The law that says mass can't be made or destroyed with either chemical or physical changes.

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The ending result of a chemical reaction.

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The starting substance in a chemical reaction

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A chemical reaction in the form of letters and numbers.

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A chemical reaction that requires heat in order for it to occur.

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A reaction in which heat is released out of the substance.

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A precipitate is a solid that is made by a chemical reaction.

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When two or more substances react to each other and are changed. When bonds in atoms are broken, new molecules are created.