Chemical Reactions and Equations

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coefficient

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a whole number that appears before a reactant or product in a chemical equation

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reactant

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a starting substance in a chemical reaction

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product

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a new substance formed in a chemical reaction

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single replacement

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a reaction in which atoms of one element replace the atoms of a similar element in a compound

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double replacement

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a reaction in which similar element types in two starting compounds switch places

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synthesis

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a reaction in which more than one reactant are combined into a single product

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decomposition

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a reaction in which a single reactant is broken down into more than one product

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combustion

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a reaction in which oxygen reacts with another substance or fuel source.

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Subscript

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The tiny number in the bottom right corner of an element symbol that signifies how many atoms of that element are in a compound

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Precipitate

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a solid product that is formed from a reaction of aqueous reactants.