chemistry unit 4; reactions

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11 Terms

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chemical reaction

process that forms new substances

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reactants

substances that start a reaction

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products

substances formed in a reaction

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coefficient

number placed before a formula in an equation

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subscript

number showing atoms in a compound

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synthesis reaction

two or more substances combine

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decomposition reaction

one substance breaks apart

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single replacement reaction

one element replaces another

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double replacement reaction

exchange of ions

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combustion reaction

reaction with oxygen producing CO2 and H2O

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law of conservation of mass

mass is neither created nor destroyed