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a substance formed as a result of a chemical reaction


materials that are present before a reaction


a reaction with 2 or more substances combine to form a more complex compound

replacement reaction

a reaction where one element replaces another in a compound


a number in a chemical formula that tells the atoms in a molecule or ratio of elements in a compound

conservation of mass

matter is not created or destroyed during a chemical reaction


a numer telling how many molecules are involved in a chemical reaction


a reaction where compounds are broken down into simpler products

chemical formula

a combination of symbols that represent the elements in a compound

chemical equation

uses symbols and formulas instead of words to show a chemical reaction

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