1) a substance that takes part in and undergoes change during a reaction a) reactant b) product c) precipitate 2) a substance obtained from another substance through chemical change a) catalyst b) product c) reactant 3) any substance that increases the rate of a reaction without itself being consumed a) precipitate b) coefficient c) catalyst 4) an insoluble solid that emerges from a liquid solution a) precipitate b) balanced equation c) coefficient 5) shows how many atoms or molecules of the substance are involved in the reaction a) balanced equation b) coefficient c) combination 6) an equal number of atoms of an element is present on both sides of a chemical equation a) combination b) combustion c) balanced equation 7) a reaction in which two reactants combine to form one product a) combination b) combustion c) decomposition 8) a type of chemical reaction in which a compound and an oxidant react to produce heat and a new product a) decomposition b) combustion c) single replacement 9) A chemical reaction in which a compound breaks down into two or more simpler substances  a) single replacement b) double replacement c) decomposition 10) A chemical reaction in which one element is substituted for another element in a compound a) single replacement b) double replacement c) spectator ion 11) A chemical reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds a) spectator ion b) double replacement c) soluble 12) an ion that exists as a reactant and a product in a chemical equation a) soluble b) chemical reaction c) spectator ion 13) the degree to which a substance dissolves in a solvent to make a solution a) soluble b) chemical reaction c) yield 14) a process in which one or more substances, known as reactants, are converted to one or more different substances, known as products a) yield b) chemical reaction c) compound 15) a measure of a chemical reactions efficiency, as a ratio of moles of product to moles of reactant a) compound b) aqueous c) yield 16) any substance composed of identical molecules consisting of atoms of two or more chemical elements a) compound b) aqueous c) phase 17) a solution in which the solvent is liquid water a) phase b) aqueous c) diatomic molecule 18) a chemically uniform quantity of matter that can be separated mechanically from a nonhomogeneous mixture a) diatomic molecule b) ionic equation c) phase 19) contains two atoms that are chemically bonded a) diatomic molecule b) ionic equation c) aqueous 20) a chemical equation in which the electrolytes in aqueous solution are expressed as dissociated ions a) diatomic molecule b) ionic equation c) phase

Unit 4 vocab--chemical reactions

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