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16 Cards in this Set

  • Front
  • Back
product
substance produced by a chemical reaction
reactant
substance that enters into a chemical reaction
chemical reaction
process in which substances undergo physical and chemical changes that result in the formation of new substances with different properties
endothermic
chemical reaction in which energy is absorbed
exothermic
chemical reaction in which energy is released
kinetics
study of rates of chemical reactions
collision theory
theory that relates collisions among particles to reaction rate: reaction rate depends on such factors as concentration, surface are, temperature, and catalysts
conservation of mass
mass of reactants is equal to the mass of the products in every chemical reaction. usually mass lost is from human error or leaking
reaction rate
measure of how quickly reactants change into products
acid
compound with a pH below 7 that tastes sour, turns blue litmus paper red, reacts with metals to produce hydrogen gas, and ionizes in water to produce hydrogen ions: proton donor
bases
compound with pH above 7 that tastes bitter, is slippery to the touch, turns red litmus paper blue
salt
compound formed from the positive ion of a base and the negative ion of an acid
precipitate
insoluble substance that crystalizes out of a solution
catalyst
substance that increases the rate of a reaction without being changed by the reaction
pH scale
measure of the hydronium ion concentration of a solution; measured on a scale from 0 to 14
activation energy
energy required for a chemical reaction to occur