1.) Activation energy is _____. A.) the heat is released in a reaction B.) the energy barrier between reactants and products C.) the energy given off when reactants collide D.) generally very high for a reaction that takes place rapidly 2.) The rate of a chemical reaction normally ______. A.) decreases as temperature increases B.) is slowed down by a catalyst C.) increases as reactant concentration increases D.) decreases as reactant concentration increases Does any have the rest of the answers of chemistry lesson 8 unit 3? (3-9)??