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-