A)The breaking of bonds requires energy,and the formation of bonds releases energy.
B)Activation energy is the minimum amount of energy required to initiate a chemical reaction.
C)A reaction is exothermic if the products have a lower energy than the reactants.
D)A reaction is endothermic if the reactants have a lower energy than the products.
E)The overall change in enthalpy (∆H)for a reaction is determined by the difference in energy between the products and the activated complex.
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