A)In an exothermic reaction,the system loses heat to the surroundings.
B)In an endothermic reaction,the system absorbs heat from the surroundings.
C)In an endothermic reaction,the reactants have a lower energy than the products.
D)In an exothermic reaction,the products have a higher energy than the reactants.
E)Exothermic reactions are characterized by a negative ∆H.
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