Because energy is _____ in an exothermic reaction, the products are lower in energy than the reactants.

For an exothermic reactionH of the products is less than H of the reactantsH of the products is more than H of the reactantsH of the products is equal to H of the reactantsΔH is always positive

A minimum amount of energy is required to start a chemical reaction. What is this energy called?Activation energyEndothermic energyReaction energyExothermic energy2On a reaction profile, what does the difference between the reactants line and the products line represent?The energy changeThe activation energyThe temperature changeThe amount of product formed3If the energy change on a reaction profile goes down, what does this tell you about the reaction?It is exothermicMore heat is requiredThere is not enough reactantIt is endothermic4Which of the following statements about endothermic reactions is true?They do not require any activation energyThe products will always have less energy than the reactantsThe products will always have more energy than the reactantsThe products will always have the same energy as the reactants

If the reactants have less energy than the products, what kind of a reaction must have taken place?

Which of the following describes an exothermic reaction?A.Hf, reactants = 0B.Hf, reactants = Hf, productsC.Hf, reactants > Hf, productsD.Hf, reactants < Hf, products

When energy is absorbed, the products are _____ in energy than the reactants.