Catalysts are _____________________________changed during chemical reactions.

Catalysts are “used up” in chemical reactions.Group of answer choicesFalseTrue

What distinguishes a catalyst from other substances involved in a chemical reaction?Select one:a.A catalyst remains unchanged after the reaction.b.A catalyst is an intermediate in the reaction.c.A catalyst is produced during the reaction.d.A catalyst is consumed during the reaction.

A catalyst is added to a reaction. Which of the following statements best describes the effect that a catalyst has on a reaction? Group of answer choicesThe catalyst gives the reactants more kinetic energyThe reaction rate is decreasedThe activation energy of the reaction is increasedThe activation energy of the reaction is decreased

increases the rate of a chemical reaction without being consumed or permanently altered in the process. Catalysts work by providing an alternative reaction pathway with a lower activation energy

Catalysts work by lowering the __________ __________. What two words complete the sentence?