Transition metals often make good catalysts.Identify the best definition of a catalyst.A catalyst is a substance that speeds up the rate of the reaction without being used up or being changed.A catalyst is a substance that affects the rate of reaction.A catalyst is a substance that speeds up the rate of the reaction and is used up.A catalyst is a substance that slows down the rate of the reaction, this gives the reaction more time to occur.

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.

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 are _____________________________changed during chemical reactions.

What effect does a catalyst have on a reaction?A.A catalyst increases the concentrations of products.B.A catalyst contributes energy to a reaction.C.A catalyst speeds up the rate of a reaction.D.A catalyst makes it possible for a reaction to happen.

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