Question

A catalyst either ________ or ______ the rate of chemical change but itself remains _______ at the end of the reaction.

• A. increases or decreases
• B. chemically unchanged

Answer 1

Catalyst - A substance that can either increase or decreases the rate of reaction but itself remains unchanged at the end of the reaction.

Therefore, a catalyst either increases or decreases the rate of chemical change but itself remains chemically unchanged at the end of the reaction.