Question

what is a catalyst?​

Answer 1

Answer:

A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions.

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Answer 2

Answer:

it is substance that speed up a chemical reaction,but is not consumed by the reaction hence a catalyst can be recovered chemically unchanged at the end of the reaction it has been used to speed up,or catalyst