Question

substance which enhances the speed of a reaction​

Answer 1

Answer:

catalyst

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.

Explanation:

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Answer 2

Answer:

Catalysts typically speed up the reaction by reducing activation energy or changing the reaction mechanism