Which statement best describes how a catalyst can speed up a chemical reaction? The catalyst decreases the reaction energy needed. The catalyst increases the concentration of products. The catalyst binds to enzymes to release substrates. The catalyst increases the concentration of reactants.

Catalyst is any substance that causes or increases the rate of a chemical reaction without itself being consumed For example - enzymes are biocatalysts.

The catalyst can speed up a chemical reaction by reducing the activation energy or by changing the reaction mechanism.

The minimum amount of extra energy required by a reacting molecule to get converted into the product is defined as activation energy.

So, the correct answer is The catalyst decreases the reaction energy needed.

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Learn more about activation energy-

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The catalyst decreases the reaction energy needed.

Explanation:

The catalyst speeds up chemical reactions by decreasing the amount of activation energy/reaction energy needed in the reaction.

Compared to reactions without catalysts, they are much faster because there is less activation energy needed.

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