which statement best describes how a catalyst can speed up a chemical reaction? the catalyst decreases the…

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

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

Answer

Brief Explanations:

A catalyst works by providing an alternative reaction pathway with a lower activation energy. This allows more reactant molecules to have enough energy to react, thus speeding up the reaction. It does not directly affect the concentration of products or reactants, and while enzymes are biological catalysts, the described binding - substrate - release action is not the main way a catalyst speeds up a general chemical reaction.

Answer:

The catalyst decreases the activation energy needed.