Catalysts Answers

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How does a catalyst work?

by increasing the temperature of a chemical reaction

by decreasing the pressure of a chemical reaction

by increasing the concentration of reactants in a reaction

by decreasing the activation energy of a reaction

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Which component is released from the active site of an enzyme during a chemical reaction?

reactant

product

substrate

protein

Which statement best describes the amount of catalyst that remains at the end of a reaction?

More catalyst is present at the end than at the beginning of the reaction.

Less catalyst is present at the end than at the beginning of the reaction.

The amount of catalyst is the same at the end as at the beginning of the reaction.

The catalyst is consumed by the reaction, so none remains at the end of the reaction.

If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?

The rate would increase.

The rate would decrease.

The rate would remain the same.

The rate would be zero.

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