10
QuizMultiple Choice

Catalysts — Quiz

Question 10 • 26-27 - C - RUSD Chemistry in the Earth System

Which statement describes a catalyst ?

Answer
A
Catalysts provide a lower energy pathway for the reaction.
B
Catalysts appear as reactants in a chemical equation.
C
Catalysts are completely consumed by the reaction.
D
Catalysts speed up chemical reactions by increasing surface area.

Explanation

A catalyst speeds up a reaction by providing an alternative pathway with a lower activation energy. It is not completely consumed, and increasing surface area is not how a catalyst works. Therefore, the correct statement is that catalysts provide a lower-energy pathway for the reaction.

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