14
QuizMultiple Choice

The Energy of Chemical Reactions — Test

Question 14 • 26-27 - C - RUSD Chemistry in the Earth System

Which statement best describes why industry uses heterogeneous catalysts?

Answer
A
They cause stronger bonds to form between molecules.
B
They tend to be more stable.
C
They are all gases at room temperature.
D
They form strong bonds with reactant molecules.

Explanation

Heterogeneous catalysts are in a different phase from the reactants, so they are often easy to separate from the reaction mixture and reuse. They also tend to be stable under reaction conditions, making “They tend to be more stable” the best choice. They work by providing a surface that helps lower the activation energy, not by forming stronger bonds between reactant molecules.

AI-written and checked against the verified answer.

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