What does a catalyst do in a chemical reaction?

A Increases the amount of product formed

B Speeds up the reaction by lowering activation energy

C Changes the products of the reaction

D Increases the temperature

✓ Correct Answer: Option B

A catalyst speeds up a reaction by providing an alternative pathway with lower activation energy, without being consumed.

💡 Why is B) the correct answer?

The correct answer to the question "What does a catalyst do in a chemical reaction?" is Option B: Speeds up the reaction by lowering activation energy.

The other options — A) Increases the amount of product formed, C) Changes the products of the reaction, D) Increases the temperature — are incorrect for this IB Exam Prep question. As explained above: A catalyst speeds up a reaction by providing an alternative pathway with lower activation energy, without being consumed.

📚 About This IB Exam Prep Practice Question

This 2-level IB Exam Prep question from the Chemistry topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free IB Exam Prep practice test or use flashcards for spaced repetition review.

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What does a catalyst do in a chemical reaction?

✓ Correct Answer: Option B

📚 About This IB Exam Prep Practice Question

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