Question detail
According to collision theory, what effect does increasing surface area have on reaction rate?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Rate of reaction
Question
- A. It decreases the number of collisions
- B. It increases the number of exposed particles for collisions
- C. It has no effect on the reaction rate
- D. It decreases the activation energy
Answer
It increases the number of exposed particles for collisions
Explanation
The correct answer is It increases the number of exposed particles for collisions. This answer directly addresses the question: According to collision theory, what effect does increasing surface area have on reaction rate? It matches the approved Chemistry 8462 learning objective and the linked subtopic. The other options are incorrect because they either change the rate, catalyst, reversible reaction, equilibrium, or graph context, or they do not answer the exact point being tested.
Common mistake
Misunderstanding Collision Theory
Students often think that all particle collisions result in a chemical reaction, not realizing that only certain collisions lead to reactions.
Emphasize that for a reaction to occur, particles must collide with sufficient energy and the correct orientation.
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