Explaining what's happening
1 mark · NormalWhich statement best explains why a reaction only occurs when particles collide with at least the activation energy?
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Correct option: It provides enough energy to break existing bonds for the reaction to occur.
Common mistakes: Choosing option 1 or 3 because they mention frequency or temperature, not energy for bond breaking
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Marking points
A1 · 1 mark · Correct option selected
Worked solution
The correct answer is: It provides enough energy to break existing bonds for the reaction to occur.