Question detail
What is activation energy?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Exothermic and endothermic reactions
Question
- A. The energy needed to break bonds in reactants
- B. The energy released when products form
- C. The minimum energy particles need to react
- D. The energy lost to the surroundings
Answer
The minimum energy particles need to react
Explanation
Activation energy is defined as the minimum energy that reacting particles must possess in order to undergo a chemical reaction.
Common mistake
Collision Requirement Misconception
Students think that any collision between particles will automatically cause a reaction, ignoring the need for sufficient energy and correct orientation.
Explain that a reaction only occurs when colliding particles have enough kinetic energy to overcome the activation energy barrier and are properly oriented to form new bonds. Use the concept of activation energy and reaction profiles to illustrate that not all collisions lead to products.
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