Question detail
Which diagram or label choice best matches activation energy in this Energy changes subtopic?
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. activation energy: correct Unit 4.5 answer for Reaction profiles
- B. Incorrect label: confuses the labelled quantity with activation energy
- C. Incorrect label: places the idea on the wrong part of the reaction or cell model
- D. Incorrect label: uses the product/reactant relationship the wrong way round
Answer
The correct option is activation energy: correct Unit 4.5 answer for Reaction profiles.
Explanation
The correct option is activation energy: correct Unit 4.5 answer for Reaction profiles. It directly supports the approved learning objective to define activation energy as the minimum energy particles need to react. This calculation version keeps the answer anchored to Reaction profiles within Exothermic and endothermic reactions, and avoids mixing energy transfer, reaction profiles, activation energy, chemical cells, fuel cells, exothermic reactions and endothermic reactions unless the objective names them.
Common mistake
Confusing Activation Energy
Students often confuse activation energy with the overall energy change of a reaction.
Remember that activation energy is the minimum energy required for particles to react, while overall energy change refers to the difference in energy between reactants and products.
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