Question detail
For Exothermic and endothermic reactions, which comparison statement most accurately matches this AQA Chemistry objective: Draw a simple reaction profile for an endothermic reaction.
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. Correct comparison: Draw a simple reaction profile for an endothermic reaction. within Reaction profiles
- B. Distractor comparison A: confuses this with a different Exothermic and endothermic reactions idea
- C. Distractor comparison B: uses the right words but gives the wrong cause or condition
- D. Distractor comparison C: answers a neighbouring objective instead of Reaction profiles
Answer
The answer is Correct comparison: Draw a simple reaction profile for an endothermic reaction. within Reaction profiles.
Explanation
The correct option is "Correct comparison: Draw a simple reaction profile for an endothermic reaction. within Reaction profiles" because it directly matches the learning objective in Reaction profiles. The other options are wrong because they either switch to a neighbouring Exothermic and endothermic reactions idea, reverse the chemistry relationship, or describe a condition that does not answer this objective.
Common mistake
Mislabeling Reaction Profiles
Students often label the energy change in an endothermic reaction profile incorrectly, indicating it as a decrease instead of an increase.
Remember that in an endothermic reaction, the products have more energy than the reactants, so the energy change should be labeled as an increase.
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