Question detail
Which statement gives the clearest definition of endothermic reaction in Energy transfer during exothermic and endothermic reactions?
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. endothermic reaction: correct Unit 4.5 answer for Energy transfer during exothermic and endothermic reactions
- B. Incorrect definition: treats endothermic reaction as a general chemistry label
- C. Incorrect definition: moves the answer outside Energy transfer during exothermic and endothermic reactions
- D. Incorrect definition: reverses the energy-transfer wording
Answer
The correct option is endothermic reaction: correct Unit 4.5 answer for Energy transfer during exothermic and endothermic reactions.
Explanation
The correct option is endothermic reaction: correct Unit 4.5 answer for Energy transfer during exothermic and endothermic reactions. It directly supports the approved learning objective to define an endothermic reaction as one that takes in energy from the surroundings. This definition version keeps the answer anchored to Energy transfer during exothermic and endothermic reactions 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
Misidentifying the source of energy
Students often think an endothermic reaction takes energy from the reactants rather than from the surroundings
Clarify that in an endothermic reaction the reactants absorb energy that comes from the surroundings, so the surroundings lose energy and cool down
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