Question detail
Which exam-check sentence would most directly answer a question about chemistry only?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Chemical cells and fuel cells (chemistry only)
Question
- A. chemistry only: correct Unit 4.5 answer for Fuel cells
- B. Incorrect exam-check: gives a memorised phrase without subtopic detail
- C. Incorrect exam-check: omits the key Energy changes vocabulary
- D. Incorrect exam-check: answers a different objective from Chemical cells and fuel cells (chemistry only)
Answer
The correct option is chemistry only: correct Unit 4.5 answer for Fuel cells.
Explanation
The correct option is chemistry only: correct Unit 4.5 answer for Fuel cells. It directly supports the approved learning objective to (chemistry only) Explain why hydrogen fuel cells can be considered as an alternative to rechargeable cells and batteries. This exam-check version keeps the answer anchored to Fuel cells within Chemical cells and fuel cells (chemistry only), 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
Misunderstanding Hydrogen Fuel Cells
Students often think that hydrogen fuel cells are the same as rechargeable batteries and do not understand the differences in how they generate electricity.
Emphasize that hydrogen fuel cells produce electricity through the oxidation of hydrogen, while rechargeable batteries store and release energy through reversible chemical reactions.
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