Question detail
Which comparison keeps chemistry only separate from a nearby Unit 4.5 idea?
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 comparison: says the two nearby ideas mean the same thing
- C. Incorrect comparison: uses the same evidence for exothermic and endothermic cases
- D. Incorrect comparison: ignores the direction of energy transfer
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 comparison 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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