Question detail
Which diagram or label choice best matches chemistry only 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
Chemical cells and fuel cells (chemistry only)
Question
- A. chemistry only: correct Unit 4.5 answer for Fuel cells
- 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 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) Evaluate advantages and disadvantages of hydrogen fuel cells compared with rechargeable cells and batteries. This calculation 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 just like rechargeable batteries without understanding the differences in their operation and fuel supply.
To fix this, students should focus on the unique features of hydrogen fuel cells, such as the continuous supply of fuel and oxygen, and how they produce electricity through oxidation reactions, unlike rechargeable batteries that store and release energy.
Related flashcards
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Related practice questions
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