Question detail
Why does changing one metal electrode affect the voltage of a simple cell?
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. Different metals have different reactivities, changing the potential difference.
- B. Metals all react identically, so voltage cannot change.
- C. The electrolyte becomes a solid when the metal changes.
- D. Voltage depends only on the size of the beaker.
Answer
Correct option: Different metals have different reactivities, changing the potential difference. This answer matches (chemistry only) Describe a simple cell as two different metals in contact with an electrolyte. because it uses the correct Energy changes relationship rather than a distractor statement.
Explanation
Correct option: Different metals have different reactivities, changing the potential difference. This is correct for Cells and batteries because it directly supports (chemistry only) Describe a simple cell as two different metals in contact with an electrolyte.. The alternative choices either reverse the energy-transfer direction, confuse cell components, or describe a different Chemistry 8462 idea, so they would not answer this question accurately.
Common mistake
Misunderstanding Simple Cells
Students often describe a simple cell as just two metals without mentioning the electrolyte.
Emphasize that a simple cell consists of two different metals in contact with an electrolyte, which is essential for the chemical reaction to produce electricity.
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