Question detail
For The process of electrolysis, which redox focus answer best supports this Unit 4.4 objective: Link electrolysis to decomposition of ionic compounds?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Electrolysis
Question
- A. The process of splitting up an ionic compound using electricity - correct redox focus for electrolysis
- B. Wrong redox focus: confuses electrolysis with a nearby Unit 4.4 chemical change idea
- C. Wrong particle check: uses the wrong ion, electrode, acid-base term, or product for The process of electrolysis
- D. Wrong reaction link: does not support Link electrolysis to decomposition of ionic compounds
Answer
The correct option is The process of splitting up an ionic compound using electricity - correct redox focus for electrolysis.
Explanation
The correct option is The process of splitting up an ionic compound using electricity - correct redox focus for electrolysis. The process of splitting up an ionic compound using electricity - correct redox focus for electrolysis is correct because it directly supports the approved learning objective to link electrolysis to decomposition of ionic compounds. This redox focus variant asks students to separate electrolysis from similar Unit 4.4 chemical-change ideas. The reasoning belongs to The process of electrolysis within Electrolysis, so it should not be confused with nearby ideas about acids, alkalis, bases, oxidation, reduction, displacement, reactivity, electrolysis, electrodes, ions, pH, or salt preparation unless those are named in the objective. Use the focus term electrolysis to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.4 Chemical changes. Keep acid, alkali and base distinct; keep oxidation and reduction distinct; do not mix reduction with displacement; keep electrolysis separate from electroplating; distinguish anode from cathode, positive ions from negative ions, oxidation state from ionic charge, and strong acid from concentrated acid. The other options are weaker because they either use the wrong reaction type, wrong ion, wrong electrode, wrong acid-base distinction, vague wording, or the wrong chemical-change context.
Common mistake
Confusing electrolysis with simple decomposition
Students think electrolysis is the same as a chemical decomposition reaction that occurs spontaneously, without the need for electricity or ion movement.
Explain that electrolysis is a specific type of decomposition that requires an external electric current to drive the separation of ions in a molten or aqueous ionic compound into their constituent elements at the electrodes.
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