Question detail

For Oxidation and reduction in terms of electrons (HT only), which acid-base focus answer best supports this Unit 4.4 objective: (HT only) Identify the species reduced in a redox reaction?

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

MCQ

Type

practice

Style

Topic

Reactivity of metals

Question

  1. A. Oxidation involves losing electrons and reduction involves gaining electrons. - correct acid-base focus for HT only
  2. B. Wrong acid-base focus: confuses HT only with a nearby Unit 4.4 chemical change idea
  3. C. Wrong particle check: uses the wrong ion, electrode, acid-base term, or product for Oxidation and reduction in terms of electrons (HT only)
  4. D. Wrong reaction link: does not support (HT only) Identify the species reduced in a redox reaction

Answer

The correct option is Oxidation involves losing electrons and reduction involves gaining electrons. - correct acid-base focus for HT only.

Explanation

The correct option is Oxidation involves losing electrons and reduction involves gaining electrons. - correct acid-base focus for HT only. Oxidation involves losing electrons and reduction involves gaining electrons. - correct acid-base focus for HT only is correct because it directly supports the approved learning objective to (HT only) Identify the species reduced in a redox reaction. This acid-base focus variant asks students to separate HT only from similar Unit 4.4 chemical-change ideas. The reasoning belongs to Oxidation and reduction in terms of electrons (HT only) within Reactivity of metals, 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 HT only 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

Identifying Reduced Species

Students often confuse the species that is reduced with the species that is oxidised in a redox reaction.

To fix this, remember that reduction involves the gain of electrons. Identify the species that gains electrons during the reaction to determine which is reduced.

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understanding MCQ 3: reduced in a redox reaction. | Reactivity of… | ExamCompanion