(HT only) Define reduction as gain of electrons.

In the subtopic Oxidation and reduction in terms of electrons (HT only), this learning objective focuses on (HT only) Define reduction as gain of electrons. It sits within Reactivity of metals for AQA GCSE Chemistry 8462 Unit 4.4, so the explanation must stay anchored to chemical changes rather than drifting into a general chemistry idea. Approved keywords to use include HT only, reduction, ion. Reduction. means the gain of electrons by a species during a redox process Avoid the mistake of students often confuse reduction with the addition of oxygen instead of the gain of electrons; instead, remember that reduction specifically refers to the gain of electrons, while oxidation is the loss of electrons For exam answers, remember that reduction is defined as the gain of electrons by an ion 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.