Chemistry GCSE
Half equation
What Half equation means in Chemistry GCSE, as defined for AQA.
Definition of Half equation
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Reference: AQA
Shows electrons gained or lost by one species, for example Mg → Mg²⁺ + 2e⁻ for oxidation or Cl₂ + 2e⁻ → 2Cl⁻ for reduction.
Topics that use Half equation
- Atoms, elements and compounds (AQA GCSE)
Related terms
- Balanced chemical equation
- Balanced equation
- Chemical change
- Chemical symbol
- Decomposition reactions
- Endothermic
- Exothermic
- Fixed composition and atom ratios
Using Half equation in the exam
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