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GCSE Chemistry · key term
The conversion of an ion into a neutral substance at an electrode by gaining or losing electrons.
Used by AQA, Edexcel and OCR
Specification 4.4.3.4 · Paper 1
The conversion of an ion into a substance at an electrode during electrolysis.
Revise: Electrolysis of Aqueous SolutionsThe electrodes therefore have competing ions to discharge. With inert electrodes, such as carbon rods, the electrodes conduct electricity without themselves providing the products. Which ions are discharged depends on the rules for the ions present.
Specification 3.25, 3.26, 3.27 · Paper 1
The conversion of an ion into a neutral product at an electrode by gaining or losing electrons.
Revise: Products of ElectrolysisIf there is no halide ion to discharge, oxygen is formed from water or hydroxide ions. Sulfate ions remain in solution as spectator ions.
The conversion of an ion into a neutral atom or molecule by gaining or losing electrons at an electrode.
Specification C3.4c, C3.4d · Paper 1 (Foundation), Paper 3 (Higher)
The process in which an ion is selected from competing ions and forms a product at an electrode.
The gain or loss of electrons by an ion at an electrode, producing a different substance.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The process in which an ion gains or loses electrons at an electrode and becomes a neutral substance.
Revise: Description of electrolysisThe reaction happens when an ion reaches an electrode and exchanges electrons there. This is called discharge.
The conversion of an ion into an atom or molecule at an electrode.
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