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Ionic Equations

Edexcel AS-level ChemistryOxidation and ReductionLesson 8 of 14

Any redox reaction is made up of two half-reactions: in one of them electrons are being lost (an oxidation process) and in the other one those electrons are being gained (a reduction process).

These two equations are described as ionic-half-equations

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Key terms in this lesson

oxidation number
A number assigned to an atom showing its degree of oxidation, based on the electrons it would gain or lose if all bonds were ionic.

More in Oxidation and Reduction

All 14 lessons in Oxidation and Reduction · All Edexcel AS-level Chemistry topics