Chemistry A-Level
Reduction
What Reduction means in Chemistry A-Level, as defined for Pearson Edexcel.
Definitions of Reduction
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
The gain of electrons by a substance, resulting in a decrease in its oxidation number.
The gain of electrons by a substance, or a decrease in oxidation number.
The gain of electrons, resulting in a decrease in oxidation number.
Topics that use Reduction
- Topic 1: Atomic Structure and the Periodic Table (Pearson Edexcel A-Level)
- Topic 2: Bonding and Structure (Pearson Edexcel A-Level)
- Topic 3: Redox I (Pearson Edexcel A-Level)
Related terms
Using Reduction in the exam
Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.
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