Combined Science GCSE
Reduction
What Reduction means in Combined Science GCSE, as defined for AQA.
Definitions of Reduction
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Reference: AQA
Extraction is a reduction process in which the metal compound loses oxygen or gains electrons, producing the metal.
At the cathode, positive ions gain electrons, so electrons are written on the left of the arrow.
In this context, the loss of oxygen from the metal oxide when a metal is obtained from its ore.
Involves the loss of oxygen from a substance during a chemical reaction.
Gain of electrons, which can be remembered using the mnemonic OIL RIG.
The removal of oxygen from a metal oxide by carbon, leaving the metal.
Topics that use Reduction
- Extraction of metals and reduction (AQA GCSE)
- Oxidation and reduction in terms of electrons (HT only) (AQA GCSE)
- The process of electrolysis (AQA GCSE)
Related terms
Using Reduction in the exam
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