Oxidation and Reduction
- Created by: freddieam
- Created on: 06-04-16 19:02
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- Oxidation and Reduction
- Oxidation is the addition of oxygen to an element or compound
- Reduction is the removal of oxygen from a compound
- Most ore's are oxides of metals
- To extract the metal, the metal oxide must lose oxygen - the metal oxide must be reduced
- The reduction can be done by heating with carbon or electrolysis, depending on the reactivity of the metal
- To extract the metal, the metal oxide must lose oxygen - the metal oxide must be reduced
- Most metals corrode - the corrosion of iron is called rusting
- Corrosion nearly always involves the reaction of the metal with oxygen in the air - this is oxidation
- Using a coating of some sort (oil or paint) can slow down the rate of corrosion
- Metals high in the reactivity series corrode very easily; metal lower down don't
- Which explains why gold can be found uncombined in some places
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