AQA GCSE Design and Technology · 8552
Paper 1
Revise: Surface treatments and finishesIron and steel rust when exposed to water and oxygen. This involves oxidation: reaction with oxygen to form oxides. Finishes can inhibit these reactions by separating the metal from water and oxygen.
- Revise: Applying surface treatments
A chemical reaction in which a substance combines with oxygen; metal oxidation can produce a metal oxide.