Edexcel IGCSE Chemistry · Spec 2.18-2.20
Rusting & Redox
How rusting happens, how to prevent it, and oxidation and reduction (redox).
Chemistry revision video
Rusting & Redox
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Spec 2.18-2.20
What you need to know
- State the conditions needed for rusting
- Describe ways to prevent rusting
- Define oxidation and reduction
Active recall
Quick check
Answer each question before opening the answer.
What two things are needed for iron to rust?
Oxygen (from air) and water.
Define oxidation and reduction in terms of electrons.
Oxidation is loss of electrons; reduction is gain of electrons (OIL RIG).
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