ChemistryYears 12–13Redox
Redox chemistry
Understand oxidation states, redox reactions, half-equations and electrochemical cells
What you'll learn
- 1
Redox is short for reduction and oxidation. Think of a rusty bike — the iron is being 'eaten' by oxygen in the air!
- 2
What happens to the iron when it rusts?
- 3
Drag the electrons (⚡) from the iron atom to the oxygen atom to show rusting.
- 4
Let's work out the redox in this reaction: Zn + Cu²⁺ → Zn²⁺ + Cu
- 5
In the reaction Zn + Cu²⁺ → Zn²⁺ + Cu, which is oxidised?
- 6
Is this reaction a redox reaction? Mg + 2HCl → MgCl₂ + H₂
- 7
What is the name for a substance that GAINS electrons?
Practise Redox chemistry with Whizlo
Free AI-tutored lessons, unlimited practice questions, and progress tracking for ages 16–18. Aligned to the UK National Curriculum.