Chemistry - Redox Reactions - Introduction to oxidation and reduction - Oxidized or Reduced?

Sort 12 half-reactions or descriptions into OXIDATION or REDUCTION. Oxidation: Fe → Fe²⁺ + 2e⁻, Na → Na⁺ + e⁻, Zn → Zn²⁺ + 2e⁻, 'Iron rusting', 'Losing electrons', 'Increase in oxidation state'. Reduction: Cu²⁺ + 2e⁻ → Cu, O₂ + 4e⁻ → 2O²⁻, Ag⁺ + e⁻ → Ag, 'Gaining electrons', 'Extracting iron from or