Redox reactions

• Oxidation


  Gain of electrons
• Reduction


  Loss of electrons
• If Electrons are Transferred, It's a Redox Reaction
• Oxidation


  Addition of oxygen (or a reaction with H)
• Reduction


  Removal of oxygen
• Reduction and Oxidation happen at the same time - hence the term "REDOX"
• Displacement Reactions are Redox Reactions
• Displacement reactions


  • A more reactive metal displaces a less reactive metal from a compound
• Displacement reactions


  1. A more reactive metal replaces the less reactive metal in a compound

  2. The more reactive metal is oxidised

  3. The less reactive metal is reduced
• Ionic equations show just the useful bits of reactions
• Ionic equations only show the particles that react and the products they form
• Ionic equations concentrate on the species that are oxidised and reduced
• Ionic equations are hugely important in chemistry