Iron

• What’s the words equation for iron rusting

  Iron + oxygen + water —> iron(III) oxide ( which is rust)
• What happens to iron if it exposed to water and oxygen

  The iron will rust
• What are the 2 main ways of preventing rusting

  Barrier methods

  Sacrificial methods
• What are the barrier methods

  Painting/coating with plastic

  Oil/ greasing - ideal for moving parts such as bike chains
• What is a sacrificial method

  Galvanising
• What is galvanising

  A coating of zinc on the iron to avoid iron being exposed to rusting