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C4 (Bulk properties of materials (Melting point (At this temperature the…

- - - - Tensile strength
        
        How much a material can resist pulling force
      - Compressive strength
        
        How much a material can resist squashing force
- - - - 4Fe + 3O2 → 2Fe2O3.
    - - If you put an iron nail in a boiling tube with just water, it won't rust.
      - If you put an iron nail in a boiling tube with just air. it wont corrode
      - If you put an iron nail a boiling tube with air and water it will corrode.
  - - - e.g. coating with plastic, Electroplating and Oiling/greasing
    - - E.g. Attaching a more reactive metal to the object. Such as Magnesium
- - - - This makes Diamond extremely hard and rigid causing it to have a very high melting point
      - However because of its rigid structure and no free electrons it cannot conduct electricity
  - - - Graphene is incredibly thin and light. it is also transparent and is even better at conducting thermal energy and electricity than graphite
    - - This means Graphite can conduct electricity as it has a free electron. It also has a very high melting point.
      - Graphite is built in small layer called graphene held together by weak inter molecular forces.