Corrosion

Corrosion

 

Corrosion – when metals react with water and oxygen. The metal ions lose electrons to form ions.

Rusting – the corrosion of iron metal to form a red-brown compound (hydrated iron (III) oxide)

Covering with Protective Coat Preventing Oxidation of Metal
Painting Galvanising – zinc atoms react before the iron
Greasing of metal parts Sacrificial protection – a more reactive metal reacts before the metal that it is protecting
Oiling of bike chains
Tin Plating – In cans Carthodic protection – an electric power source pushes electrons into the metal to prevent the loss of electrons
Plastic covering on electric wires
Galvanising – zinc coating for galvanised steel
Chromium plating of car parts