18 ms·

Zinc doesn't rust though. ED: Read the correction below.

• unfamiliar 12y ago
  That is almost incorrect. Zinc is used as a plating because it corrodes preferentially to steel, and in doing so it removes electrons needed for oxidation and thus prevents the steel from rusting. This is why you can stop a ship hull rusting by simply bolting a block of zinc to it.
  • marcosscriven 12y ago
    I read ages ago that the Sydney Opera House uses sea water for air conditioning, and has a sacrificial zinc anode.