Oxidation is any chemical reaction that involves the moving of electrons and the gain of oxygen.

The formula of rusting is 4Fe + 3O2 → 2Fe2O3xH2O → Fe2O3.s H2O.

It has always struck me to see the death of objects that have been used for may purposes, for several years. Usually they all end up losing their original colors and turning brownish and fierce. 

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