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Oxidation of aluminum

   Tools: dropper or pipette, cloth

       Chemicals: aluminum, mercuric nitrate or other soluble mercuric salt     

           Procedure: on the aluminum plate coping rtuťnaté salt solution or let it take effect the aluminum sheet metal mercury. After about 4 minutes on baking begin very quickly grow white hair. Setter if the cloth will appear soon (so it can be repeated about four times).         

               Mercury cations are the catalysts which accelerate the oxidation of aluminum oxide by atmospheric oxygen.             

4Al + 3O2 --> 2Al2O3
3cm layer of AL2O3

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