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