| Aluminum is an abundant metal
that has many uses. It comes from an ore that resembles clay called bauxite.
Bauxite contains aluminum and several other substances. Workmen extract
these substances from the bauxite before grinding the bauxite and putting
it in pressurized tanks. The other substances form a mass, which is then
removed and put through filters. After the filtering process, a liquid
remains. This liquid is put through several other processes until it finally
yields a chemical. This chemical is a powdery, white substance called alumina.
Alumina is a mixture containing aluminum and oxygen. Workmen separate the
aluminum from the oxygen using electricity. Finally, a light, lustrous,
bright, silvery metal is produced. This metal comes in many forms. |