Aluminum is an abundant metal
which has many uses. Aluminum comes from bauxite, which is an ore. Bauxite
contains several other substances, as well as aluminum. Workmen extract
these substances from the bauxite by grinding it. Then, the workmen put
the bauxite in a pressure tank. The other substances found in the bauxite
form a mass, which is removed through filters. Now there is only a liquid
that remains. The workmen put this liquid through other processes, until
it yields a powdery, white, chemical. This chemical is called alumina.
Alumina is a mixture that contains aluminum and oxygen, and the workmen
seperate them. using electricity. Finally, a metal is produced, which has
a silvery, bright, luster. Aluminum comes in many forms as well. |