| Aluminum is an abundant metal
that has many uses. It comes from bauxite, an ore that resembles clay.
Bauxite contains aluminum, as well as several other substances. Workmen
grind the bauxite and put it into pressure tanks to extract these other
substances. These substances are filtered to form a mass. After removing
the mass, a liquid remains. This is put through severl other processes
to finally yield a chemical. This chemical is a white, powdery mixture
called alumina. It contains oxygen and aluminum. Workmen use electricity
to produce a metal by separating the aluminum from the oxygen. Thie metal
is light, bright, silvery, lustrous, and comes in many forms. |