Aluminum is an abundant metal
with many uses. It is contained in a clay-like ore called Bauxite. Bauxite
also contains several other substances that are extracted through grinding.
To do this, workmen put the bauxite in a pressurized tank. The other substances
form a mass which is then removed. They take the remaining substances and
filter them until a liquid is extracted. After several other processes,
a white powdery chemical called alumina is extracted. Alumina is a mixture
containing aluminum and oxygen. These elements are seperated using electricity
which produces a metal. The metal is light with a silvery bright luster
that can come in many forms. |