Aluminum is an abundant metal
with many uses. It comes from Bauxite, an ore that looks like clay. Bauxite
also contains several other substances than aluminum. The other substances
are extracted by workers. The Bauxite is then grinded, put into tanks,
and pressurized. The other substances form a mass which is removed by filters
and leaves behind a liquid. After several other processes, it finally yields
a powdery, white chemical known as alumina. It is a mixture of aluminum
and oxygen which workers seperate by means of electricity. A metal is now
produced. It is light, has a silvery bright luster, and comes in many forms. |