Unformatted text preview: oxygen. Workmen separate the aluminum from the oxygen. They use electricity. They finally produce a metal. The metal is light. It has a luster. The luster is bright. The luster is silvery. This metal comes in many forms. Aluminum is a metal, which is abundant and has many uses. It comes from bauxite. Bauxite is an ore and looks like clay, containing aluminum and several other substances. Workmen grind the bauxite and extract these substances. They put the substances in tanks and exert pressure, which form a mass. They use filters to remove the mass, and remain the liquid. Through several other processes, it finally yields a white powdery mixture: alumna and oxygen. Workmen use electricity to separate the aluminum from the oxygen and finally produce a light metal, which comes in many forms and has a bright silver luster....
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This note was uploaded on 01/16/2011 for the course GS 311 taught by Professor Staff during the Fall '07 term at Duke.
- Fall '07