|
||||||
|
A type of metal (1) called aluminum is made through many processes (1). Aluminum is an abundant (2) source of metal and is used in various forms (3?). Aluminum is processed from bauxite (4) which is an ore (5). Bauxite has the features of clay (6) and contains many (8) other substances (9). The first step in the production is the removal of the other substances (10?). Workmen grind (11) the bauxite and put (12) it in pressurized (13) tanks. Those other substances form a mass (14), removal (15) of the mass is done with filters (16). A liquid remains (17) in the tanks (2) and is put through many other processes (18) where it yields a chemical (19), a powdery (20)-white (21) chemical; alumina (22). Alumina contains aluminum (24) and oxygen (25). Electricity is then used (27) to separate aluminum from the oxygen (26). FInally a metal is formed (28), lightweight (29) and a bright (31) luster (30). Aluminum has been produced (3) and comes in many forms (33).
Missing: # 7 "contains aluminum" [Implied]Added IUs: # 1 "is made through many processes"Content errors: |
||||||