|
||||||
|
Aluminum is an abundant (2) metal (1) with many uses (3). It comes from (4) Bauxite, which is a clay like (6) ore (5) that contains many (8) other substances (9), one of which is the Aluminum (7). At plants (1) when workmen extract the substances from Bauxite (10), they first grind (11) the ore, then place it (12) in pressurized (13) tanks where a mass is formed (14). Continuing the process (2), the workers use filters (16) to extract everything (15) except a liquid (17), which is treated (18?) and in the end yeilds (19) a chemical called alumina (22). Alumina is a powdery (20) white (21), it is a mixture (23) of aluminum (24) and oxygen (25). Using electricity (27) the oxygen is removed (26), producing (28) pure aluminum. Pure Aluminum is very light (29), it has luster (30), which is its shinyness (31?), and it is silver (32) in color (3). The comon metal comes in many forms (33) and has many uses (4).
Missing: Added IUs: # 1 "At plants"Content errors: |
||||||