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| Aluminum is a abundant
(20 metal (1) that comes from bauxite (4).
Bauxite is an ore (5), that looks
like clay (6). I contains aluminum (7)
and several (8) other substances (9). Workmen
grind
the bauxite (11), put into pressure (13)tanks
(12), which the other substance form a mass
(14). They use a filter (16) to remove (15)
the mass and a liquid remains (17).
Putting it through several other process (18)
it, finally yields a chemical (19) that is
powdery (20) and white
(21) called alumina (22), a mixture
(23) called aluminum (1).
It contains oxygen (25), which workmen seperate
(26) it using electricity (27). They
finally produce a metal (28) which is light
(29), silvery (32), bright (31) luster (30)
and comes in many forms (33).
Missing: # 3 has many usesAdded IUs: Content errors: 1) In repeating "called" after the appositive "a mixture," the writer miswrites "called aliminum." |
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