Explanation of IU's IUs in the Original
Idea Units: Student 012
Student's Original Student'sAnalyzed

      Aluminum is an abundant (2) metal (1) with many uses (3). Aluminum is one (7) of the many (8) substances (9) able to be extracted (10) from the clayish (6) boxite. Workmen are able to remove the aluminum from the boxite by placing (12) it into pressurized (13) tanks. This causes all the other substances to form a mass (14). They remove (15)and (1) filter (16) the mass, until only a liquid remains (17). They put the liquid through several processes (18), to yield a white (21), powdery (20) chemical (19) called alumina (22). The alumina contains both aluminum (24) and oxygen (25), which are seperated (26) electrically (27), by the workmen. They finally use the aluminum to produce a light (29), bright (31), silver (32), lusterous (30)metal (28), which comes in many forms (33).



Missing:
# 4 "comes from bauxite." [Implied in # 10]
# 5 "Bauxite is an ore."
# 11 "grind the bauxite."
# 23 "mixture" [Implied in # 24 & # 25.]
Added IUs:
 
Content errors:
1) "remove and filter"