11. J02/3/1.(c) One property of aluminium is that it resists
corrosion because it is covered with a layer of its oxide.
–(i)
Give one use of the metal that depends on this property. [1]
–
–(ii)
Give another use of the metal that depends on a different property.
•Use
•
•property [2]
•
12. N01/3/4. (a) Zinc is made by reducing zinc oxide. In
1695 Homberg obtained zinc from calamine, zinc carbonate. At
present zinc is extracted from the ore, zinc blende.