Metals

The ores of some metals are:

Iron Haematite, Magnetite, Siderite, Limonite, Iron pyrite.
Aluminium Bauxite, Cryolite, Felspar.
Copper Copper pyrite (Chalcopyrite), Cuprite (Ruby copper), Chalcocite (Copper glance), Malachite, Azurite.
Silver Argentite (Silver glance), Silver copper glance, Horn silver, Ruby silver (Pyrargylite).
Gold Alluvial soil or Alluvial sand or Quartz veins and Reef gold.

1 Marks Question

  1. Mention two major ores of iron.
  2. Two major ores of iron are: haematite, magnetite.
  3. What is an alloy?
  4. An alloy is a homogenous mixture of metals or metals combined with one or more other elements.
  5. Write the atomic number and atomic weight of copper.
  6. Atomic number = 29
    Atomic weight = 63.57
  7. What are the atomic number and atomic weight of silver?
  8. Atomic number = 47
    Atomic weight = 107.88 (108)
  9. Write the name of two ores of copper.
  10. The name of two ores of copper are chalcopyrite, cuprite, etc.
  11. Which metal is obtained form chalcopyrite?
  12. Copper is obtained form chalcopyrite.
  13. Which metal is obtained form hematite?
  14. Iron is obtained form hematite.
  15. What is blister copper?
  16. The molten form of copper that gives out impurities of gases in the form of bubbles and is about 99% pure is called blister copper.
  17. Which metal can be extracted from the ore felspar?
  18. Aluminium can be extracted from the ore felspar.