Metals and their uses

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  • Created by: Busayoxo
  • Created on: 21-12-15 16:13

1. Which of the following is NOT a reason why current methods of extraction are expensive

  • Large amounts of energy are needed
  • There are non renewable
  • There are many stages in the processes
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2. Copper can be extracted from copper-rich ores by heating the ores in a furnace this is also known as?

  • Bioleaching
  • Smelting
  • Phytoming
  • Electrolysis

3. Which of the following is NOT a property of transition metals?

  • Good conductors of electricity
  • Useful as structural materials and for making things that let heat or electricity pass through
  • Good insulators
  • Can be bent or hammered into shape
  • Good conductors of heat

4. Which of the following is NOT a reason why aluminium and titanium are useful metals

  • They are expensive
  • They have low density
  • They are resistant to corrosion

5. What makes iron brittle?

  • Impurites
  • Being too hard
  • Being too soft
  • Being to rigid

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