Metals and their uses

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  • Created by: Busayoxo
  • Created on: 21-12-15 14:24

1. What must happen to ores before the metal is extracted and purified?

  • The ore must be mined and concentrated
  • The ore must be put in a catalyst
  • The ore must have more metals added to it
  • The ore must become less dense
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2. Metals that are more reactive than carbon, such as aluminium are extracted by?

  • Reduction by iron
  • Electrolysis
  • Reduction by oxygen
  • Reduction by carbon

3. What is the definition of an ore?

  • An ore is the product of a reaction
  • An ore contains enough metal to make it economic to extract the metal
  • An ore is a mixture of metals
  • An ore is an unreactive metal

4. Metals that are less reactive than carbon can be extracted from their oxides by?

  • Reduction with carbon
  • Electrolysis
  • Catalysts
  • Reduction with oxygen

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