Other questions in this quiz

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

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

3. What is the definition of an ore?

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

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

  • The ore must become less dense
  • The ore must be mined and concentrated
  • The ore must have more metals added to it
  • The ore must be put in a catalyst


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