Separating metals from metal oxides

• Oxidation reaction

  Refers to a substance reacting with oxygen
• What does a metal form when oxidised

  Metal oxide
• What is a reduction reaction

  Refers to a substance losing oxygen
• When mined from the ground what form are metals normally found in

  Bonded to other elements most often oxygen.
• 2 ways metals can be extracted from their ores

  Reduction with carbon

  Electrolysis
• Which metals can be reduced with carbon

  Zinc

  Iron

  Copper

  Only metals that are less reactive than carbon
• How can metal ores be reduced using carbon

  React the metal ore with carbon

  Carbon will displace the metal as it is more reactive
• Symbol equation for the reduction of FeO with carbon

  2FeO + C —> 2Fe + CO2
• Why do some metals not require extraction

  Some metals are so unreactive so they exist as pure metals
• Reactivity series (Most to least)

  Potassium

  Sodium

  Lithium

  Calcium

  Magnesium

  Carbon

  Zinc

  Iron

  Carbon