Chemistry 3.1 - Metals

• Metal electrons are delocalised
• What is a metallic bond?

  The attraction between positive nuclei and delocalised electrons
• What property does metals have due to delocalised electrons?

  They can conduct electricity
• metal + oxygen = metal oxide
• reactive metal + water = metal hydroxide + hydrogen
• Acid + metal = salt + hydrogen
• How do you work out how reactive a metal is?

  REDOX sheet
• Reduction is?

  gain of electrons
• How do you remember redox?

  Oil Rig (Oxidation is loss, Reduction is gain)
• Define metal ore?

  A naturally occuring metal compound
• How do you make REDOX equations?

  make the electrons equal then cancel them out
• What are the three extraction methods?

  1. heating
  2. heating with carbon
  3. electrolysis
• Define electrolysis?

  The splitting of a compound with electricity
• More reactive metals have stronger bonds
• Gold is found uncombined
• Silver and Mercury are extracted by heating
• Copper - Zinc are extracted by heating with carbon
• Aluminium - Potassium are extracted by electrolysis