Metals & Acids

• Reaction of metals with oxygen

  Metal + Oxygen ---> Metal Oxide
• Reaction of metals with water


  Metal + Water ---> Metal Hydroxide + Hydrogen
• Reaction of metals with acids

  Metal + Acid ---> Metal Salt + Hydrogen
• State symbols


  • Solid (s)
  • Liquid (l)
  • Gas (g)
  • Aqueous (aq)
• Test for presence of hydrogen gas


  1. Place a lit splint to a test tube containing gas

  2. If a squeaky pop sound, test tube contains hydrogen gas
• Reactivity series of metals

  • Potassium
  • Sodium
  • Lithium
  • Calcium
  • Magnesium
  • Aluminium
  • Zinc
  • Iron
  • Tin
  • Lead
  • Copper
  • Silver
  • Gold
  • Platinum
• Why gold is used to make jewellery

  Gold is unreactive. It does not react with oxygen so it will stay shiny
• Metal displacement reaction


  A displacement reaction is a chemical reaction where a more reactive element displaces a less reactive element from its compound
• Ore


  An ore is rock made up of a mixture of metal compounds found on the earth's crust
• Magnesium + Oxygen


  Magnesium + Oxygen → Magnesium Oxide