The Periodic Table- GROUP ONE

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  • Created by: bethany
  • Created on: 07-04-13 16:54
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  • The Periodic Table- GROUP ONE
    • moving DOWN the group..
      • the metals become MORE REACTIVE
        • the outer electron is easily lost
          • it is further away from the nucleus
      • the metals have LOWER melting and boiling points
    • they are all ALKALI METALS
      • low densities
        • all have 1 outer electron
          • makes them more reactive and gives them similar properties
      • LITHIUM
      • SODIUM
      • POTASSIUM
      • RUBIDIUM
      • CAESIUM
    • the alkali metals form IONIC COMPOUNDS WITH NON- METALS
      • want to lose their outer electron
        • to form a 1+ ion
      • no way they'd consider sharing
        • covalent bonding= X
      • they form IONIC BONDS
        • these produce white compounds that dissolve in water to form colourless solutions
    • REACTION WITH WATER PRODUCES HYDROGEN GAS
      • vigorous reactions
        • float and move around the surface, fizzing furiously
      • Lithium, Sodium or Potassium
        • vigorous reactions
          • float and move around the surface, fizzing furiously
      • Untitled
      • produce hydrogen
        • potassium gets hot enough to ignite it
          • a lighted splint will indicate hydrogen by making a sqeaky pop as the H2 ignites
      • they form HYDROXIDES that dissolve in water to give ALKALINE SOLUTIONS

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