Bonding- Structure and Properties

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  • Created by: emmie_ems
  • Created on: 10-12-15 15:16
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  • Bonding Structure and Properties
    • Covalent bonding is a shared PAIR of electrons
      • Simple Molecular e.g. Water
        • Do not conduct electricity
        • Low MPT + BPT
        • Doesn't dissolve in water
        • Weak intermolecular forces
        • No free electrons
      • Giant Covalent
        • Graphite
          • Soft and Slippery
          • Doesn't Dissolve in water
          • High MPT
          • Delocalised electrons between layers
          • Conducts electricity
          • 2-D layer structure with WEAK intermolecular forces
        • Diamond
          • High MPT
          • Hard
          • Does NOT conduct electricity
          • 3-D great structure
    • Metallic bonds have attractions between metal CATIONS+ sea of delocalised outer electrons
      • Doesn't dissolve in water
      • Layers can slide over each other
      • Malleable + ductile
        • Strong attractive forces between metal cations and 'sea of electrons'
      • High MPT
      • Conduct electricity
        • Free delocalised electrons that carry the current
    • Ionic bonding is the attraction between positive + negative IONS
      • Giant Ionic e.g. NaCl
        • Soluble in water
        • High MPT
        • Conducts electricity when liquid

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