Covalent Bonds

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  • Created by: Manishah
  • Created on: 17-03-13 13:16
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  • COVALENT BONDS
    • Sharing Electrons
      • Only outer shell
        • Full
          • Electronic Structure of Noble Gas
    • One covalent bond
      • Extra Shared electron for each atom
      • Shared pair of electrons
    • Simple Molecular Substances
      • Very strong CB
        • Form small molecules of several atoms
          • Feeble intermolecular forces
            • Melting/ Boiling point- very low
              • Molecules parted
            • Molecules parted
      • Gases or Liquids at room temperature
      • Don't conduct electricity
        • No ions
          • No electric charge
            • Don't conduct electricity
              • No ions
                • No electric charge
                • Giant Covalent Structure
                  • Macromolecules
                    • Bonded to each other by strong Covalent bonds
                      • Strong forces of attraction
                        • Very high melting/ boiling point
                  • DIamond
                    • Each carbon atom- 4 covalent bonds
                      • In a very rigid gaint covalent structure
                        • Hardest natural Substance
                          • Used for Drill tips
                  • Silicon Dioxide
                    • Silica
                    • Sand is made of
                      • Each grain- one giant structure of silicon and oxygen
                  • Graphite
                    • Each carbon atom only forms 3 covalent structure
                      • Creates layers
                        • Free to slide over each other
                    • Soft and Slippery
                      • Free to slide over each other
                    • Weak Intermolecular Forces
                      • Easily rubbed off
                        • Used in pencil
                    • Good conductor of heat & electricity
                      • Each carbon atom has one delocalised electron
          • Giant Covalent Structure
            • Macromolecules
              • Bonded to each other by strong Covalent bonds
                • Strong forces of attraction
                  • Very high melting/ boiling point
            • DIamond
              • Each carbon atom- 4 covalent bonds
                • In a very rigid gaint covalent structure
                  • Hardest natural Substance
                    • Used for Drill tips
            • Silicon Dioxide
              • Silica
              • Sand is made of
                • Each grain- one giant structure of silicon and oxygen
            • Graphite
              • Each carbon atom only forms 3 covalent structure
                • Creates layers
                • Soft and Slippery
                  • Weak Intermolecular Forces
                    • Easily rubbed off
                      • Used in pencil
                  • Good conductor of heat & electricity
                    • Each carbon atom has one delocalised electron

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