Chemical Bonds

• Chemical Bonds exist as Covalent bonds and Metallic Bonds.
• Metals delocalsie their outer electrons to form Metallic Bonds.
• Metallic bonds are bonds found in Gaint metallic structures.
• Gaint metallic structures:

  • Consist of positive metal ions in a a 'sea of electrons'
• Physical Properties of Gaint Metallic structures:

  • Good conductors of electricity in solid and molten states
  • Good conductors of heat
  • High density, melting points and boiling points
  • Malleable and Ductile
• Non-Metals share electrons to attain the electronic configuration of a noble gas and form Covalent bonds.
• Covalent bonds are bonds found in Covalent molecules.
• Covalent bonds can exist as:

  1. Simple molecualr structures
  2. Gaint molecular structures
• Simple molecualr structures:

  • Consist of simple molecules
  • Weak intermolecular forces of attraction between molecules
  • Strong covalent bonds between atoms in the molecule
• Physical Properties of Simple molecular structures:

  1. Low melting and boiling points
  2. Usually insoluable in water but soluable in organic solvents
  3. Do not conduct elelctricity in any state
• Gaint molecular structures:

  • Consist of a gaint network of covalently-bonded atoms
  • Strong covalent bonds throughout entire structure
• Physical properties of Gaint molecular structure:

  1. Very high melting and boiling points
  2. Do not conduct electricity in any state(except graphite)
  3. Insoluable in water and organic solvents