Ionic Bonding

• How are ions formed?

  • When electrons are transferred from one atom to another
  • And has a full outer shell
• Define ionic bonding

  • The electrostatic attraction between positive and negatively charged ions
  • Held together in a giant ionic lattice
• Ionic formula for Ammonium

  
• ionic formula for carbonate

  
• Ionic formula for hydroxide

  
• Ionic formula for nitrate

  
• Ionic formula for sulfate

  
• Behaviour of ionic compounds:Electrical conductivity

  • Conduct when molten or dissolved but not when solid
  • In liquid the ions are free to move
  • In solid they're held together in a fixed position by the strong ionic bonds
• Melting point

  • High melting points
  • The giant ionic lattices are held together by strong electrostatic forces
  • High energy needed to overcome these bonds
• Solubility

  • Ionic compounds dissolve in water
  • Water is polar so pulls the ions away from the lattice and causes it to dissolve