Ionic compounds

• Ionic compounds

  • Have high melting and boiling points to break the strong bonds, therefore requires large amounts of energy
• Forming ions

  • Ions form when atoms gain or lose electrons to obtain a full outer shell
  • Metal atoms-lose electrons=full shell
  • Non metals-gain electrons=full shell
• Ionic bonding

  • Forms between two atoms when an electron is transferred from one atom to the other
  • = positive-negative ion pair
• Properties of ionic compounds

  • Can conduct electricity when dissolved/melted in water because the ions are free to move and so charge can flow
  • Not when solid as ions are not free to move