C2 - Ionic bonding + compounds

• What is ionic bonding?

  Transfer of electrons from one atom to another to form oppositely charged ions
• What are properties of ionic compounds?

  Can dissolve in water

  
  

  Cannot conduct electricity when solid

  • Ions vibrate, they cannot move
  • Held by strong electrostatic forces of attraction

  Very high melting and boiling points

  • Strong electrostatic forces of attraction between ions = a lot of energy required to break these forces
• What is the structure of a giant ionic lattice?

  • Positive ions surrounded by negative ions
  • Very strong electrostatic forces of attraction between positive and negative ions, which hold them in place
• Why can ionic compounds conduct electricity when molten/dissolved in water?

  The ions can move, and carry charge