Ionic Bonding

• Describe the structure of ionic bonding (1)

  -giant ionic structure
• Describe and explain the melting point of sodium chloride (3)

  -High melting point

  -Strong electrostatic attraction between positive and negative ions

  -Requires a large amount of energy to overcome (the electrostatic attraction.)
• when can ionic compounds conduct electricity? (2)

  -when they are molten

  -when they are dissolved
• Why can ionic compounds conduct electricity when molten/ dissolved? (2)

  -The ions are free to move around…

  -… and carry charge.
• Describe how sodium oxide is formed (talk about electrons) (4)

  -Sodium atoms lose 1 electrons

  -Oxygen atoms gain 2 electrons

  -Sodium transferred its electrons to oxygen

  -All ions have a full outer shell/formula= Na2O/ ions: Na+ and O2-
• Write the formula of the following compounds (3)

  a)Potassium bromide

  b)Aluminium oxide

  c)Lithium nitride

  a)KBr

  b)Al2O3

  c)Li3N
• Name 3 properties of ionic compound (3)

  Any 3 from:

  -Giant lactic structure

  -High melting/ boiling point

  -Soluble

  -Can conduct electricity when molten/ dissolved

  -Crystalline/ hard