2C - Bonding and structure

     1)    This question is about copper:

            a)    Describe metallic bonding.  You may wish to use a diagram. [2]


            b)    How does a metal conduct electricity? [1]


     2)    This question is about the salt sodium chloride, NaCl:

            a)    Discuss the conductivity of NaCl compounds.  Explain your answer.  [5]


            b)    With the aid of a diagram explain the solubility of sodium chloride in water.  [4]


     3)    Complete the following table for the following substances:  [20]


    NaCl SiO2 Br2 NH3
  Melting point        
  Electrical conductivity        
  Solubility in water        
  Solubility in non polar solvent