(a)[5]
Describe the electrolysis of molten sodium chloride. In your response include: a labelled diagram of the apparatus used; the observations at the positive electrode and at the negative electrode.
(b)[2]
Use the kinetic particle model to describe how the particles in solid sodium are arranged and how far apart they are.
(c)[2]
Give two ways in which the physical properties of iron are different from those of sodium.
(d)[1]
Explain how this equation shows that carbon monoxide has undergone oxidation.