(a)[3]
Which material would be the most suitable for the bicycle frame? Use the information in the table to justify your answer.
(b(i))[1]
State the name of the main ore of aluminium.
(b(ii))[1]
Suggest why aluminium is extracted by electrolysis and not by reduction with carbon.
(b(iii))[2]
Predict the products formed at the positive electrode (anode) and at the negative electrode (cathode) in this electrolysis.
(c)[4]
Describe what happens in these changes in terms of the distance between the particles and the type of movement the particles show.