(a(i))[1]
Name one ore from which aluminium is obtained.
(a(ii))[2]
What does the term electrolysis mean?
(b(i))[1]
Name the compound added to aluminium oxide in order to lower the operating temperature.
(b(ii))[1]
Suggest one benefit to the environment of reducing the operating temperature.
(b(iii))[4]
Write the ionic half-equation for the reaction occurring at: the negative electrode (cathode) the positive electrode (anode)
(b(iv))[2]
Explain why the anodes need frequent replacement.
(c(i))[1]
What term is used to describe an oxide that reacts with acids and with alkalis?
(c(ii))[2]
State the salt name and give its formula. name formula
(c(iii))[1]
Name the other substance formed.
(c(iv))[2]
Write the equation for this reaction.
(c(v))[2]
Suggest the names of two other aluminium compounds that break down on heating to form aluminium oxide.