(a)[2]
Describe what the student sees when zinc is added to aqueous copper(II) nitrate.
(b(i))[1]
Use the experimental results to deduce the reactivity order of these four metals from most reactive to least reactive.
(b(ii))[2]
Explain how these results justify this reactivity order.
(c)[5]
Describe how you would determine the order of reactivity by measuring the temperature change when each metal reacts with dilute hydrochloric acid, including the measurements taken, the variables kept constant and how the order is deduced.