Zinc reacts with aqueous copper(II) ions. $\text{Zn} + \text{Cu}^{2+} \rightarrow \text{Zn}^{2+} + \text{Cu}$ Explain why this reaction shows both oxidation and reduction. In your answer, use the equation and the idea of electron transfer.
Aqueous ammonia is added to aqueous zinc ions. Describe what is seen when a small amount of aqueous ammonia is added and when excess aqueous ammonia is added.
Molten zinc chloride conducts electricity. Predict the substances formed at the anode and at the cathode during electrolysis of molten zinc chloride.
Using structure and bonding, explain why zinc chloride has a high melting point.
State why aluminium is extracted by electrolysis instead of reduction with carbon.
State one property of aluminium that makes it suitable for aircraft construction.
State one benefit of recycling metals such as aluminium and copper.