Copper is a metal. Explain why copper is able to conduct electricity.
Describe a method for identifying copper(II) ions. reagent result
Aqueous copper(II) sulfate is electrolysed with graphite electrodes. Describe the changes seen during this electrolysis: • at the positive electrode • at the negative electrode • in the electrolyte.
Graphite conducts electricity. Give one more reason why graphite electrodes are chosen for electrolysis.
Aqueous copper(II) sulfate reacts with magnesium. $\text{CuSO}_4 + \text{Mg} \rightarrow \text{Cu} + \text{MgSO}_4$ Write the ionic equation, including state symbols, for this reaction.
A 2.25 g sample of a copper oxide contains 0.250 g of oxygen. Deduce the empirical formula of this copper oxide.
Several copper alloys are in common use. What is meant by the term alloy?