(a)[3]
Describe how a pure sample of hydrated copper(II) sulfate crystals could be prepared from dilute sulfuric acid and excess copper(II) oxide.
(b(i))[1]
What does the symbol $\rightleftharpoons$ mean?
(b(ii))[1]
How can hydrated copper(II) sulfate be turned into anhydrous copper(II) sulfate?
(c)[2]
Complete the table to find the relative formula mass of anhydrous copper(II) sulfate, $\text{CuSO}_4$. You may use your Periodic Table to help you.
(d)[4]
Complete the table to show the numbers of electrons, protons and neutrons in the sulfur atom and copper ion shown.
(e(i))[1]
What does the term alloy mean?
(e(ii))[1]
Suggest why a copper alloy is chosen for coins rather than pure copper.