Name the following compounds. Also write the symbols/formulae of the ions present in them:
(a) CuSO4 (b) (NH4)2SO4
(c) Na2O (d) Na2CO3
(e) CaCl2
(a) Copper sulphate; Cu2+ and
(b) Ammonium sulphate;
(c) Sodium oxide; Na+ and O2-
(d) Sodium carbonate; Na+ and
(e) calcium chloride; Ca2+ and Cl-