Writing Chemical Formulae

Give the names of the elements present in the following compounds.
(a) Quick lime
(b) Hydrogen bromide
(c) Baking powder
(d) Potassium sulphate.

Write the chemical formulae of the following:
(a) Magnesium chloride
(b) Calcium oxide
(c) Copper nitrate
(d) Aluminium chloride
(e) Calcium carbonate.

What is meant by the term chemical formula?

Write down the names of compounds represented by the following formulae:
(i) $\mathrm{A}{\mathrm{l}}_2{\left(\mathrm{S}{\mathrm{O}}_4\right)}_3$
(ii) $\mathrm{C}\mathrm{a}\mathrm{C}{\mathrm{l}}_2$
(iii) ${\mathrm{K}}_2\mathrm{S}{\mathrm{O}}_4$
(iv) $\mathrm{K}\mathrm{N}{\mathrm{O}}_3$
(v) $\mathrm{C}\mathrm{a}\mathrm{C}{\mathrm{O}}_3$