e.g. give, verbally and in writing, the name for NaCl(s) (sodium chloride), CO2(g)
(carbon dioxide), MgO(s) (magnesium oxide), NH3(g) (nitrogen trihydride or ammonia), CH4(g)
(carbon tetrahydride or methane), FeCl2(s) (iron(II) chloride), FeCl3(s) (iron(III) chloride