describe, and write equations for, the reactions, if any, of the oxides Na₂O, MgO, Al₂O₃, SiO₂, P₄O₁₀, SO₂ and SO₃ with water including the likely pHs of the solutions obtained

describe and interpret, in terms of changes in oxidation number, the reaction of chlorine with cold and with hot aqueous sodium hydroxide and recognise these as disproportionation reactions