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

explain qualitatively the differences in behaviour between strong and weak acids including the reaction with a reactive metal and difference in pH values by use of a pH meter, universal indicator or conductivity

explain and use the terms oxidising agent and reducing agent