S5 Chemistry: Chlorides of Period 3

These notes by Hussein Kato of Trinity College Nabbingo cover the chlorides of sodium, magnesium, aluminium, silicon, phosphorus and sulphur. They present preparation methods and chemical equations, including routes to anhydrous chlorides and the formation of aluminium chloride dimers. The material relates changes in ionic and covalent character to structure, polarising power and melting point trends across Period 3. It also describes dissolution and hydrolysis in water, identifying reaction products and the acidity of resulting solutions. The presentation includes scientific inaccuracies that require correction before classroom use.