S3 Chemistry: Chlorine and Its Compounds

These notes from Trinity College Nabbingo explain the laboratory preparation of chlorine using potassium manganate(VII) and manganese(IV) oxide. They describe its physical properties and illustrate its oxidising action through reactions with metals, non-metals, water, alkalis and salt solutions. Chemical equations accompany explanations of observations, chlorine water and bleaching action. The resource also outlines industrial and water-treatment uses of chlorine and includes an exercise on preparing anhydrous iron(III) chloride. Hydrogen chloride, hydrochloric acid and chlorides are listed as topics for a subsequent video rather than developed here.