Reactions involving phase changes Animation Play

Reactions of alkali metals Class activity Play

Reactions of alkali metals Whiteboard presentation Play

Reactions of complex ions Whiteboard exercise Play

Reactions of complex ions Student activity Play

Reasons for the high reactivity of alkenes Whiteboard exercise Play

Reasons for the high reactivity of alkenes (2) Student activity Play

Recognising oxidising and reducing agents Student activity Play

Reduction of aldehydes and ketones Whiteboard exercise Play

Reduction of aldehydes and ketones (1) Student activity Play

Reduction of aromatic nitro compounds Animation Play

Relation between enthalpy of solution and enthalpy of hydration Whiteboard exercise Play

Role of cations in plant cells Slideshow Play

Role of macro-elements absorbed as cations Student activity Play

Salts of carboxylic acids Student activity Play

Sample compounds Slideshow Play

Sample food chains Illustration Play

Sample formulae Illustration Play

Saturated and unsaturated compounds Animation Play

Sea water Student activity Play

Sea water game Whiteboard exercise Play

Selected compounds with three or more elements Whiteboard exercise Play

Simple and giant molecular solids Class activity Play

Simple and giant molecular solids Whiteboard presentation Play

Sodium chloride Animation Play