Respiration and photosynthesis Student activity Play

Respiratory surfaces Whiteboard presentation Play

Respiratory surfaces Class activity Play

Results of the burning of waste Whiteboard exercise Play

Reversible and irreversible reactions Student activity Play

Reversible reactions Animation Play

Rocks originating from magma Animation Play

Saturated and unsaturated hydrocarbons Illustration Play

Sea water Student activity Play

Secondary treatment Animation Play

Shapes of organic molecules Student activity Play

Single carbon–carbon bond Animation Play

Smoking Whiteboard presentation Play

Solid-vapour equilibrium Student activity Play

Solubility Student activity Play

Solubility of sugar at different temperatures Animation Play

Solutions Student activity Play

Some properties of sedimentary rocks Animation Play

Sources of atmospheric sulphur dioxide Slideshow Play

sp3 Hybridisation Student activity Play

Stainless steel Slideshow Play

Standard enthalpies of combustion for selected substances Chart Play

Standard enthalpies of formation for elements Chart Play

Standard enthalpy change Student activity Play

Standard enthalpy change for hydrogenation of ethene Animation Play