Proportions – sugar in tea Whiteboard exercise Play

Protecting food from spoilage Whiteboard presentation Play

Pure substances and mixtures Student activity Play

Pure substances and mixtures Slideshow Play

Purity test Animation Play

Radiation of heat Student activity Play

Reaction of ammonia with hydrogen chloride Animation Play

Reaction of sodium, magnesium and aluminium with water Animation Play

Reactions between alkali metals and the halogens Student activity Play

Reactions between Period 3 elements and water (1) Student activity Play

Reactions of enantiomers Student activity Play

Reactions of enantiomers with non-chiral and chiral reactants Animation Play

Reactions of sugars Student activity Play

Receptor potential and sensory transduction Student activity Play

Remember another way to express concentration Simulation Play

Ribonucleic acid Animation Play

Ribose and deoxyribose Animation Play

Rotation of the polarisation plane Whiteboard exercise Play

Rotation of the polarisation plane Student activity Play

Saturated solutions Student activity Play

Saturated solutions Student activity Play

Sensory transduction by a taste receptor Animation Play

Separation of mixtures (2) Student activity Play

Simple and giant molecular solids Class activity Play

Simple and giant molecular solids Whiteboard presentation Play