Names and symbols of elements Animation Play

Nastic movements – photonasty and thermonasty Student activity Play

Nervous and chemical regulation of respiratory movements Student activity Play

Neutralising acid Simulation Play

Non-polar molecules Animation Play

Non-stoichiometric ratio of quantities of reactants Student activity Play

Not all collisions are effective Whiteboard exercise Play

Not all collisions are effective Student activity Play

Not all reactions involve collisions Student activity Play

Observation of the temperature changes of the system during a chemical reaction Animation Play

Other nastic movements – chemonasty and seismonasty Student activity Play

Other physical and chemical properties of carboxylic acids Whiteboard exercise Play

Other physical and chemical properties of carboxylic acids Student activity Play

Other types of energy Student activity Play

Other types of energy Whiteboard exercise Play

Other ways to accelerate chemical reactions Student activity Play

Oxidation Illustration Play

Oxidation states of nitrogen in its chemical compounds Whiteboard exercise Play

Oxidation states of the p-block elements in their commonest chemical compounds Student activity Play

Particle theory and changes in state Student activity Play

Particle theory and changes of state Animation Play

Pasteurization Student activity Play

Percentage changes Student activity Play

Percentage changes Whiteboard exercise Play

Periodic trends in the chemical properties of elements Class activity Play