Naming the alkanes Student activity Play

Nature of co-ordinate bonding Animation Play

Neutralisation – not only in water solution Student activity Play

Nitrogen content Whiteboard exercise Play

Nitrogen cycle Student activity Play

Nitrogen cycle Slideshow Play

Nitrogen fertilisers Slideshow Play

Nitrogen fertilisers Student activity Play

Nitrogenous excretion Student activity Play

Nitrogenous waste products Slideshow Play

Non-aqueous acid–base reactions Student activity Play

Non-polar molecules Animation Play

Not all collisions are effective Student activity Play

Not all collisions are effective Whiteboard exercise Play

Not all reactions involve collisions Student activity Play

Not all reactions involve collisions Whiteboard exercise Play

Notation and energy diagram Animation Play

Nucleophiles as Lewis bases Animation Play

Nucleophilic substitution Animation Play

Nucleophilic substitution reactions Animation Play

Nucleophilic substitution reactions in haloalkanes Student activity Play

Nucleophilic substitution reactions – SN1 and SN2 mechanisms Student activity Play

Number of molecules Animation Play

Number of moles of ammonia molecules Animation Play

Numbers of molecules and atoms Animation Play