Acid–base reactions in a non-aqueous medium Animation Play

Addition of HCl to propene Animation Play

Addition of hydrogen cyanide Student activity Play

Addition of hydrogen cyanide Whiteboard exercise Play

Additional information contained in chemical equations Student activity Play

Air Student activity Play

Aliphatic amines: properties as bases Student activity Play

Alkanes Whiteboard presentation Play

Alkanes Class activity Play

Allotropic forms of crystals Animation Play

Allotropy Student activity Play

Amides and nitriles Student activity Play

Ammonia Animation Play

Ammonia and nitric acid Class activity Play

Ammonia and nitric acid Whiteboard presentation Play

Ammonium cation Animation Play

Ammonium nitrate Animation Play

Amorphous materials Student activity Play

Amorphous solids Student activity Play

Amorphous solids Whiteboard exercise Play

An experiment Whiteboard exercise Play

An experiment Student activity Play

Angular momentum Whiteboard presentation Play

Angular momentum Class activity Play

Angular momentum of a solid Whiteboard exercise Play