A constant source of voltage Student activity Play

Ability to react with metals Animation Play

Absorption of light by transition metal ions Animation Play

Abundance of the elements in the crust and in the whole Earth Animation Play

Acid dissociation constant and pH (1) Student activity Play

Acid dissociation constant for ethanoic acid Animation Play

Acid dissociation constant for lactic acid Animation Play

Acid dissociation constant Ka Student activity Play

Acids (2) Student activity Play

Acids and alkalis Class activity Play

Acids and alkalis Whiteboard presentation Play

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

Across the periodic table Student activity Play

Alkalinity of hydroxides Animation Play

All salts are electrolytes Animation Play

Alloys Whiteboard presentation Play

Alloys Class activity Play

Aluminium Class activity Play

Aluminium Slideshow Play

Aluminium Whiteboard presentation Play

Aluminium alloys Simulation Play

Aluminium alloys Student activity Play

Aluminium chloride Animation Play

Aluminium ores Student activity Play

Aluminium ores Whiteboard exercise Play