Alloys of tin and precious metals Student activity Play

Alloys of tin and precious metals Whiteboard exercise Play

Aluminium – lead – silver Whiteboard exercise Play

Ammonia – a weak base Animation Play

Ammonium cation Animation Play

Ammonium nitrate Animation Play

Amphoteric metal hydroxides Animation Play

Applications of standard reduction potentials Student activity Play

Applications of standard reduction potentials Whiteboard exercise Play

Aqua regia Animation Play

Archimedes' Experiment Student activity Play

Arrangement of chemical elements in the periodic table Student activity Play

Atomic number Whiteboard exercise Play

Atomic number Student activity Play

Atoms Student activity Play

Atoms and elements Student activity Play

Autocatalysis Student activity Play

Autocatalysis Animation Play

Autoionisation of water Whiteboard exercise Play

Autoionisation of water Student activity Play

Avogadro's number Student activity Play

Balancing equations for redox reactions in acidic solution using half-equations Animation Play

Balancing equations for redox reactions in acidic solution using half-equations Student activity Play

Balancing equations for redox reactions in alkaline solution using half-equations Student activity Play

Base dissociation constant Kb (1) Student activity Play