A crown of gold mixed with silver Animation Play

A family of transition metals Animation Play

Acids and alkalis Class activity Play

Addition of hydrogen bromide to ethene Whiteboard exercise Play

Alloys of gold Animation Play

Alloys of precious metals Slideshow Play

Alloys of tin and precious metals Whiteboard exercise Play

Alloys of tin and precious metals Student activity Play

Aluminium – lead – silver Whiteboard exercise Play

Application of bromine Slideshow Play

Application of transition elements and their compounds Slideshow Play

Applications of halogens and their compounds Slideshow Play

Archimedes' Experiment Student activity Play

Arrangement of chemical elements in the periodic table Student activity Play

Atomic number Student activity Play

Atomic number Whiteboard exercise Play

Atoms Student activity Play

Atoms and elements Student activity Play

Avogadro's number Student activity Play

Behaviour of halide ions in the presence of silver nitrate(V) Animation Play

Born-Haber cycle Student activity Play

Bromide-bromate reaction: a kinetic study Student activity Play

Bromide–bromate reaction: a kinetic study Whiteboard exercise Play

Bromide–bromate reaction: a kinetic study Whiteboard exercise Play

Calculating the isotopic composition of an element Student activity Play