A balanced diet Slideshow Play

A carpet problem Animation Play

A more difficult problem Whiteboard exercise Play

A more difficult problem Student activity Play

A more difficult problem (1) Student activity Play

A more difficult problem (2) Student activity Play

Absorption of light by transition metal ions Animation Play

Absorption spectra Student activity Play

Absorption spectrum of Ti(III) ions Illustration Play

Active site Animation Play

Adding and subtracting fractions – a practical problem Whiteboard exercise Play

Adding and subtracting fractions – a practical problem Whiteboard exercise Play

Adding fractions – a practical problem Whiteboard exercise Play

Adding fractions – a practical problem Whiteboard exercise Play

Addition of elements to alkenes Student activity Play

Advanced problem Whiteboard exercise Play

Aesthetic organic molecules Animation Play

Aids as a social problem Slideshow Play

Alarm clock problem Animation Play

Amides and nitriles Student activity Play

Ammine complexes with non-octahedral geometry Animation Play

An area problem Student activity Play

An area problem Whiteboard exercise Play

An area problem – visualisation Animation Play

Analysis of the energy profile for chemical reactions Whiteboard exercise Play