Sources of plane waves Animation Play

Spherical waves Animation Play

Spherical waves Simulation Play

Spherical waves Student activity Play

Standard enthalpy of atomisation Student activity Play

Standard enthalpy of atomisation of metals Animation Play

Standard enthalpy of formation of ammonia Animation Play

Standard entropy change Student activity Play

Stoichiometric coefficients and the relative volumes of gases Student activity Play

Stringed instruments Student activity Play

Symbols and formulae in chemical reactions Animation Play

The amplitude and period of oscillation Student activity Play

The amplitude and period of oscillation Simulation Play

The collision of molecules Animation Play

The colours of the conductor Animation Play

The dark phase is independent of light Student activity Play

The dark phase of photosynthesis Whiteboard exercise Play

The effect of pressure on chemical equilibrium Animation Play

The enthalpy change for the transformation of solid sulphur into gaseous sulphide ions Whiteboard exercise Play

The equilibrium constant expression for a heterogeneous reaction Animation Play

The equilibrium constant expression of the homogeneous reaction Animation Play

The frequency of collisions Animation Play

The frequency of the wave perceived by the observer Animation Play

The growth curve for organisms Illustration Play

The influence of pressure on reaction rate Animation Play