Speeds of a boat and a river Animation Play

Spontaneous chemical modifications of nitrogenous bases Slideshow Play

Sridhara's method of finding the roots of a quadratic equation Student activity Play

Sridhara's method of finding the roots of a quadratic equation Whiteboard exercise Play

Standard enthalpies of combustion for selected substances Chart Play

Standard enthalpy change Student activity Play

Standard enthalpy change Whiteboard exercise Play

Standard enthalpy of atomisation Student activity Play

Standard enthalpy of combustion Student activity Play

Standard enthalpy of formation Student activity Play

Standard enthalpy of formation Animation Play

Standard enthalpy of formation for phosphorus trichloride Whiteboard exercise Play

Standard entropy change Student activity Play

Standard entropy values Animation Play

Starch Slideshow Play

State of chemical equilibrium Animation Play

Statements about chemical reactions Whiteboard exercise Play

Statements about least useful chemical reactions Whiteboard exercise Play

Statements about the importance of chemical reactions Whiteboard exercise Play

Statements about types of chemical reactions Whiteboard exercise Play

Static equilibrium and dynamic equilibrium Audio text Play

Statistical problem specification Student activity Play

Stoichiometric coefficients and the relative volumes of gases Student activity Play

Structural and molecular formulae of chemical compounds Animation Play

Structure determination by chemical methods: an example Animation Play