Fermat's Principle and the law of reflection of light Animation Play

Focal length and the shape of a lens Student activity Play

Force of resistance of a medium (drag) Animation Play

Frequency of free oscillations Animation Play

Growth curves for batch and continuous cultures Student activity Play

How do indicators work? Whiteboard exercise Play

How do indicators work? Student activity Play

How is coherent light generated? Student activity Play

How is coherent light generated? Whiteboard exercise Play

How is light refracted in a glass of water? Animation Play

How metals react with acids Student activity Play

How metals react with water Student activity Play

How to calculate the pH of strong base solutions? Animation Play

How to explain the refraction of light Animation Play

How to measure the pH? Animation Play

Huygens' Principle Student activity Play

Huygens' Principle Animation Play

Hydrolysis of fats Animation Play

Identifying metals by their reaction with water Whiteboard exercise Play

Indicators in everyday life Slideshow Play

Industrial production of enzymes Animation Play

Interrelationship of concentrations of hydrogen ions and hydroxide ion Whiteboard exercise Play

Interrelationship of concentrations of hydrogen ions and hydroxide ions Student activity Play

Ionisation enthalpy Animation Play

Ionisation enthalpy and electron affinity Student activity Play