Inverse proportion Class activity Play

Investigation of the effect of temperature on the rate of chemical reactions Animation Play

Ionic equations Animation Play

Ionisation enthalpy and electron affinity Student activity Play

Ionisation enthalpy and electron affinity Whiteboard exercise Play

Iron extraction Whiteboard exercise Play

Iron extraction Student activity Play

Is it easy to distinguish between a physical change and a chemical change? Student activity Play

Is the equation unique? Whiteboard exercise Play

Is the equation unique? Student activity Play

Is this system at equilibrium? Whiteboard exercise Play

Is this system at equilibrium? Student activity Play

Isomerisation of cis-but-2-ene Animation Play

John Dalton's atomic theory Animation Play

Kinetic energy of the colliding molecules Animation Play

Le Chatelier's principle Student activity Play

Le Chatelier's principle for gas reactions Student activity Play

Le Chatelier's principle for gas reactions Whiteboard exercise Play

Least useful chemical reactions Student activity Play

Lena's number Whiteboard exercise Play

Lens equation and magnification Animation Play

Lens equation and magnification Student activity Play

Lens equation and magnification Whiteboard exercise Play

Letter symbols in equations, formulas and functions Class activity Play

Letter symbols in equations, formulas and functions Whiteboard presentation Play