Percentage increases and decreases Whiteboard exercise Play

Permeability and absorption of X-rays Student activity Play

pH range for colour change of an indicator Animation Play

Phase Student activity Play

Phase changes Animation Play

Physical change Student activity Play

Physical change Whiteboard exercise Play

Physical change and chemical change Student activity Play

Physical changes and mass Simulation Play

Physical changes and mass Student activity Play

Predicting the direction of the redox reaction in a voltaic cell Student activity Play

Pressure affects reactions occurring in the gas phase Student activity Play

Probability and spontaneity Animation Play

Rate of change in the exponential function Simulation Play

Rate of change in the function y = ln|x| Whiteboard exercise Play

Rate of change in the natural logarithmic function Simulation Play

Rate of change on the straight line Whiteboard exercise Play

Rate of change on the straight line Student activity Play

Rates of change Whiteboard presentation Play

Rates of change Class activity Play

Ratio of two quantities of different kinds Whiteboard exercise Play

Ratio of two quantities of different kinds Student activity Play

Ratio of two quantities of the same kind Simulation Play

Ratio of two quantities of the same kind Student activity Play

Reaction conditions and enthalpy change Slideshow Play