Determination of reaction rate by measuring the volume or pressure of the gas evolved Student activity Play

Determining the enthalpy of solution of sodium hydroxide Animation Play

Determining the relative molecular mass Animation Play

Development of technology and crop yields Slideshow Play

Diffraction Slideshow Play

Diffraction Student activity Play

Diffusion Student activity Play

Diffusion Student activity Play

Diluting concentrated sulphuric(VI) acid with water Animation Play

Dilution of concentrated acids Student activity Play

Discontinuous variation Student activity Play

Discontinuous variation Slideshow Play

Dispersion forces in halogens Animation Play

Dissipation of heat Animation Play

Dissolution of gases in water Whiteboard exercise Play

Dissolution of gases in water Student activity Play

Distinguish between a physical and a chemical change Whiteboard exercise Play

Diurnal changes in the body temperature of the camel Animation Play

Dragsters Animation Play

Dynamic state of chemical equilibrium Student activity Play

Eating or drinking with a membership card Student activity Play

Eating or drinking with a membership card Whiteboard exercise Play

Ecological tolerance Student activity Play

Effect of a change in reactant concentration on the rate of a chemical reaction Animation Play

Effect of concentration on chemical equilibrium Student activity Play