Densities of some substances Chart Play

Density of different substances Animation Play

Density of substances Animation Play

Dioxins Student activity Play

Dispersion forces (London forces) Student activity Play

Dispersion forces in halogens Animation Play

Dissolution of solids in water Student activity Play

Dissolution of substances in water Animation Play

Effect of substances dissolved in water Slideshow Play

Electronegativity and the nature of bonds (1) Student activity Play

Electrophiles as Lewis acids Animation Play

Electrophiles, nucleophiles and carbocations Student activity Play

Elements and non-elements – sorting substances Whiteboard exercise Play

Exchange of substances with the external environment Animation Play

Experiment on energy substances of the organism and cell respiration Simulation Play

Explosive substances Slideshow Play

Factors affecting dispersion forces Student activity Play

Flammability of organic substances Animation Play

Flammable substances Slideshow Play

Flow of substances in a plant Slideshow Play

Food – nutrients; stimulants and foreign substances Whiteboard exercise Play

Food – nutrients; stimulants and foreign substances Student activity Play

Foreign substances Slideshow Play

Geometrical isomerism in alkenes Student activity Play

Harmful substances Slideshow Play