Does a compound have a constant composition? Student activity Play

Early atomic theories Whiteboard presentation Play

Early atomic theories Whiteboard exercise Play

Early atomic theories Class activity Play

Early atomic theories Student activity Play

Early atomic theories Whiteboard exercise Play

Early models of an atom Animation Play

Effect of concentration on reaction equilibrium Whiteboard exercise Play

Effect of concentration on reaction equilibrium Student activity Play

Effect of sulphur dioxide on living organisms Simulation Play

Effect of sulphur dioxide on people Illustration Play

Effect of sulphur dioxide on plants Illustration Play

Effect of sulphur dioxide on the process of corrosion Illustration Play

Effective collisions Student activity Play

Effects of macro-element deficiencies Simulation Play

Effects of macro-element deficiencies Student activity Play

Electrical charge of metal ions Student activity Play

Electrode charge Animation Play

Electrolysis Student activity Play

Electrolysis of molten salt Animation Play

Electrolytic dissociation (2) Student activity Play

Electron configuration Student activity Play

Electron configuration and periodic trends of transition elements Class activity Play

Electron configuration and periodic trends of transition elements Whiteboard presentation Play

Electron configuration and the periodic table Student activity Play