Discovery of elementary particles Student activity Play

Discovery of radioactivity Animation Play

Dissolution Animation Play

Dissolution of solids in water Student activity Play

Dissolving ionic compounds in water Student activity Play

Dissolving ionic compounds in water Whiteboard exercise Play

Does a chemical compound have a constant composition? Whiteboard exercise Play

Does a chemical compound have a constant composition? Student activity Play

Does a compound have a constant composition? Simulation Play

Does a compound have a constant composition? Student activity Play

Dropped pins Animation Play

Early atomic theories Student activity Play

Early atomic theories Whiteboard exercise Play

Effect of concentration on reaction equilibrium Student activity Play

Effect of temperature on free energy change Student activity Play

Effect of ΔH° and ΔS° on free energy change Student activity Play

Effective collisions Student activity Play

Einstein's first postulate Whiteboard exercise Play

Einstein's postulates Student activity Play

Einstein's postulates Whiteboard exercise Play

Electrolysis Student activity Play

Electrolysis of molten salt Animation Play

Electrolytic dissociation (2) Student activity Play

Electronegativity Animation Play

Electrophilic substitution Class activity Play