Determining the empirical formula Animation Play

Determining the empirical formula Student activity Play

Determining the molecular formula Student activity Play

Development of atomic theory. Radioactivity Whiteboard presentation Play

Development of atomic theory. Radioactivity Class activity Play

Diffraction of electrons Whiteboard exercise Play

Diffraction of electrons – the Davisson-Germer experiment Student activity Play

Discharging a battery. Accumulators. Whiteboard exercise Play

Discharging a battery. Accumulators. Animation Play

Discharging a battery. Accumulators. Student activity Play

Discovery of electron Animation Play

Discovery of elementary particles Student activity Play

Discovery of proton Animation Play

Dispersion forces in halogens Animation Play

Dissolving ionic compounds in water Student activity Play

Division with remainder Student activity Play

Division with remainder – positive numbers Whiteboard exercise Play

DNA in living organisms Student activity Play

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

Early atomic theories Class activity Play

Early atomic theories Whiteboard presentation Play

Early atomic theories Whiteboard exercise Play

Early atomic theories Student activity Play

Early atomic theories Whiteboard exercise Play

Early models of an atom Animation Play