Chemical reactions in practice Student activity Play

Classification of elements Animation Play

Comparing data by scaling Student activity Play

Comparing sets of data using a frequency polygon Student activity Play

Configuration of the cobalt ion Whiteboard exercise Play

Constructing the simplest mathematical model Whiteboard exercise Play

Continuous and line spectra Animation Play

Cosmology Animation Play

Crystal lattice of covalent compounds Student activity Play

Crystal lattice of NaCl Simulation Play

Curved space Student activity Play

Dalton's atomic theory Animation Play

Democritus' and Dalton's atomic theories Student activity Play

Democritus's atomic theory Animation Play

Density Animation Play

Determination of atomic radii Animation Play

Determination of average atomic mass of boron Animation Play

Determination of formulae of compounds Whiteboard exercise Play

Determining the atomic radius Animation Play

Determining the composition of atomic nuclei Student activity Play

Determining the composition of atomic nuclei Whiteboard exercise 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