Density Animation Play

Determination of atomic radii Animation Play

Determination of average atomic mass of boron Animation Play

Determination of the molecular structure of an unknown compound Student activity 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

Development of atomic theory. Radioactivity Whiteboard presentation Play

Development of atomic theory. Radioactivity Class activity Play

Diffraction of X-rays Student activity Play

Diffraction of X-rays Animation Play

Discovery of the atomic nucleus by Ernest Rutherford Animation 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 attempts to classify chemical elements Whiteboard exercise Play

Early attempts to classify chemical elements (1) Student activity Play

Early attempts to classify chemical elements (2) Student activity Play

Eka-aluminium and eka-silicon Chart Play

Eka-aluminium and eka-silicon Whiteboard exercise Play

Electron configuration Animation Play

Electron configuration and the periodic table Whiteboard exercise Play

Electron configuration and the periodic table Student activity Play