The arrangement of electrons in an atom Student activity Play

The atomic and ionic radii Animation Play

The atomic mass and the diameter of atom Illustration Play

The atomic structure and the properties of materials Animation Play

The atomic structure and the properties of materials Animation Play

The atomic structure and the properties of materials Whiteboard exercise Play

The atomic structure and the properties of materials Student activity Play

The atomic theory today Whiteboard exercise Play

The atomic theory today Student activity Play

The balancing of half-equations Whiteboard exercise Play

The beginnings of life Student activity Play

The Bohr model of the atom Whiteboard exercise Play

The Bohr model of the atom Class activity Play

The Bohr model of the atom Whiteboard presentation Play

The Bohr model of the atom Student activity Play

The chemical synthesis of ethanol Student activity Play

The chemist's counting unit – the mole Slideshow Play

The chloride ion as a ligand Student activity Play

The complex structure of matter Animation Play

The course of the reaction Animation Play

The covalent and ionic bonds Animation Play

The C–X bond Animation Play

The C–X bond (1) Student activity Play

The C–X bond (2) Student activity Play

The discovery of the electron and Thomson's model of the atom Student activity Play