The structure of the atom Whiteboard presentation Play

The structure of the periodic table Student activity Play

The structure of the periodic table – blocks Student activity Play

The structure of the periodic table – groups Whiteboard exercise Play

The structure of the periodic table – groups Whiteboard exercise Play

The structure of the periodic table – groups (1) Student activity Play

The structure of the periodic table – groups (2) Student activity Play

The structure of the periodic table – periods Student activity Play

The structure of the water molecule Student activity Play

The structure of the water molecule Animation Play

The successive steps in balancing redox half-equations Whiteboard exercise Play

The sum of current in a node Animation Play

The Sun – a thermonuclear reactor Student activity Play

The Sun – a thermonuclear reactor Animation Play

The Thomson model of atom Whiteboard exercise Play

The total energy of an electron in an orbit Animation Play

The unusual properties of beryllium Animation Play

The unusual properties of beryllium Student activity Play

Thomson's experiment Animation Play

Total current Animation Play

Total energy Student activity Play

Transformation of an atom into an ion Student activity Play

Transformation of atoms into ions Whiteboard exercise Play

Transformation of atoms into ions Student activity Play

Transistor Student activity Play