Changes in the first ionisation energy across Period 3 Illustration Play

Changes in the ionisation energy across a period Animation Play

Changes in the ionisation energy down the group Animation Play

Changes of physical state Student activity Play

Changing states Student activity Play

Characteristics of living organisms Student activity Play

Charles's law Student activity Play

Charles's law (1) Whiteboard exercise Play

Charles's law (1) Student activity Play

Charles's law (2) Whiteboard exercise Play

Charles's law (2) Student activity Play

Charles's law – experimental observations Animation Play

Chemical bonds and intermolecular forces Animation Play

Chemical energy Student activity Play

Chemical energy Whiteboard exercise Play

Chemical energy sources Student activity Play

Chemical energy sources Student activity Play

Chemical energy sources Whiteboard exercise Play

Chemical energy – the energy of chemical bonds Whiteboard exercise Play

Chemical energy – the energy of chemical bonds Student activity Play

Chemical equilibrium in a gas phase Whiteboard presentation Play

Chemical equilibrium in a gas phase Class activity Play

Chemical reactions that take place very quickly Slideshow Play

Chemical reduction Animation Play

Chlorination of methane Animation Play