Lactic acid Animation Play

Le Chatelier's principle for gas reactions Student activity Play

Lewis structures (dot diagrams) for atoms Animation Play

Life beyond the Earth Student activity Play

Life on other planets Slideshow Play

Ligand types Student activity Play

Light Student activity Play

Light phase and dark phase of photosynthesis Student activity Play

Light phase and dark phase of photosynthesis Animation Play

Light phase and dark phase of photosynthesis Whiteboard exercise Play

Limestone Illustration Play

Limiting factor Animation Play

Lipids – the energy source of the cell Student activity Play

Lone electron pairs affect the shape of the molecule (1) Student activity Play

Macromolecular crystals Student activity Play

Magnesium oxide Student activity Play

Main process Animation Play

Making steel Whiteboard exercise Play

Making steel Student activity Play

Mass number Student activity Play

Mean bond enthalpies and interactions between bonds Student activity Play

Mean bond enthalpy Student activity Play

Measuring mass changes in the reaction mixture Animation Play

Metabolism – breakdown and synthesis Student activity Play

Metal alloys Student activity Play