Lewis dot-and-cross diagrams Student activity Play

Lewis structure of a hydrogen molecule Animation Play

Lewis structures (dot diagrams) for atoms Animation Play

Lewis theory of acids and bases Student activity Play

Ligand exchange reactions Whiteboard presentation Play

Ligand exchange reactions Class activity Play

Ligand types Student activity Play

Ligand types Glossary Play

Light phase and dark phase of photosynthesis Animation Play

Light phase and dark phase of photosynthesis Student activity Play

Limitations of Bohr's atomic model Animation Play

Lipids – the energy source of the cell Student activity Play

Locations of mineral ions in the soil Whiteboard exercise Play

Logarithms in chemistry Student activity Play

Magnesium chloride Animation Play

Main process Animation Play

Manufacture of hydrogen Whiteboard exercise Play

Markovnikov’s rule Student activity Play

Mass percentage of hydrogen in methane Whiteboard exercise Play

Mass spectrometer Animation Play

Mass spectrometer Student activity Play

Mass spectrometry of elements Student activity Play

Mass spectrometry. Part II Whiteboard presentation Play

Mass spectrometry. Part II Class activity Play

Mass spectrum of neon Animation Play