Le Chatelier's principle Student activity Play

Lewis structures and electron configurations Whiteboard exercise Play

Lewis theory of acids and bases Student activity Play

Ligand exchange reactions Class activity Play

Ligand exchange reactions Whiteboard presentation Play

Ligand types Student activity Play

Ligand types Glossary Play

Locations of mineral ions in the soil Whiteboard exercise Play

Macro-elements; trace elements and ultra-trace elements Slideshow Play

Macroelements Student activity Play

Macroelements Whiteboard exercise Play

Magnesium chloride Animation Play

Main process Animation Play

Maize Slideshow 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

Meaning of the symbol pH Animation Play

Measuring neurone potential – ions and channels Illustration Play

Measuring neurone potential – ions and channels Student activity Play

Melting points of alkali metals and alkaline-earth metals Animation Play

Melting points of oxides of Period 3 elements Animation Play