Limitations of Bohr's model of the atom Animation Play

Lone electron pairs affect the shape of the molecule Whiteboard exercise Play

Lone electron pairs affect the shape of the molecule Whiteboard exercise Play

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

Lone electron pairs affect the shape of the molecule (2) Student activity Play

Lorentz force Student activity Play

Macromolecular crystals Student activity Play

Magnesium oxide Animation Play

Mass defect Student activity Play

Mass defect Student activity Play

Mass defect Whiteboard exercise Play

Mass spectrometer Student activity Play

Mass spectrometry of elements Student activity Play

Mass spectrum of neon Animation Play

Maxwell–Boltzmann distribution Animation Play

Maxwell–Boltzmann distribution curves Whiteboard exercise Play

Maxwell–Boltzmann distribution of molecular energies Whiteboard exercise Play

Maxwell–Boltzmann distribution of molecular energies Student activity Play

Mean bond enthalpies and interactions between bonds Student activity Play

Mechanism of nucleophilic addition Student activity Play

Mechanism of the addition reaction Animation Play

Melting and boiling points (2) Student activity Play

Melting and boiling points of silicon Animation Play

Melting and boiling points of sodium, magnesium and aluminium Animation Play

Melting points Animation Play