Radio waves and microwaves Student activity Play

Radioactive decay Student activity Play

Reaction yields Student activity Play

Reactivity of halogens Student activity Play

Reactivity of halogens Simulation Play

Real gases Student activity Play

Recording a proton NMR spectrum Student activity Play

Recording an infra-red spectrum Whiteboard exercise Play

Recording an infra-red spectrum Student activity Play

Recording proton NMR spectrum Whiteboard exercise Play

Recording proton NMR spectrum of propanone Animation Play

Relationship between the atomic structure and the position of elements in periods Animation Play

Relative abundance of isotopes and mass spectra Student activity Play

Relative atomic mass Whiteboard exercise Play

Relative atomic mass Class activity Play

Relative atomic mass Student activity Play

Relative atomic mass Student activity Play

Relative atomic mass Whiteboard presentation Play

Relative atomic mass Animation Play

Relative atomic mass and relative molecular mass Student activity Play

Relative atomic mass and relative molecular mass Animation Play

Relative atomic mass and relative molecular mass Whiteboard exercise Play

Relative atomic mass of magnesium Whiteboard exercise Play

Relative atomic masses of isotopes Chart Play

Roentgen spectra of elements – characteristic radiation Student activity Play