Reactions with water Student activity Play

Reactivity of Group 1 and 2 metals Animation Play

Reactivity series Student activity Play

Reagents, reactants and products Student activity Play

Recording a proton NMR spectrum Student activity Play

Recording proton NMR spectrum of propanone Animation Play

Redox reactions Animation Play

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

Relationship between the group number and the number of valence electrons Animation Play

Relative abundance of isotopes and mass spectra Student activity Play

Relative atomic mass Whiteboard presentation Play

Relative atomic mass Class activity Play

Relative atomic mass and relative molecular mass Animation Play

Relative atomic mass and relative molecular mass Student activity 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

Reversible and irreversible reactions Student activity Play

Rocks originating from magma Animation Play

Role of cations in plant cells Slideshow Play

Role of macro-elements absorbed as cations Student activity Play

Salts of s-block elements occurring in nature Slideshow Play

Seawater Slideshow Play

Sodium, magnesium and aluminium oxides Animation Play

Soil Student activity Play