Recycling of aluminium Student activity Play

Recycling of paper, glass and metal Student activity 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 and relative molecular mass Student activity Play

Relative atomic mass and relative molecular mass Animation Play

Resistance of aluminium to acids Animation Play

Resting and action potentials of a neurone Student activity Play

Rocks originating from magma Animation Play

Roles of efficient utilization and recycling in environmental protection Slideshow Play

s-block elements Animation Play

Salts in the human organism Illustration Play

Salts of s-block elements occurring in nature Slideshow Play

Salts of weak acids and strong bases Student activity Play

Salts of weak acids and strong bases Whiteboard exercise Play

Satellite telephones Student activity Play

Shampoo Animation Play

Silicon and aluminium oxides Animation Play

Simplified notation of the configuration of an element Animation Play

Skin irritation Animation Play

Sodium Slideshow Play

Sodium carbonate as a standard Animation Play

Sodium cation Student activity Play

Sodium cation Animation Play