Reactions with water Student activity Play

Reactivity series Student activity Play

Reagents, reactants and products Student activity Play

Recycling of aluminium Animation Play

Recycling of aluminium Whiteboard exercise Play

Recycling of aluminium Slideshow Play

Recycling of aluminium Whiteboard exercise Play

Recycling of aluminium Student activity Play

Recycling of paper, glass and metal Student activity Play

Relative abundance of isotopes and mass spectra Student activity Play

Resistance of aluminium to acids Animation Play

Rocks originating from magma Animation Play

Roles of efficient utilization and recycling in environmental protection Slideshow Play

Salt hydrolysis Student activity Play

Salts of carboxylic acids Student activity Play

Salts of weak acids and strong bases Student activity Play

Salts of weak acids and strong bases Whiteboard exercise Play

Salts of weak acids and weak bases Animation Play

Salts of weak acids and weak bases Student activity Play

Satellite telephones Student activity Play

Silicon and aluminium oxides Animation Play

Skin irritation Animation Play

Sodium cation Whiteboard exercise Play

Sodium cation Student activity Play

Sodium hydroxide Animation Play