Reaction of sodium, magnesium and aluminium with water Animation Play

Reactions between Group 1 and 2 metals and water Student activity Play

Reactions between Period 3 elements and water Whiteboard exercise Play

Reactions between Period 3 elements and water (1) Student activity Play

Reactions between Period 3 elements and water (2) Student activity Play

Reactions occurring at the electrodes Student activity Play

Reactivity of the alkali metals and their electron configuration Animation Play

Reactivity series Student activity Play

Reagents, reactants and products Student activity Play

Recycling of aluminium Animation Play

Recycling of aluminium Slideshow Play

Recycling of aluminium Whiteboard exercise Play

Recycling of aluminium Student activity Play

Recycling of aluminium Whiteboard exercise Play

Recycling of paper, glass and metal Student activity Play

Redox reactions Animation Play

Relation between enthalpy of solution and enthalpy of hydration Whiteboard exercise Play

Relative abundance of isotopes and mass spectra Student activity Play

Resistance of aluminium to acids Animation 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

Roles of efficient utilization and recycling in environmental protection Slideshow Play

Salts of carboxylic acids Student activity Play

Salts of strong acids and weak bases Student activity Play