Reaction between sodium and chlorine Student activity Play

Reaction between sodium and chlorine Whiteboard exercise Play

Reaction of aqua ions with carbonates Student activity Play

Reactions between halogens and metals Student activity Play

Reactions occurring at the electrodes Student activity Play

Recycling of aluminium Slideshow Play

Relative abundance of isotopes and mass spectra Student activity Play

Relative mass and charge Animation Play

Rutherford's atomic model Student activity Play

Rutherford's experiment Animation Play

Rutherford's experiment Whiteboard exercise Play

Rutherford's model of the atom Animation Play

Rutherford’s atomic model Animation Play

Salts of strong acids and weak bases Whiteboard exercise Play

Salts of strong acids and weak bases Student activity Play

Salts of weak acids and weak bases Student activity Play

Selected physical properties of oxides Chart Play

Semiconductors Animation Play

Sensors Animation Play

Size of electric current Animation Play

Size of electric current Whiteboard exercise Play

Size of electric current Student activity Play

Solubility in water Animation Play

Sound encoding Animation Play

Southern blot technique – saving DNA on a nitrocellulose membrane Student activity Play