Roentgen spectra of elements – characteristic radiation Whiteboard exercise Play

Roentgen's experiment Animation Play

Rutherford's atomic model Student activity Play

Rutherford's experiment Animation Play

Rutherford's experiment Whiteboard exercise Play

s-block elements Animation Play

Salts of strong acids and weak bases Student activity Play

Scanning electron microscope Slideshow Play

Scanning electron microscope Slideshow Play

Semiconductor Animation Play

Semiconductor diode Student activity Play

Semiconductor diode Animation Play

Semiconductor diode Whiteboard exercise Play

Semiconductors Animation Play

Semiconductors Whiteboard exercise Play

Semiconductors Student activity Play

Shapes of organic molecules Student activity Play

Sigma (σ) bond Whiteboard exercise Play

Sigma (σ) bond Student activity Play

Sigma bonds in fluorine molecule Animation Play

Sigma bonds in hydrogen fluoride molecule Animation Play

Simplified notation of the configuration of an element Animation Play

Small numbers Student activity Play

Sodium cation Animation Play

Sodium cation Student activity Play