Reactions between halogens and metals Student activity Play

Reactions to heat and cold Whiteboard exercise Play

Reactions to heat and cold Student activity Play

Recording an infra-red spectrum Student activity Play

Reducing friction Student activity Play

Refrigerator Student activity Play

Refrigerator Whiteboard exercise Play

Regulation of body temperature Slideshow Play

Renewable and non-renewable sources of energy Whiteboard exercise Play

Renewable and non-renewable sources of energy Student activity Play

Reversibility of the Carnot cycle Animation Play

Reversibility of the Carnot cycle Student activity Play

Reversible and irreversible processes Student activity Play

Reversible and irreversible processes Illustration Play

Reversible and irreversible processes Illustration Play

Roentgen spectra of elements – characteristic radiation Student activity Play

Roentgen spectra of elements – characteristic radiation Whiteboard exercise Play

Roentgen's experiment Animation Play

Rupture of the DNA molecule Slideshow Play

Sample handling Animation Play

Scanning electron microscope Slideshow Play

Scintillation counter Student activity Play

Scintillation counter Whiteboard exercise Play

Self-regulation of a solar reactor Animation Play

Sensing the world – receptors Student activity Play