Reactions involving phase changes Animation Play

Reactions occurring on the surface of a solid catalyst Student activity Play

Reactions of complex ions Student activity Play

Real gases Student activity Play

Recent changes in the Earth's temperature Slideshow Play

Recombination in bacteria Animation Play

Reduction Slideshow Play

Representative values of chemical shifts Animation Play

Responses of the autonomic nervous system to changes in the external environment Student activity Play

Responses to changes in ambient temperature Whiteboard exercise Play

Reversible reactions and chemical equilibrium Class activity Play

Reversible reactions and chemical equilibrium Whiteboard presentation Play

Rusting Simulation Play

s-block elements Animation Play

Safety in the chemical laboratory Whiteboard presentation Play

Safety in the chemical laboratory Class activity Play

Seasonal changes Student activity Play

Seasonal changes Whiteboard exercise Play

Smelting lead Animation Play

Speed changes Animation Play

Spontaneous changes Animation Play

Spontaneous changes and probability Student activity Play

Spontaneous changes and probability Whiteboard exercise Play

Spontaneous chemical modifications of nitrogenous bases Slideshow Play

Standard entropy values Animation Play