Acids (1) Student activity Play

Acids (1) Whiteboard exercise Play

Acids around us Whiteboard exercise Play

Acid–base reactions in a non-aqueous medium Animation Play

Activation energy Animation Play

Active and passive transport Whiteboard exercise Play

Active transport Student activity Play

Active transport Animation Play

Adaptation of organisms to osmosis Slideshow Play

Adaptation of the root to absorbing water from the soil Slideshow Play

Adaptations of fish to life in water Slideshow Play

Adaptations of fish to life in water Student activity Play

Adaptations of mammals and fish to life in water Whiteboard exercise Play

Adaptations of mammals to life in water Slideshow Play

Adaptations of mammals to life in water Student activity Play

Adaptations of predators and prey Illustration Play

Adding and subtracting negative numbers – the water level Whiteboard exercise Play

Addition of elements to alkenes Student activity Play

Addition of hydrogen bromide to ethene Whiteboard exercise Play

Addition of water to alkenes Animation Play

Addition of water to alkenes Student activity Play

Addition polymers and condensation polymers Student activity Play

Additional information contained in chemical equations Student activity Play

Advantages and disadvantages of using renewable energy sources Animation Play

Aerobic and anaerobic respiration in the human organism Student activity Play