Absorption and waste Class activity Play

Absorption of light by transition metal ions Animation Play

Absorption of the products of carbohydrate digestion Animation Play

Absorption of the products of protein digestion Animation Play

Absorption of the products of protein; carbohydrate and lipid digestion Student activity Play

Absorption spectrum of Co(II) ions Illustration Play

Absorption spectrum of Co(II) ions Whiteboard exercise Play

Absorption spectrum of Ti(III) ions Illustration Play

Abundance of chemical elements in nature Student activity Play

Abundance of the elements in the crust and in the whole Earth Animation Play

Acid-base reactions of metal ions Class activity Play

Acid-base reactions of metal ions Whiteboard presentation Play

Acidic properties of hydrogen halides Student activity Play

Acidity reaction (hydrolysis) of metal ions Whiteboard exercise Play

Acidity reaction (hydrolysis) of metal ions Student activity Play

Acids and alkalis Class activity Play

Alkaline earth metals Slideshow Play

Alkaline earth metals Student activity Play

Application of calcium hydroxide Animation Play

Aqueous solutions of bases Whiteboard exercise Play

Arterioles and capillaries Student activity Play

Atomic number Student activity Play

Atomic number Whiteboard exercise Play

Balancing chemical equations and stoichiometry Animation Play

Behaviour of halide ions in the presence of silver nitrate(V) Animation Play