Ability to react with metal salts Animation Play

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

Acid-base reactions of metal ions Whiteboard presentation Play

Acid-base reactions of metal ions Class activity Play

Acidic properties of hydrogen halides Student activity Play

Acidity reaction (hydrolysis) of metal ions Student activity Play

Acidity reaction (hydrolysis) of metal ions Whiteboard exercise Play

Acids and alkalis Class activity Play

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

Across the periodic table Student activity Play

Additional information contained in chemical equations Student activity Play

Alkali metals Student activity Play

Application of sodium hydroxide Slideshow Play

Applications of sodium hydroxide Illustration Play

Arranging metals according to increasing reactivity Student activity Play

Arranging metals according to increasing reactivity Animation Play

Arterioles and capillaries Student activity Play