Catalysts Student activity Play

Changes in oxidation states in redox reactions Student activity Play

Changes in the atomic radius of s-block elements within the period Animation Play

Changes in the first ionisation energy across Period 3 Illustration Play

Changes in the ionisation energy across a period Animation Play

Chemical bonding in the chlorides of Period 3 Student activity Play

Chemical change Student activity Play

Chemical elements that make up black soil Illustration Play

Chemical equation Slideshow Play

Chemical equation Student activity Play

Chemical equations Student activity Play

Chemical properties of ethanoic acid Student activity Play

Chloride ion content in sea water Animation Play

Circulation of matter in the environment Animation Play

Classification and uses of acids Student activity Play

Classifying substances Illustration Play

Classifying substances Student activity Play

Combination and decomposition reactions Student activity Play

Combination reaction Slideshow Play

Combustion of magnesium Slideshow Play

Combustion of magnesium and aluminium: a chemical change Animation Play

Combustion of magnesium and copper in air Animation Play

Combustion of magnesium in oxygen Animation Play

Combustion of magnesium in the oxygen Animation Play

Combustion of magnesium metal Animation Play