Balancing equations worksheet for key stage 4, includes complete and incomplete combustion, and cracking. Used with a mixed ability year 9 class, best used with middle and higher ability year 9, or as revision for year 10 and 11.

Fill in the blank short worksheet used for a mixed ability year 9 class. The worksheet briefly covers atmospheric gases, algae and photosynthesis, and how the oxygen levels increased due to algae photosynthesising.

Used with a mixed ability year 9 class for GCSE atmospheric chemistry. Contains info on carbon dioxide, carbon monoxide, carbon particulates (soot), sulphur dioxide and nitrogen oxides. Also includes an extension on the pollution caused by diesel cars.

Revision sheet for AQA AS chemistry mechanisms in O2 ad O3. Free radical substitution, nucleophilic substitution and elimination reactions.