Senior Chemical Reactions unit

This unit is most suitable for students who have already learnt about the building blocks of chemistry, such as atoms and molecules and chemical equation writing.
Recommend age range: 13-16.


You may have seen someone drop a sliver of sodium into water – it’s a classic chemistry demonstration with explosive results.

Not all reactions are explosive and some can be live-saving. For example, a team of scientists have developed a self-healing material for use in space.

In this unit you will investigate the following:

  • What is the difference between a chemical reaction and a physical change?
  • How do we represent chemical reactions?
  • Why do chemical equations need to be balanced?
  • How can we classify chemical reactions?
  • How can we influence the rate of a chemical reaction?

The science and society section has a profile on forensic research scientist, Glen Jackson. Then we take a look at the responsibilities scientists bear for their work, using the example of Fritz Haber’s development of chemical weapons

Get ready for a mind-blowing look at chemical reactions!