Equilibrium position GCSE REVISION

This short revision lesson (@15-20 minutes) supports students to understand how changing conditions affects the position of the equilibrium. The lesson has been primarily designed for use with those students taking AQA GCSE Chemistry in the lead up to mock and GCSE examinations, but is also suitable for students taking combined science HT.

The lesson begins by challenging students to spot the energy change in the forward reaction of the Haber process amongst a group of numbers. They are then challenged to recall that the negative value indicates that it is an exothermic reaction in the forward reaction, and therefore an endothermic reaction in the reverse reaction. The main focus of the lesson is to remind them of the rules regarding the shift in the equilibrium position when temperature and pressure are changed. Several questions are modelled to allow them to see how to answer these types of questions and then a series of understanding checks in the form of exam-style questions are attempted to challenge application. All answers to these questions are embedded into the PowerPoint to allow them to assess their progress.