This lesson is the third lesson in the GCSE Chemistry topic “Rate and Extent 2” (AQA GCSE Chemistry - 4.6.2.6 The effect of temperature changes on equilibrium (HT only))

This lesson is relevant and suitable for students studying AQA GCSE Chemistry and AQA GCSE Combined Science higher tier papers ONLY.

In this lesson students will recap what exothermic and endothermic reactions are, and learn how an equilibrium position can be affected by changes in temperature. They will identify the shifts in equilibrium, as well as describe these changes accurately and using correct vocabulary. Students will also practice this skill by explaining observable colour changes in equilibria as concentrations are altered. Students will also be able to explain reasons why reactions are not done at very low temperatures, despite this favouring the forward reaction.

This lesson resource contains models and comparisons to make this very difficult concept more visual. This lesson contains demonstration and mini-practical opportinities for students, as well as video and animation alternatives. This lesson is also suitable for students who may be distance learning.

Lesson objectives:

• Recall what an exothermic and endothermic reaction are
• Predict the effect of changing temperature on the position of an equilibrium using Le Chatelier’s principle
• Explain the need to sometimes compromise on temperature in equilibrium reactions

Resource contains:

• Lesson Powerpoint (pptx.)

Lesson contains:

• Interactive powerpoint including teacher delivery notes and answers throughout
• Explicit teaching of key vocabulary
• Writing frameworks
• Practical demonstration (with video and pptx animation alternative)
• Animations and modelling comprehension aids
• AFL activities (I do, we do, you do; think, pair, share; and mini-whiteboard activities)
• Past exam question practice, along with mark schemes (and examiners reports where available)