Quizlet
Paper 1
Double award is topics 1-4
Single chemistry GCSE is topics 1-5
This site is a good summary of Reversible reactions: https://ebeducationservices.co.uk/wp-content/uploads/2019/09/EB-How-to-Work-with-Dynamic-Equilibrium.pdf
Topic 5 (Single chemistry only)
Paper 2
Double award is topics 1 and 6-8
Single chemistry GCSE is topics 1 and 6-9
Topic 1 (this is the same as paper 1)
Topic 9 (Single chemistry only)