Chemistry (Edexcel, Combined Science, Higher) Rates of Reaction and Energy Changes (Edexcel, Combined Science, Higher) Rates of Reaction and Energy Changes (Edexcel, Combined Science, Higher) Lesson Content 0% Complete 0/2 Steps Rates of reaction and energy changes - Rates of reaction (Edexcel) Rates of reaction and energy changes - Heat energy changes in chemical reactions (HT only) (Edexcel) Rates of Reaction and Energy Changes (Edexcel, Combined Science, Higher) Previous Lesson Back to Course Next Lesson Previous Lesson Back to Course Next Lesson