pptx, 1.22 MB
pptx, 1.22 MB
A lesson covering endothermic and exothermic in terms of bonding breaking and making, drawing reaction diagrams and calculating overall energy changes from bond energy (higher only). Includes exam questions from the new spec. Designed for Edexcel 9-1 combined science. Includes higher only content.

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1

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nexhat

6 years ago
1

very poor ppt nothing on it <br /> three lessons in 15 poor slides

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