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Energy changes

AQA GCSE Combined ScienceTopic 12 of 243 lessons

Revision notes for Energy changes in AQA Combined Science: Trilogy (8464). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.

  1. Energy transfer during exothermic and endothermic reactionsEnergy cannot be created or destroyed in a chemical reaction.
  2. Reaction profilesA reaction can only happen when the reacting particles collide with each other and with enough energy.
  3. The energy change of reactions (HT only)In every chemical reaction the bonds in the reactants must be broken, and new bonds form in the products.

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