Combined Science GCSE
Overall energy change of a reaction
What Overall energy change of a reaction means in Combined Science GCSE, as defined for AQA.
Definition of Overall energy change of a reaction
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Reference: AQA
The difference between energy released and energy absorbed; in an exothermic reaction it is negative because more energy is released than absorbed.
Topics that use Overall energy change of a reaction
- The energy change of reactions (HT only) (AQA GCSE)
Related terms
- Bond breaking
- Bond breaking and bond formation
- Conservation of energy in chemical reactions
- Endothermic reaction
- Energy transfer to and from the surroundings
- Exothermic and endothermic processes
- Exothermic and endothermic reactions
- Exothermic reaction
Using Overall energy change of a reaction in the exam
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