Combined Science GCSE
Bond breaking and bond formation
What Bond breaking and bond formation means in Combined Science GCSE, as defined for AQA.
Definition of Bond breaking and bond formation
Check what you remember
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Reference: AQA
Every reaction involves breaking bonds in the reactants and forming bonds in the products; breaking a bond requires an input of energy, while forming a bond releases energy.
Topics that use Bond breaking and bond formation
- The energy change of reactions (HT only) (AQA GCSE)
Related terms
- Bond breaking
- 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
- Overall energy change of a reaction
Using Bond breaking and bond formation in the exam
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