Bond Energies. 1.0 / 5 based on 1 rating ? ChemistryBond energies.GCSEOCR Created by: Sophia BoothCreated on: 17-05-18 06:55 What happens in endothermic reactions? Bonds break. 1 of 5 What happens in exothermic reactions? Bonds form. 2 of 5 Equation for overall energy charge? Energy required to break bonds - energy released by forming bonds. 3 of 5 What does a positive energy change mean? Endothermic reaction. 4 of 5 What does a negative energy change mean? Exothermic reaction. 5 of 5
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