Which statement correctly describes bond breaking and bond forming?

Study for the CIE Chemistry Advanced Subsidiary (AS) Level Test. Prepare with multiple-choice questions and detailed explanations. Master the exam!

Multiple Choice

Which statement correctly describes bond breaking and bond forming?

Explanation:
Bond energies show that breaking bonds requires energy input to overcome attraction between atoms, so it is endothermic. In contrast, forming new bonds releases energy as the system moves to a more stable, lower-energy state, which is exothermic. The statement that bond breaking is endothermic correctly reflects the energy flow during bond disruption. The other ideas would imply energy is released when breaking bonds or absorbed when forming them, which doesn’t fit the usual energy changes for these steps.

Bond energies show that breaking bonds requires energy input to overcome attraction between atoms, so it is endothermic. In contrast, forming new bonds releases energy as the system moves to a more stable, lower-energy state, which is exothermic. The statement that bond breaking is endothermic correctly reflects the energy flow during bond disruption. The other ideas would imply energy is released when breaking bonds or absorbed when forming them, which doesn’t fit the usual energy changes for these steps.

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