GCSE Chemistry - Bond Energies #44 (Higher tier)

The video tutorial explains bond energies and their significance in determining whether a chemical reaction is exothermic or endothermic. It describes bond energy as the energy required to break one mole of a covalent bond and highlights that breaking bonds is endothermic while forming bonds is exothermic. The tutorial provides examples of reactions, such as hydrogen with chlorine and nitrogen with hydrogen, to demonstrate how to calculate the overall energy change by comparing the energy required to break bonds with the energy released during bond formation.

What is bond energy and how is it related to breaking covalent bonds?

Explain the difference between exothermic and endothermic processes in the context of bond formation and breaking.

How do you determine if a reaction is exothermic or endothermic using bond energies?

What calculations are involved in finding the overall energy change for a reaction?

In the example of nitrogen and hydrogen reacting, what bonds need to be broken and formed?