chemical bond energy

Exothermic and endothermic reactions

Endothermic Reactions Endothermic reactions are those chemical reactions where energy is absorbed by the system from the surroundings mostly in the form of heat. The concept is applied in the physical sciences like chemical reactions where hear is converted to chemical bond energy by way of experiments. Common examples of endothermic reactions are cooking an egg, photosynthesis, and evaporation. This reactions process accounts for the enthalpy change of a reaction only. The overall energy analysis of any reaction is the Gibbs free energy that includes temperature and entropy in addition to the enthalpy. The point to mention here is that ... Read more