Enthalpy Changes [IB Chemistry SL/HL]

Summary

The video explains the concepts of exothermic and endothermic reactions, focusing on how heat is either released or absorbed during chemical processes. It covers the role of bond energy in determining the enthalpy change of reactions and introduces the concept of activation energy, which explains why some reactions require an initial input of energy. Practical methods like calorimetry are discussed to measure heat changes in reactions, and an example calculation illustrates how to determine the heat released using the equation Q = MCΔT. The video offers a comprehensive introduction to energetics in chemical reactions.