Thermodynamics as a discipline aims to understand the correlation between heat, energy and work done and is widely applied in various scientific fields. The chapters in this book discuss some of the significant concepts and applications related to thermodynamics such as chemical thermodynamics, thermophysics, and heat mass transfer. There has been rapid progress in this field and its applications are finding their way across multiple industries. It is an essential guide for both professionals and those who wish to pursue this discipline further.