Physical chemistry is the subject chemistry that studies of equilibrium systems and chemical transformations, using physical and mathematical quantitative models. Their studies are divided in: macroscopic, equilibrium, estructure and transformations. Each in different subsections. The goal of physical chemistry would be able to explain the chemistry of the universe, of life, of industrial processes and reactions and energy transformations that control our industrial society from using atomic structures and recombination reactions (appling methods of quantum mechanics, microscopic methods).
The extraordinary usefulness of the microscopic methods in different areas of chemistry, medicine or biology, fails to predicting the direction, velocity and transformations. They also fail when trying to calculate the energy efficiencies of most of the physical and chemical processes that make our lives easier everyday.
That is why until we develop more effective quantum models, macroscopic parts of Chemical Physics, such as thermodynamics, are, over 200 years after its inception, the only ones that allow us to calculate basic aspects of our daily lives and the economy, as the energy content of fuels, moving ways tansformarlos or electricity (heat engines, fuel cells).
