Physical chemistry is the science about the regularities of chemical processes and phenomena. Physical chemistry examines what is happening in any systems changes that accompanied the transition of the chemical form of energy in various physical forms. The main tasks of physical chemistry include the study and explanation of the major laws that determine the trend of the processes, the rate of their occurrence, impact on environment, impurity and conditions for obtaining maximum yield of the desired products. The main areas of physical chemistry are the study of the properties of matter in various physical forms, chemical thermodynamics, including thermochemistry and chemical equilibrium; solutions; electrochemistry; chemical reaction kinetics.

Colloid chemistry is independent area of physic-chemical science that studies the processes of formation and destruction of disperse systems and their characteristic properties associated with surface phenomena on the phase boundary in these systems.