Physical chemistry

Physical chemistry is a science on mutual communication of chemical and physical phenomena, and on the relationship between the structure of atoms, molecules and macroscopic bodies and their chemical properties. The basic sections of modern physical chemistry: a study of the structure of molecules and chemical bonds; properties of solutions; on the velocity of chemical reactions and catalysis (chemical kinetics); chemical equilibrium; on thermal effects reactions (thermochemistry); about electrolysis and chemical sources of electric current (electrochemistry); about the properties of colloidal systems (see Colloids), suspensions and emulsions, (colloid chemistry).
Theoretical aspects of physical chemistry and physical-chemical methods of research, such as polarography, refractometry, find wide application in biology, physiology and medicine. Cm. also Chemistry.