Physical chemistry as a definition is the branch of chemistry concerned with reactions and transformations of substances, and deals with the principles of physics underlying all chemical reactions (such as gas laws), while seeking to measure, relate and explain the quantitative aspects of the reactions. Sub-disciplines of physical chemistry include:

• Electrochemistry
• photochemistry
• surface chemistry
• chemical stimulation
• Quantum Chemistry
• Radiochemistry
• Thermochemistry

Physical chemistry combines the principles of physics and chemistry to study the physical properties or properties of molecules. By understanding these properties, you can learn more about the way molecules are assembled, as well as how the actual composition of a chemical is affected by these properties, how molecules are assembled, and whether they can be synthesized or made. By chemical reaction.

Some of the relationships that physical chemistry strives to resolve as influences include:

• Intermolecular forces that act on the physical properties of materials.
• The kinetics of the reaction depends on the rate of the reaction.
• Determination of ions and electrical conductivity of materials.
• Surface science and electrochemistry of cell membranes.
• The interaction of one body with another in terms of amounts of heat and work is called thermodynamics.
• The transfer of heat between a chemical system and its surroundings during a phase change or chemical reaction is called thermochemistry.
• Study the aggregative properties of a number of species present in the solution.
• Electrochemical reactions of cells.