| Branch | Sub-branch | Definition |
|---|
| Physical Chemistry | Physical Chemistry | Study of the physical properties of molecules |
| Chemical Kinetics | Study of the rates of chemical reactions |
| Electrochemistry | Study of the interaction of atoms, molecules, ions, and electric current (i.e. electron transfer between the electrode and the electrolyte or species) |
| Surface chemistry | study of chemical reactions at surfaces (of substances) |
| Thermochemistry | Study the relation between the chemical action and the amount of heat absorbed |
| Quantum Chemistry | Study of application of quantum mechanics in physical models |
| Spectroscopy | Study of spectra of light or radiation |
| Photochemistry | study of the chemical effects caused by light |
| Organic Chemistry | Organic Chemistry | Study of structure, properties, and preparation of the chemical (carbon) compounds (e.g. fuels, plastics, food additives, and drugs) |
| Stereochemistry | Study of the relative spatial arrangement of atoms (in molecules) |
| Physical organic chemistry | study of structure and reactivity (interrelationship) in organic molecules |
| Polymer Chemistry | Study of polymer molecules (composition and creation) |
| Organometallic Chemistry | Study of chemicals that contain bonds (especially between a carbon and a metal) |
| Medicinal chemistry | Study of designing, developing, and synthesizing the drugs & medicines |
| Inorganic chemistry | Inorganic chemistry | Study of all materials that are not organic (such as minerals, metals, catalysts, crystal structures, etc.) |
| Organometallic Chemistry | Study of chemical compounds containing bonds (especially between carbon and metal) |
| Solid-state Chemistry | Study of chemical compounds that contains bonds between carbon and metal |
| Nuclear Chemistry | Study of radioactive substances |
| Geochemistry | Study of chemical composition the earth (e.g. rocks, minerals & atmosphere) |
| Bioinorganic Chemistry | Study of interactions between metal ions and living tissue |
| Coordination Chemistry | |
| Biochemistry | Biochemistry | Study of chemical reaction (and changes) in living beings |
| Molecular Biochemistry | Study of Biomolecules along with their functions |
| Clinical Biochemistry | Study of chemical changes in living beings, caused by caused by different diseases |
| Molecular Biology | Study of the different types of DNA, RNA, and protein biosynthesis (and their relationships) |
| Agricultural biochemistry | Study of chemistry of fauna (i.e. plants) |
| Analytical Chemistry | | Study of standardized experimental methods in chemistry (i.e. quantitative determination of chemical properties of a substance) |
| Astrochemistry | | Study of the reactions of chemical elements and molecules found in the universe |
| Cosmochemistry | | Study of the chemical composition of the matters found in the universe |
| Environmental chemistry | | Study of chemical and biochemical phenomena that occur in the environment |