Molecular physics is the branch of scientific study that focuses on the behavior and properties of molecules. Synonyms for molecular physics include molecular science, molecular chemistry, and molecular mechanics. These terms refer to the same scientific field, but may place emphasis on different aspects of molecular behavior, such as chemical reactions, thermodynamics, or mechanical properties. Other related fields of study may include molecular biology, which focuses on the properties and behavior of biological macromolecules, and materials science, which explores the properties and behavior of materials at the molecular level. Overall, molecular physics plays an important role in many fields of science and technology, from pharmaceuticals and electronics to climate science and environmental studies.