Surface chemistry is the study of chemical reactions and processes that occur at the interface between two phases, such as solid-gas, solid-liquid, or liquid-gas interfaces. This area of research focuses on understanding the behavior of molecules and atoms that make up the surface of materials and how they interact with other substances. Surface chemistry plays a critical role in various fields, including catalysis, corrosion, adhesion, and biotechnology. Researchers in this field use techniques such as spectroscopy, microscopy, and electrochemistry to study the structure, reactivity, and properties of surfaces at the atomic and molecular level.