Chemical structure is a branch of chemistry that focuses on the arrangement of atoms in molecules and the chemical bonds that hold them together. Understanding the chemical structure of a molecule is crucial for predicting its physical and chemical properties, reactivity, and behavior in various chemical reactions. Researchers in this area use techniques such as spectroscopy, X-ray crystallography, and computational modeling to analyze and determine the structure of molecules. By studying chemical structure, scientists can design new drugs, materials, and technologies with specific properties and functions.