The scientific study concerned with the structure of matter is known as chemistry. Chemistry focuses on the composition, structure, properties, and reactions of substances, exploring how different elements and compounds interact at the molecular and atomic levels. This branch of science is essential for understanding various phenomena, including the formation of new materials, chemical reactions, and the behavior of substances under different conditions. Chemistry plays a critical role in fields like medicine, environmental science, and materials engineering, making it integral to advancements in technology and improving our quality of life.