Chemistry is the branch of science that studies the composition, structure, properties, and changes of matter. It plays a crucial role in understanding the world around us, from the air we breathe to the food we eat. Chemists explore how substances interact and transform, leading to new materials and innovations. In addition to its fundamental principles, chemistry is divided into various subfields, including Organic Chemistry, Inorganic Chemistry, and Physical Chemistry. Each of these areas focuses on different aspects of matter and its behavior, contributing to advancements in medicine, environmental science, and technology.