The Science of Matter, also known as CHEMISTRY, is the study of the composition, structure, and properties of matter, as well as the changes it undergoes. It is a branch of physical science that deals with the study of the composition, structure, and properties of substances and how they interact with one another. CHEMISTRY is used to explain the behavior of matter in terms of energy and forces between particles. It is also used to understand the interactions between different elements and compounds, and to develop new materials and products.