Chemistry is the study of matter, the changes undergone by matter, and the laws governing these changes.
Chemists study atoms as well as the structures and reactions of molecules.
Chemical principles are fundamental to the understanding of subjects ranging from the molecular basis of biology to the structure of rocks and minerals. Chemistry is an essential foundation in engineering disciplines, especially in chemical engineering, the electronics field, energy and environmental science, geology, pharmacy and medicine, and in virtually all areas of manufacturing. Chemistry is an active science that is vital to human existence. Energy needs, environmental concerns, and requirements for new materials all involve major contributions from chemists. Chemistry involves more than test tubes and beakers.