Explore the fundamental building blocks of matter in this 31-minute chemistry lecture on atomic structure. Delve into the historical development of atomic theory, from Dalton's early concepts to the groundbreaking discoveries of subatomic particles. Learn about the electron, proton, and neutron, and how they combine to form atoms. Examine Rutherford's atomic model and Chadwick's discovery of neutrons. Understand how to estimate atomic mass and the concept of isotopes. Investigate the formation of ions and their importance in chemical reactions. Conclude with a comprehensive review of atomic structure, providing a solid foundation for further study in chemistry and its applications in understanding the universe.