Explore the fundamental concepts of environmental science in this comprehensive lecture on matter and energy in the environment. Delve into the basics of chemistry, examining elements, atoms, molecules, isotopes, and mixtures. Discover the origins of Earth's matter and the unique properties of water. Investigate organic compounds, macromolecules, proteins, RNA, and DNA. Learn about potential and kinetic energy, the laws of thermodynamics, and how autotrophs produce chemical energy. Gain insights into the periodic table, radioisotopes, atomic bonding, and the role of hydrogen ions in determining acidity. Understand the electromagnetic spectrum and its relation to photosynthesis. Enhance your knowledge with a linked video on entropy by Sal Khan, making this lecture an essential resource for anyone interested in environmental science and its core principles.