This short lecture from Yale's Introduction to Green Chemistry course covers the basics of representing chemical structures, part of Module 2 on chemical foundations. The instructor walks through how molecules are drawn using structural notation and how naming conventions translate those structures into words, framing both skills as prerequisites for understanding green chemistry metrics later in the course. The pace is brisk and aimed at building vocabulary and visual literacy rather than exploring any single reaction in depth. Expect a chalkboard or slide-based walkthrough of molecular diagrams and nomenclature rules rather than lab demonstrations. It functions as a building-block segment within a larger sequence, useful mainly for viewers following the full module rather than as a standalone deep dive.