No academic catalog is going to define an undergraduate class as a “weed-out” or “gatekeeper” course. But these courses can come to define individual career paths, pushing some students out of STEM ...

Correction appended This article is the first in a series on the most difficult classes to teach at Cornell. Every year, the class begins with a bang. Literally. This year, the bang came in a simple ...

Introductory chemistry for students who plan to major in a scientific field. Appropriate for students desiring to prepare themselves for Chemistry 1A. Emphasizes chemical nomenclature and techniques ...

Fundamental principles and concepts of chemistry, including stoichiometry; thermochemistry; atomic and molecular structure; solution chemistry, including acid-base chemistry; quantum theory; bonding ...

Laura Van Dorn is a professor at the University of Arizona. She currently teaches chemistry 101A and 101B. CHEM 101A is a general chemistry course and CHEM 101B is an introductory course to organic ...