Chemistry and Physics

A one-stop resource for anyone looking for pertinent information on any element in the periodic table.

Open access to over 1 million e-prints of scientific papers in the fields of computer science, mathematics, physics, quantitative biology, quantitative finance, and statistics.

A chemical dictionary and structure database.

Contains chemical and physical property data on over 30,000 organic chemistry compounds.

A web-based publication of virtually all Massachusetts Institute of Technology course content. OCW is open and available to the world.

A repository of peer-reviewed scientific publications and associated data funded by NASA, beginning in 2016.

A search engine for scientific data and other information that can be hard to find using more common search engines. Results include diagrams and images that illustrate the data and text.