Chemistry

"The Chemical Group Theory site contains readings, equations, and lecture slides which have been developed to support the “Solids-part” of the course, CHEM 583: Chemical Group Theory, at Iowa State University. These materials cover several topics relevant to the study of group theory in Chemistry and Solid-State Chemistry in particular, including: translational and rotational symmetry, space groups, and electronic and vibrational states of crystals, among others."
License: CC BY 4.0

Note from Iowa OER staff:
"These modules are available in PubPub and downloadable in several formats, including PDF, Word, Markdown, HTML, and others (though please note, as in all auto-generated outputs, some downloadable formats render better than others). "

This resource is a introductory module to nuclear chemistry. It addresses basic concepts and some commonly asked questions in nuclear chemistry and is maintained by professors at the University of California San Diego.

This tutorial by Dr. Stephen A Morgan of the University of South Carolina created this step by step tutorial to understanding significant figures. Especially useful is the 3rd slide which contains numerous example numbers and their significant figures.

"The ChemDoodle Web Components library is a pure Javascript chemical graphics and cheminformatics library derived from the ChemDoodle™ application and produced by iChemLabs. ChemDoodle Web Components allow the wielder to present publication quality 2D and 3D graphics and animations for chemical structures, reactions and spectra."

"An Open Education Resource (OER) portal for chemical education material related to the Internet of Things."