Free database of IR, NMR, Raman, UV, and mass spectra of hundreds of thousands of spectra originally compiled by BioRad-Sadtler and now owned and supplemented by Wiley.
Informally known as the Gold Book, this source provides chemical nomenclature, terminology, symbols and units, and collects together terminology definitions.
A searchable repository of crowd-sourced chemical safety incident information, developed and hosted by CAS, a division of the American Chemical Society.
Evaluating Internet Sources - CRAAP Test
"Media Bias Handout" 2019 by Ame Maloney under "Creative Commons Atribution-NonCommercial 4.0"