Chemistry 30 A & B: Are there reliable websites I can use?

BookBoon offers more than 25 chemistry titles. These books are available for free as downloadable PDFs, but they do include some advertising.

Free chemical structure database providing fast text and structure search access to over 26 million structures from hundreds of data sources.

Instructional videos in many science disciplines including Chemistry and Geology. Search or Browse the categories.

LibreTexts Library holds Chemistry texts that are curated by the LibreTexts Development team.

MIT Open Courseware offers an extensive series of online courses in Chemistry. Course format generally includes lecture videos, interactive concept quizzes (solution key), problem sets, terms and definitions, suggested topics and links, and exams (with solution key).

Science.gov is a gateway to government science information and research results. It provides a search of over 50 scientific databases, 200 million pages of science information, and over 2100 scientific websites

TED-Ed is TED’s youth and education initiative. Search for both Chemistry and Geology related videos.

Highly reviewed by MERLOT peers - "Here's your chance to mix chemicals without wearing safety goggles. You won't spill any acid on the spectrometer in this lab. Choose solutions from the vast database and mix 'em together till the cloned cows come home. Marvel as the chemical solutions react in real time.