When doing research on the web it is really important to evaluate the source. There are many different methods of deciding if a source is credible, an easy evaluation phrase to remember is The CRAAP Test:
CURRENCY
timeliness of the information
RELEVANCE
importance of the information for your needs
AUTHORITY
source of the information
ACCURACY
reliability, truthfulness, and correctness of the content
PURPOSE
reason the information exists
NOTE: It's not always this simple. Ask about Lateral Reading.
ChemSpider is a "free chemical structure database providing fast text and structure search access to over 32 million structures from hundreds of data sources."
Contact the Science, Mathematics and Engineering liaison librarian: Amy.Scheelke@slcc.edu. You may also schedule a 30-minute library consultation with Amy.