From site:  Here you’ll find everything that you could possibly want to make you a chemistry superstar!  If you have any problems or questions that have anything to do with chemistry, then the resources here can answer your questions…

Free labs, worksheets, and other activities for chemistry and other science teachers!  Proof that the best things in life are free!…

Here at the Cavalcade o’ Chemistry, we love punk rock.  As a result, we figured we’d ask some prominent punk musicians of the past 25 years what they thought of chemistry when they took it in high school.

Rader’s CHEM4KIDS! provides free educational resources to students on matter, atoms, elements, periodic table, reaction, chemistry and biochemistry. The reading level of the illustrated material is best suited to middle, intermediate and high school students. There is a brief “check for understanding” quiz at the end of each section. Thus this site is best classified as an online textbook.

From site:  Every month our flagship publication, the Journal of Chemical Education, delivers a wide range of interesting articles and activities useful in both the classroom and laboratory.
 

From site: 

ACD/Labs has long been committed to helping the academic community provide future scientists with access to software that many will use throughout their chemistry careers. ACD/ChemSketch is a state-of-the-art chemical drawing software that we provide freely to students to initiate them into the world of chemical structure drawing, nomenclature, and property prediction at a high-level…

This software package is well suited to illustrate a variety of chemical concepts, and includes powerful optimization and 3D visualization tools as well as numerous chemical templates. Drawing molecules, reactions, and schematic diagrams could not be easier!

Here is an introductory guide to ChemSketch. Please note that this downloadable software must be run on a Windows platform.

This site provides a table of elements with detailed explanations of each.  It also describes products that are created from elements and the broad variety of permutations of each element.