|A great reason to use Chemistry Cat!!|
The Homeschool Mom offers an e-book on how to make your own periodic table.
Middle School Chemistry is just that. It's a site that offers lessons plans for middle school chemistry. It has activities and multi-media. Some if not all could be adapted for other ages.
Chemistry for Kids has experiments, of course, but also games, videos, lessons, quizzes, and facts.
Sheppard Software is known for all its educational games including these games dealing with the elements and periodic table.
Creative Chemistry has a lot of fun resources including printables, puzzles, and more.