The periodic table, provided at Ptable.com, is dynamic, letting users to see what each element does at various temperatures. The periodic table is fast and efficient. It is created in XHTML which gives the scalability and accessibility of a normal web page while looking as good as any image or Flash out there. It also offers links to PDFs in letter, legal, and A4 paper sizes as well as a large image in the PNG format.
I am impressed with this dynamic periodic table. I wish I had this site when I was a high school student taking chemistry classes. This should be a useful site for teachers and students in high schools and colleges. The periodic table is linked directly to Wikipedia that allows you to view the encyclopedia entries as small pop-ups. You can also drill down on any element’s info and view the data with color coding based on which group the element resides.