In this computer-based exercise, students analyze realistically simulated X-ray spectra of a supernova remnant and determine the abundances of various elements in them. In the end, they will find that the elements...

From the NIST Physics Laboratory Physical Reference Data Page, this new addition "provides access to the holdings of NIST Physics Laboratory online data organized by element." The index (accessible in frames, no-frames,...

This National Institute of Standards and Technology (NIST)) site contains atomic spectroscopic reference data. Information can be accessed through a variety of means, such as an interactive periodic table and dropdown...

It can be tricky to remember the position of lanthanides within the periodic table of elements, but this interactive feature from Annenberg Media's "Interactive" series will keep students in the know about those...

This is a great resource for science and chemistry students at the K-12 level or even postsecondary. The image shows each element of the periodic table represented by a picture of something that contains that element....