Web Elements
Web Elements Periodic Table: Nitrogen
Lots of valuable information on nitrogen, its properties and some of its uses and compounds.
Michigan Reach Out
University of Michigan: Liquid Nitrogen Fun!
Lessons and science demos using liquid nitrogen.
Royal Society of Chemistry
Royal Society of Chemistry: Nitrogen
A short but nice description of nitrogen's uses and properties. Discusses the history of nitrogen and its characteristics.
Chemicool
Chemicool: Nitrogen
This site from Chemicool provides a set of data tables summarizing basic chemical and physical properties of nitrogen.
Science4Fun
Science4 Fun: Nitrogen
Fun and interesting information about Nitrogen, the most abundant gas in the atmosphere. Learn about its characteristics, uses, where it is found, and discovery.