National AIChE Students Organization - Visit the National Student website for AIChE.
Heuristics of Chemical Engineering - This is a great guide to Chemical Engineering tools. You can learn about cooling towers, evaporators, vacuum pumps, distillation processes, etc.
Steam Tables - Great for thermodynamic information.
Periodic Table - Need to look at an element, check this site out.
Unit Conversions - Convert anything you need right on the web.
Conversion Factor Handbook - Look at conversion factors.
Physical Constants - Look at the many constants in equations.
Student Chapters - Look for other student chapters in the U.S.A.
Scholarship Oppurtunities - Look at scholarship oppurtunities.
AIChE Bylaws
AIChE Constitution