Amazing! Place liquid nitrogen in a vacuum chamber and observe frozen nitrogen "ice." This video is part of the Flinn Scientific Best Practices for Teaching Chemistry Video Series, a collection of over 125 hours of free professional development training for chemistry teachers - http://elearning.flinnsci.com/ ATTENTION: This demonstration is intended for and should only be performed by certified science instructors in a safe laboratory/classroom setting. Be sure to subscribe and check out more videos! Subscribe: null Facebook: https://www.facebook.com/FlinnScientific/ Website: https://www.flinnsci.com/