How to Make nitrogen dioxide in the lab

Love doing science experiments? Want to impress your friends with your science skills and look good? Then you must watch this video.

This video is a tutorial witch helps you to make a very interesting experiment in your own lab. In this experiment you produce a Nitrogen Dioxide from nitric acid, this method is secure, but you need so me elementary tools to be successful. After the nitrogen dioxide is produced, it is cooled and heated and is observed a color change.