An ill prepared political science student was sitting for his chemistry exam. For the question define a free radical he wrote, a wild protestor.

Video: the 'Traffic Lights' Reaction

Have you watched a solution that changes colour from green to red? Here's a video that shows how chemistry can be quite fun.

In this video, chemical scientists of the University of Nottingham, UK explain how to do this experiment. You can try it yourself in your school lab, with the help of your teachers!

(Video titled "periodicvideos - February 22, 2010 - The traffic light reaction sees a solution change colour from green to red to amber. " sourced from

Tags :     Everyday Chemistry     Sodium Hydroxide     Oxygen     Water     Glucose     traffic lights reaction     indigo carmine     pH indicator    

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