2016-09-09

[public] 280K views, 7.28K likes, 73.0 dislikes audio only

Periodic Videos

Behold, the popular Elephant's Toothpaste reaction... We look at it in some detail.

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Raw footage of slow motion: https://youtu.be/r9_Xb1z45ZI

Hydrogen Peroxide solution is catalysed by Potassium Iodide - washing liquid (for foam) and food dye (for colour) make the whole thing more visible!

This video features Professor Martyn Poliakoff, Dr Samantha Tang and, of course, Neil Barnes.

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Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/

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