Behold, the popular Elephant's Toothpaste reaction... We look at it in some detail. Support us on Patreon and adopt an element: https://www.patreon.com/periodicvideos 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. More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/ Brady's Blog: http://www.bradyharanblog.com Join Brady's mailing list for updates and extra stuff --- http://eepurl.com/YdjL9