The title pretty much says it. 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 Film by James Hennessy and Brady Haran A run-down of Brady's channels: http://bit.ly/bradychannels