The Ri's very own demo technician, Andrew Marmery experiments with the element Argon in the Ri Prep Room. At room temperature Argon is an inert gas, requiring temperatures of below -189.3 degrees Celsius to freeze into a solid. The temperature range at which Argon exists as a liquid is extremely narrow (three/ four degress). As it begins to melt under room temperature it passes into its gas state almost instaneously. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Check our playlist "Tales from the Prep Room" here: https://www.youtube.com/playlist?list=PLbnrZHfNEDZyfUXqroIlSf2hOznnThqM0 The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and Tumblr: http://ri-science.tumblr.com/ Our editorial policy: http://www.rigb.org/home/editorial-policy Subscribe for the latest science videos: http://bit.ly/RiNewsletter