{"id":825,"date":"2015-05-28T14:47:40","date_gmt":"2015-05-28T14:47:40","guid":{"rendered":"https:\/\/staging.asminternational.org\/smst\/video\/making-solid-nitrogen\/"},"modified":"2015-05-28T14:47:40","modified_gmt":"2015-05-28T14:47:40","slug":"making-solid-nitrogen","status":"publish","type":"video","link":"https:\/\/www.asminternational.org\/smst\/videos\/-\/journal_content\/56\/10192\/25475717\/VIDEO\/","title":{"rendered":"Making solid nitrogen"},"content":{"rendered":"

\n\tWhat happens when you decrease the pressure around a liquid? It boils. Water boils at room temperature once the pressure is low enough. What is interesting is that this decreases the temperature of the liquid. The fastest molecules escape, leaving the slower ones behind. Using this trick with liquid nitrogen, it is possible to create solid nitrogen at a temperature of -210\u00b0C. We then poured the solid and liquid nitrogen mixture onto a tray of water. The surface of the water became so cold that CO2 solidified out of the atmosphere on its surface. Then, because CO2 does not pass through the liquid phase at atmospheric pressure, it was propelled on the water surface by jets of gas as it sublimed.<\/p>\n

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