Let’s go sub-zero with fascinating fast facts about liquid nitrogen, a deep dive into how people use liquid nitrogen, a question about the safety of liquid nitrogen, some ideas about how cryogenic liquids are made, and a chilling experiment for you to try yourself at home.

Written, presented, and produced by Jenny Lynch.

https://www.creativescience.com.au

Episode content:

00:00 Introduction and fast facts

02:53 Uses for liquid nitrogen

04:25 How dangerous is liquid nitrogen?

06:33 Making liquid nitrogen, the temperatures of other cryogenic liquids

08:47 Frozen lettuce activity

You will need two fresh lettuce leaves, a fridge and freezer, and a plate.