Popular at Halloween parties, what is that mysterious substance that gives off "smoke" and doesn't leave a puddle behind? Come along with Cheryl and learn what Dry Ice actually is and what makes it so unique!
This lesson is part of the Hot &amp; Cold unit.
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Lesson 15 - How does liquid nitrogen work?

Have you ever felt like you slept through science when you were in school, but now wish you could understand the world around you better? Then this podcast is for you! Each week Cheryl asks a science question and Ryan, a science teacher, does his best to answer. From boiling water to shooting stars and everything in between, listen along and learn about the science you encounter every day.