Liquid nitrogen is very, very cold! (liquid nitrogen demonstration)
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- Original Source:Aaron A Keller
Conditions of Use:None Specified
Description
In this YouTube video, chemistry teacher Aaron Keller demonstrates the amazing properties of liquid nitrogen. He explains each demonstration in an understandable way. The temperature of liquid nitrogen is -196C (-321F). He explains how a dewar flask works. He pulls balloons out of a cooler, showing the expansion of a gas as it warms. He demonstrates the explosive power of the expansion of liquid nitrogen in an enclosed container. Liquid nitrogen is so cold that the floor is like a hot griddle. Liquid nitrogen has a very low viscosity. He demonstrates how brittle a flower becomes when frozen in a liquid nitrogen bath. Finally, he shows how to shatter a racquetball. As a bonus he shows how nitrogen gas can be used to put out a candle flame. Less
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Topics and Grades
Grade: PS/Pre-K to 12, Undergraduate to Graduate
Topics: Chemistry, Professional Development, Physics, States of Matter (solids, liquids, gases)
Resource Pedagogy
Resource Type/Classification:
- Interactives
- Teacher Materials
Tool for: Parents, Teachers, Students