Liquid Nitrogen Tank

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Liquid Nitrogen Tank
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Liquid Nitrogen Tank
Liquid nitrogen storage tank at Illinois State
University.
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Liquid Nitrogen (N2)
Physical properties colorless liquid boiling
point -196 oC
Mr. Bergmann demonstrates properties of liquid
nitrogen.
Uses flash freezing food (peas, fish)
cosmetic surgery (removal of moles) size metal
pieces cryogenic freezer for genetic
samples (sperm, eggs)
WARNING Liquid nitrogen can cause severe burns.
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Pressure Gauge for N2
Note frozen water vapor on pipe (bottom left) of
photo.
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Liquid Nitrogen
Freeze-dried flower (lyophylization) VIDEO
Effect of temperature on volume of a gas VIDEO
http//www.unit5.org/chemistry/GasLaws.html
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Resources - Gas Laws
Objectives
Episode 17 The Precious Envelope
Worksheet - vocabulary
Worksheet - density of gases (table)
Video (VHS) - crisis in the atmosphere
Worksheet - practice problems for gas laws
Worksheet - behavior of gases
Worksheet - gas laws review / mole
Worksheet - unit conversions for the gas laws
Worksheet - review problems for gas laws
Worksheet - Graham's law
Demonstrations - gas demos
Worksheet - gas laws with one term constant
Worksheet - manometers
Worksheet - the combined gas law
Worksheet - vapor pressure and boiling
Worksheet - Dalton's law of partial pressure
Lab - reaction of Mg with HCl
Review main points
Worksheet - ideal gas law
Textbook - questions
Outline (general)
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KEYS - Gas Laws
Objectives
Worksheet - vocabulary
Worksheet - density of gases (table)
Video (VHS) - crisis in the atmosphere
Worksheet - practice problems for gas laws
Worksheet - behavior of gases
Worksheet - gas laws review / mole
Worksheet - unit conversions for the gas laws
Worksheet - review problems for gas laws
Worksheet - Graham's law
Demonstrations - gas demos
Worksheet - gas laws with one term constant
Worksheet - manometers
Worksheet - the combined gas law
Worksheet - vapor pressure and boiling
Worksheet - Dalton's law of partial pressure
Lab - reaction of Mg with HCl
Review main points
Worksheet - ideal gas law
Textbook - questions
Outline (general)