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  1. Home
  2. Physics Demonstrations and Equipment
  3. Thermodynamics
  4. Change of State
  5. Vapor Pressure

Vapor Pressure Concept

Demonstrations in Vapor Pressure

Top of pressure cooker showing pressure gauge (0-30 psi), ball valve with lever mechanism, and thermocouple wire exiting through the lid
Safety

Pressure Cooker

Shows that the boiling point of water depends on pressure. A differential thermocouple compares the temperature of boiling water at atmospheric pressure with water in a sealed pressure cooker, demonstrating …
Pulse glass at rest: hand-blown glass with two bulbs connected by a narrow stem with decorative loops, purple liquid pooled in the lower bulb
Safety

Pulse Glass

Demonstrates the temperature dependence of vapor pressure. A sealed glass tube contains methyl chloride; body heat from your hand increases the vapor pressure in the lower bulb enough to force …

Physics Undergraduate Laboratories
Department of Physics
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University of Colorado
Boulder, CO 80309

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