Gas Law
Grayed Demos are either not available or haven't been built yet. |
PIRA classification 4E
4E10. Constant Pressure
PIRA # |
Demonstration Name |
Subsets |
Abstract |
4E10.00 |
Constant Pressure |
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4E10.10 |
hot air thermometer |
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4E10.10 |
hot air thermometer |
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A large round flask is hooked to a manometer. |
4E10.11 |
thermal expansion of air |
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4E10.11 |
Galileo's thermometer |
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An inverted flask with a long slender stem is set in water. As the air in the flask cools, the water in the tube rises. |
4E10.11 |
thermal expansion of air |
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Hold the inverted flask of Galileo's thermometer with the hands to heat the entrained air and force the water in the tube down. |
4E10.12 |
capillary tube thermometer |
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A capillary tube with a bead on mercury is sealed at one end. |
4E10.12 |
horizontal thermometer |
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An air filled flask fitted with a long slender tube is held horizontally and a small globule of mercury moves in the tube as the air in the flask changes temperature. |
4E10.13 |
gas thermometer |
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A gas thermometer operated at reduced pressure. |
4E10.14 |
air thermometer |
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Just an unclear picture - might be a balloon on a flask. |
4E10.15 |
change of volume with change of temp |
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A flask with a balloon fitted on the neck is heated with hot water and immersed in dry ice/alcohol. |
4E10.15 |
balloon on a flask |
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A balloon on the neck of a large flask changes volume when the flask is placed into hot water or dry ice/alcohol. |
4E10.16 |
expansion of gasses |
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Two identical constant pressure gas thermometers are filled with different gasses and immersed in a water bath to show the same volume increase. |
4E10.16 |
expansion of gasses |
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Two bulbs connected by a "U" tube manometer are filled with different gasses and heated the same amount by immersing in a water bath to show pressure increase is the same on both sides. |
4E10.20 |
balloons in liquid nitrogen |
pira200 |
Pour liquid nitrogen over an air filled balloon until it collapses and then let it warm up again. |
4E10.21 |
balloon in liquid nitrogen |
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A balloon partially inflated on the end of a glass rod is immersed in liquid nitrogen. |
4E10.22 |
balloons in liquid nitrogen |
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Cool balloons filled with Carbon dioxide, argon, helium, pass them around the class. |
4E10.30 |
air pressure at low temperature |
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Immerse the bulb of a small thermoscope in liquid air. |
4E20. Constant Temperature
PIRA # |
Demonstration Name |
Subsets |
Abstract |
4E20.00 |
Constant Temperature |
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4E20.10 |
square inch syringe |
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4E20.10 |
Boyle's law syringe |
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A glass syringe is mounted vertically with a weight holder attached to the plunger. |
4E20.10 |
gas law with hypodermic syringe |
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A hypodermic syringe mounted vertically shows PV relations. |
4E20.11 |
Boyle's law |
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Stack weights on a piston and read the volume off a scale. Picture. |
4E20.12 |
square inch syringe |
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4E20.15 |
syringe and pressure gauge |
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4E20.15 |
pressure vs. volume |
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A pressure gauge is mounted on a glass syringe. |
4E20.20 |
Boyle's law apparatus |
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4E20.20 |
Boyle's law apparatus |
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A mercury barometer attached with a heavy walled tube to an adjustable glass tube. |
4E20.20 |
Boyle's law apparatus |
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A flexible tube of mercury is used to apply pressure to a chamber of air. From Am.Jour.Sci. 32,329,1911. |
4E20.21 |
Boyle's law |
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A large Boyle's law apparatus. Diagram and construction hints. |
4E20.22 |
Boyle's law apparatus |
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A curved tube with air trapped in the shorter closed end by mercury is tipped to change the pressure from the mercury column. |
4E20.25 |
Boyle's law apparatus |
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A projection Boyle's law apparatus is shown. Includes a projection pressure meter. |
4E20.26 |
Boyle's law apparatus |
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A projection Boyle's law apparatus using a mercury plug in a capillary as an indicator. |
4E20.30 |
Boyle's law with tap pressure |
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4E20.30 |
Boyle's law with tap pressure |
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Eliminate mercury with this tap water pressure apparatus. |
4E20.31 |
Boyle's law |
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"Lab-gas" units are a convenient source of low-pressure gas for Boyle's law demonstrations. |
4E20.40 |
balloon in a vacuum |
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4E20.40 |
balloon in a vacuum |
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Place a partially filled balloon in a bell jar and evacuate. Also try a fresh marshmallow. |
4E20.50 |
Boyle's law - air track model |
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An air track cart represents a one-molecule gas. The frequency of the collisions with the ends increases if the track is made shorter. |
4E30. Constant Volume
PIRA # |
Demonstration Name |
Subsets |
Abstract |
4E30.00 |
Constant Volume |
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4E30.10 |
constant volume bulb |
pira200 |
A bulb with an absolute pressure gauge is immersed in boiling water, ice water, and liquid nitrogen. |
4E30.10 |
constant volume thermometer |
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Immerse a tank bulb with an attached pressure gauge in various temperature water baths. |
4E30.10 |
constant volume bulb - He |
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A Bourdon pressure gauge is attached to a toilet-tank bulb filled with helium and immersed in boiling water, dry ice, and liquid nitrogen. |
4E30.10 |
pressure vs. temperature |
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A constant volume sphere with a pressure gauge is shown at room temperature and immersed in ice water and boiling water baths. |
4E30.11 |
gas thermometer |
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A bulb is connected to a mercury manometer. |
4E30.12 |
constant volume bulb |
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Capillary tubes containing mercury pistons are attached to toilet-tank bulbs filled with different gasses. |
4E30.20 |
constant volume thermometer |
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4E30.20 |
constant volume thermometer |
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A bulb is connected to a mercury manometer that can be raised or lowered to keep the mercury on the bulb side at the same place. |
4E30.21 |
constant volume air thermometer |
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Looks like the Boyle's law apparatus except the enclosed end has a small flask suitable for immersing in a cold water bath. Adjustments are used to keep the volume constant. |
4E30.30 |
light bulb pressure |
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Heat a light bulb locally and the glass is pushed in, then heat it while on and the glass is pushed out. |
4E30.40 |
heat generated by spark |
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The increased pressure of air in an enclosed container heated by sparking is measured with a manometer. |