Boyle’s Law and the Mass of a Textbook
Effect of Pressure on the Size of a Balloon
Egg in a Flask – Thermal Decrease in Molar Volume
Flow of Gases Through Porous Cup
Rate of Diffusion: The Ammonium Chloride Ring
Boltzmann: Digital Simulation of Kinetic Molecular Theory
Boyle’s Law and the Monster Marshmallow
PhET Simulation of Gas Behavior
Effect of Pressure Differences on a Balloon In a Flask
Extinguishing Candles With Carbon Dioxide
A Metal Bar to Demonstrate One Atmosphere
Relation of Gas Pressure and Temperature
Transport of Carbon Dioxide Through a Soap Film
Digital Molecular Theory Simulator
Mercury Barometers
Description: Video of mercury barometers. It illustrates how to make a simple mercury barometer, and that the vertical height of the mercury column is independent of the particular shape of the tube confining it.
This demonstration is also available on JCE Software “Chemistry Comes Alive!” Vol. 2 CD-Rom
Source: JCE Videos “Chemistry Comes Alive!”
Year: 2000 Vol: 77 No. 5 Page: 671
Keywords: Mercury, J-tube, Barometer, Pressure, Manometer
Rating: 
Hazard: High
- Acute toxicity – dermal, inhalation
- Aquatic toxicity- long term
- Specific organ toxicity – central nervous system
- Reproductive toxicity
- Germ cell mutagenicity hazard
Effectiveness: Good
- Results are clearly observable with guidance
- Low failure rate
- Mild effects are seen by audience
- Time to effects is low
- Very good connection from demo to course material
- Contrast between systems is low
Difficulty: Medium
- Simple procedures
- Some intermediate steps to results
- Use of highly toxic chemicals
- Demos at non-standard conditions
- Some sequential manipulations
Safety Precautions:
- Use of UL approved three-prong plug and outlet
- Eye protection required
- Gloves required
- Perform in a well-ventilated area
- Mercury spill kit on hand
- Avoid exposure to vapors, droplets, or mists
- Prevent release of reagents to the environment
Class: Intermolecular Forces, Gas Laws
Division: General
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