Gas Law Topic

Constant Pressure

Concept 2 demos

Setup: yellow Thermolyne hot plate with beaker of boiling water (left), green glass bottle with deflated pink balloon (center), and 2000 mL beaker of ice water (right)

Hot and Cold Air Balloon

Demonstrates Charles's Law ( at constant pressure). A balloon on a bottle inflates in boiling water and collapses in ice water, giving students a direct visual of gas volume changing …

Tan liquid nitrogen dewar with warning label, clear glass bowl, inflated dark green balloon, and metal tongs on a green benchtop

Shrinking Balloon

Students observe Charles's Law ( at constant) as a balloon shrinks dramatically in liquid nitrogen. Comparing balloons filled with air, CO, and helium reveals both the ideal gas relationship and …

Constant Temperature

Concept 2 demos

EME Corporation Boyle's Law apparatus: graduated glass syringe (left) connected by clear tubing to a circular Bourdon-tube pressure gauge (right) with brass fittings, labeled "BOYLE'S LAW" at the top with a V-P data table

Boyle's Law, Varying Volume

Students observe the inverse relationship between pressure and volume at constant temperature using a syringe connected to a pressure gauge. Provides direct quantitative evidence for Boyle's Law .

Boyle's Law apparatus on a wooden base: a circular pressure gauge (0-2 ata scale) on the left connects to a metal valve assembly and a horizontal cylinder with alternating orange and black graduated volume markings, with a rubber tube for air supply

Boyle's Law, Varying Pressure

Quantitatively demonstrates Boyle's Law by measuring pressure-volume pairs as compressed air drives a piston in a sealed cylinder. Students verify the inverse relationship between pressure and volume at constant temperature.