The Relationship between the Pressure
and the Volume of a Gas
Purpose:
To allow students to discover the relationship between the pressure and the volume of a gas at a constant temperature.
Materials:
Thin stem plastic pipette with bulb
Small Cclamp
Metric ruler (with mm)
Propane torch
Craft stick
Coloured water
Safety:
Procedure:
P (# of turns) 
V (mm) 
1/V (mm) 
P x V (turns x mm) 
0 



.5 



1 



1.5 



Etc. 



Analysis:
Quick Explanation:
The first plot should be a curved line(see below).
The second plot should be the straight line (see below).
The values of the slope of P vs. 1/V and P x V should be the same.