Gas Laws: Boyle’s and
Charles’ Law
At the conclusion of our time together,
you should be able to:
1. Describe Charles’ Law with a formula.
2. Use Charles’ Law to determine either a
temperature or volume
Charles’ Law – Page
11
If n and P are constant,
then V α T
V and T are directly
proportional.
V1 V2

T1 T2

If one temperature goes
up, the volume goes up!
Jacques Charles
(1746-1823). Isolated
boron and studied
gases. Balloonist.
Charles’s Original Balloon
Modern LongDistance Balloon
Charles’ Law Summary
The volume of a gas is directly
proportional to temperature, and
extrapolates to zero at zero Kelvin.
(P = constant)
V1 V2

T1 T2
Charles’ Law – Page 11
Example – Page 12
V1
V2
T1
T2
Charles’ Law Practice – Page 12 #2
V1
V2
T1
T2