Charles Law

1. CHARLE’S LAW

2. What will happen
to the volume of
the trapped air
inside this
container??
- increases
- decreases
-same
????

3. Relationship Between V and T
 When the temperature increases because of sun:
 The molecules move faster
 The average kinetic energy also increases
 Therefore, the molecules will push the cylinder
upward.

4. Charles’ Law
 Charles’ Law state for constant mass and pressure:
 “Volume directly proportional to its absolute
temperature”

5. Charles’ Law
 In mathematical equation:
 V = constant
T
V1 = V2
 So we can conclude: T1 T2
Must use in Kelvin

6. Experiment of heated

7. Volume against Temperature (⁰C)
Volume
O
-273⁰C 100⁰C ɵ/⁰C

8. Volume against Temperature (K)
Volume
Now we get!!
V directly proportional to
Absolute Temperature
O
ɵ/K

9. Absolute Zero Temperature
 Absolute Zero temperature can be define as
The lowest possible
temperature that is
-273 ⁰C or 0K

10. Convert Celsius to Kelvin
ɵ⁰C is equal with (ɵ + 273) K
Example:
What is 27⁰C in Kelvin??
300K

11. Lets see physics in action!!!
 Lets Watch video >>>

12. Example

13. Solution

14. Example

3
?
3
V1 V2
=
T1 T2
1.2 1.26
=
(24+273) T2
T2 = 311.85 K = 38.85 ⁰C

15. Closure
 What is the relationship between temperature with
Volume??
 What is absolute zero define as??
 What is Charles’ Law Formula??