The document provides information about a classroom activity on mechanics involving puzzles and hidden messages. It also outlines the learning objectives and key points of Charles' Law of gas, including the formula, examples of using the law to relate volume and temperature, and sample problems applying the law. It discusses the importance of understanding Charles' Law for today's students.

3. April 26,2022

7. of

8. Mechanics:
 The teacher will group the class into 4 (5 members
each).
 He will give pieces of puzzle in each group and they are
task to solve the puzzle. They must unlock the hidden
message found at the back of each puzzle piece after
which, they must paste it on the board
 The First group to unlock the message wins the game.
Goodluck!

10. Learning Objectives:
At the end of a 60 minute discussion, you will be able to;
a. State Charles's Law of Gas;
b. Give the mathematical formula involve in Charles’s law
c. Apply Charles’s Law in real life situation.
d. Solve problems involving Charles’s law of gas.
e. Appreciate the importance of Charles’s Law in one’s life.

11. k
T
V

V
T
Charles’ Law
Volume
(mL)
Temperature
(K)
V/T
(mL/K)
40.0 273.2 0.146
44.0 298.2 0.148
47.7 323.2 0.148
51.3 348.2 0.147

12. k
T
V

V
T
Charles’s Law
The volume and absolute temperature (K) of a
gas are directly related
• at constant mass & pressure
Jean Jacques
Charles

14. Guide Questions!
What happens to the rubber as we
continue heating up the air molecules?
What conclusion can you make based
from the experiment?

15. Charles’s Law
Changing 0C- K Scale
K= 0C + 273

16. Examples
What is the absolute temperature of a gas in
Kelvin if it is 250C?
= 298
What is the temperature of a gas in Kelvin if
it is in -500C?
= 223

17. Charles’s Law in 2 sets of conditions
𝑉1
𝑇1
=
𝑉2
𝑇2

18. Sample Problems involving Charles’s Law
 A balloon initially has a volume of 0.4L and a
temperature of 200C. What will be the volume
of the balloon after it is heated at 2500C?

19. #2
A balloon has a volume of 3.0L at
270C. What is its temperature if it
expands to 6.0L?

20. Some Applications
of
Charles’s Law

25. As a student of today’s
generation, how important
is understanding the
concept of Charles’s Law
of Gas?

26. Let’s Practice!!!
Rubrics:
Given- 3pts
Unknown- 1 pt.
Solution and Answer- 6pts
Total- 10 pts.
If you inhaled 5 Liters of air at a temperature of
270C, what would be the volume of the gas if it
heats to 400C in your lungs?

27. Agreement !
Rubrics:
Given- 3pts
Unknown- 1 pt.
Solution and Answer- 6pts
Total- 10 pts.
A balloon when cooled to 330C has a
volume of 120mL. What is the initial
temperature in Kelvin of a 200 mL
balloon?

28. Mabbalo! Ta
Nikamu 