Be SMART
1. Who was the English
scientist who made
accurate observations on
the relationship of
pressure and volume?
Robert
Boyle
2. What is the formula
or equation used in
solving problem
involving Boyle’s
Law?
3. According to Boyle’s
Law, as the pressure
exerted on a gas is
increased, the volume will
______________________.
4. In the equation
for Boyle’s Law,
V2 stands for
___________.
FINAL
VOLUME
5. What is the
value equal to the
standard
pressure?
1 atm
6. A 2.75 L sample of dry air in a
cylinder exerts a pressure of 3 atm
at 30 ˚C. without changing the
temperature, a piston is moved until
the pressure in the cylinder is
reduced to 1 atm. What is the final
volume of the gas?
Activity No. 2
TEAM + PEA + RATE + TURE
TEMPERATURE
GAS
+
LAW
GAS LAW
BALL
+
LUME
VOLUME
AT
+ MOIST + PEAR
ATMOSPHERE
PRESS
+
SURE
PRESSURE
Objectives: Investigate the relationship between volume and
temperature at constant pressure.
Materials: Erlenmeyer Flask, alcohol burner, small balloon and
ice.
Procedure:
1.Add a small amount of water to an Erlenmeyer Flask.
2.Place the flask on a hot burner.
3.Put the open end of a balloon over the opening of the flask.
4.Observe the expansion of the balloon.
5.Move the flask to an ice bath.
6.Observe the suction on the balloon.
What is your
observation on the
activity?
What do you think is
the cause why the
balloon expands?
How could hot
water be the
reason to make the
balloon inflated?
What are the
quantities involved
in this experiment?
How does the change in the
temperature relate to the
volume of gas in the
balloon?
What is Charles’
Law?
Plot each coordinate point on the
coordinate grid and connect the points
using a line.
A. (0,0)
D. (6,8)
B. (2,4)
E. (8, 10)
C. (4,6)
“directly
proportional”
Example: A syringe contains
56.11 ml of gas at 311K.
Determine the volume that the
gas will occupy if the
temperature is increased to
400K
1.A cylinder with a movable piston
3
contains 250 cm air at 10˚ C. If
the pressure is kept constant, at
what temperature would you
3
expect the volume to be 150cm ?
2. A tank contains 2.3 L of helium
gas at 25˚ C. what will be the
volume of the tank after heating it
and its content to 40˚ C temperature
at constant pressure?
3. A 20˚ C, the volume of chlorine
3
gas is 15dm . Compute for the
resulting volume if the temperature
is adjusted to 318K provided that
the pressure remains the same.
Bring out ¼ sheet of paper and
answer the following questions.
Write only the letter of the correct
answer.
1. The relationship of which two
variables are compared in Charles’
Law
a. Pressure and volume
b. Volume and temperature
c. Temperature and pressure
d. Volume and moles
2. Dionelle and Tristan are playing basketball
outside in 82˚C weather. If they leave the ball
outside and temperature drops about 53˚C, what
will happen to the volume of the gas in the ball if
the pressure remains constant?
a.Volume will remain the same
b.Volume will increase
c.Volume will decrease
d.Volume will double in size
3. At constant pressure, what happens to
temperature of a gas when the volume
doubles?
a.The temperature also doubles
b.The temperature decreases to half of its
original volume
c.The temperature doesn’t change.
d.The temperature quadruples
4. Elisa and Jiesel want to play a game of beach volleyball
If the beach ball has a volume of 400 L at a temperature of
500K, what will the temperature of the balloon be if the
volume decreases to 176 L?
a.176 L
b.500K
c.400L
d.220K
5. Charles’ Law is an experimental gas law that
describes how gases tend to expand when heated. The
law states that if a quantity of gas is held
_____________ pressure, there is a _______________relationship between its volume and the temperature.
a.Constant- direct
b.Higher- inverse
c.Greater- constant
d.Decreasing- double
Bring Charles’ Law in action by giving solution to the problem below:
BAKING. We can see Charles’ Law in our kitchen. Using a yeast as an ingredient, how is the
law applied in delicious bakery products like bread and cakes?
Rubric:
5 points- The student demonstrates a thorough understanding of the concept behind the
task.
4 points- The student demonstrates an understanding of the concept behind the task.
3 points- The student demonstrates only a partial understanding of the concept behind
the task.
2 points- The student demonstrates a very limited understanding of the concept behind
the task.
1 point- The student provides a completely incorrect solution.
0 point- No response at all.