Detailed Lesson Plan in Science Grade 10
I.
Objectives
At the end of the lesson, the learners should be able to;


Investigate the relationship between volume and pressure at a constant temperature of gas;
Calculate simple problems using equations of Boyle’s Law
Values Integration
 Relate Boyle’s Law to practical application in our daily lives.
II.
Topic and Lesson



III.
Boyle’s Law
References: Science 10 (quarter 4 module 1)
Materials: Laptop, visual aids, balloon, bottle with a hole on the side, graphing paper
Procedure
Teacher Activity
A.
1.
2.
3.
4.
5.
Pupil’s activity
Preliminary Activities
Greetings
Prayer
Checking attendance
Classroom Protocol
Review
Fact or Bluff (Properties of gas)
Say FACT If the properties being described is for GAS and
BLUFF if not.
1. Gases expand the size of their container.
NICE!
2. Gases flow easily.
Very good!
3. Gases have a definite shape and volume.
Great!
4. It has a low density
Correct!
5. Particles of Gases move in random directions very fast
traveling in a straight-line path.
Very good!
You do it well Science learner!
FACT!
FACT!
BLUFF!
FACT!
FACT
C. Motivation
Using the balloon bottle activity ask the
students the following question;
1. What causes the balloon to inflate?
Very good!
2. What do you think will happen to the
volume of the air in the balloon if we
lessen the pressure inside the bottle?
Correct!
3. What is the relation of pressure to the
volume of air/gas inside the balloon?
(Learner’s answer may vary )
All of your answers are great and it is all
about our topic GAS LAW or also Known as
Boyle’s Law .
The presence of air or air pressure.
If we lessen the pressure the volume will
increases.
As the pressure on the gas increases, the volume
of the gas decreases because the gas particles are
forced closer together. Conversely, as the
pressure on the gas decreases, the gas volume
increases because the gas particles now move
farther apart.
D. Lesson Proper
Show the picture of Robert Boyle
1. Who is the man in the picture? Where
did he become famous?
Great!
2. Who is Robert Boyle
Very Good!
Robert William Boyle. Boyle’s Law
Robert Boyle is an Irish chemist who carried out
some of the earliest experiments that determined
the quantitative relationship between the
pressure and volume of a gas.
3. What are the two variables included in
his Law?
Correct!
Pressure and Volume
4. What is the relationship of volume and
pressure at constant temperature?
Very well said!
At a constant temperature, the volume of gas is
inversely proportional to the pressure exerted by
the gas.
5. What are the unit for volume and
pressure?
Great!
Standard pressure
1 Atm = 760 torr
760mmHg
101.3kPa
Standard for Volume
1 litter=1000m𝑥 2
1000ml
6. What is the mathematical equation for
Boyle’s law?
7. How do you derive a formula from
Boyle’s Law if the initial and final volume
is missing? How do you derive a formula
from Boyle’s Law if the initial or final
pressure is missing?
(Give sample problem)
Steps to solve the problem:
1. Identify the given information and
determine what is asked in the problem.
2. Write the equation.
3. Derive the equation to solve for an unknown
quantity.
4. Substitute the known quantities into the
equation, cancel the same unit copy the
remaining unit, and calculate.
5. Think about the result whether it makes
sense or not.
Problem #1: A gas occupies 10 liters at a
pressure of 40mmHg.What is the volume when
the pressure is increased to 50mmHg?
PV=K
P1V1=P2V2
P1 = Initial pressure
V1 =Initial Volume
P2= Final Pressure
V2= Final Volume
Given:
P1= 40mmHg
V1= 10 liters
P2=50mmhg
V2=?
P1V1=P2V2
P1V1=P2V2
P2 P2
40mmHg( 10 L)=50mmHg
400mmHg/L
50mmHg
V2 =8.0 L
Problem # 2: To what pressure must a gas be
compressed in order to get into a 2.00
cubic foot tank is the entire weight of a gas that
occupies 400.0 cu.ft.at standard pressure.
Problem # 3: A gas occupies 1.5 L at 1.00 atm.
What will be the volume of its gas if the pressure
becomes 3.00 atm?
Given
P1= 1atm
V1 = 400 cubic feet
P2= ?
V2= 2.0 cubic feet
P1V1=P2 V2
V2 V2
1atm(400cu.ft.)
P2 = 200 atm
2 Cubic feet
Given:
P1= 1atm
V1=1.5L
P2=3 atm
V2=?
1atm( 1.5 L )
3atm
V2=0.5 L
Problem #4 A gas occupies 12 L at 0.5 atm. What
is the pressure if the volume becomes 5.0 L?
Given:
P1=0.5atm
V1= 12L
V2=5.0L
P2=?
0.5 atm( 12 L)
5.0 L
P2 = 1.2atm
E. Generalization
To sum it up what is the general knowledge
that you learn from Boyle’s Law?
Boyle’s law states that a volume of a gas is
inversely proportional to pressure at a
constant temperature. If the pressure
increases the volume decreases and vice
versa.
Very good!
F. Application
In a real-life situation where can we apply
Boyle’s Law Principle?
IV.Evaluation
Multiple Choice
Direction: Read and answer each
question/statement carefully. Identify what is
being described. Encircle the letter of the correct
answer.
1. According to Boyle’s Law, when the
temperature is held constant, as pressure
increases volume _______?
a. Decreases
c. increases
b. Stay the same
d. does not apply
2. Volume and temperature have a/an ____
Proportion.
a. Direct
c. inverse
b. Equal
d. cannot determine
3. Which of the following equation is for
Boyle’s Law?
a.P1/T1=P2/T2
c. P1V1=P2V2
b. V1n1=V2n2
d. V1/T1=V2/T2
4. Which of the following does Boyle’s Law
apply?
a. Bicycle tire
b. hot air balloon
c. Pressure Cooker
d. none of the above
a. Decreases
d . Cannot determine
c . P1V1=P2V2
a. Bicycle tire
5. A tank of He has an initial volume of 10mL
at a pressure of 20atm. What would be the
final volume of the gas if the pressure is
increased by 30atm
a. 5.67 mL
c. 8.67mL
b. 6.67 mL
d. 10.6 mL
VI.Assignment
Answer the following questions.
1. What is Charles Law?
2. What are the variables included in this
law?
3. What is the mathematical equation for
Charles Law?
Reference:
Science 10 (Quarter 4-Module 1 )
Prepared by: Marisol M. Landayan
b. 6.67mL