Republic of the Philippines
Department of Education
Region III-Central Luzon
Schools Division Office of Pampanga
BETIS NATIONAL HIGH SCHOOL
GUAGUA, PAMPANGA
School
DETAILED
LESSON
PLAN
Teacher
Teaching Date
and Time
Betis National High School
Grade Level
10
Chienee Besinio Causo
Learning Area
Science
May 26, 2022
8:10-9:10 AM
Quarter
Fourth (4th)
I. OBJECTIVES
A. Content Standard
B. Performance Standards
C. Learning Competencies & Code
The learners demonstrate an understanding of…
 how gases behave based on the motion and relative distances between
gas particles
The learners shall be able to demonstrate understanding of the gas laws.
The learners should be able to investigate the relationship between:
1. volume and pressure at constant temperature of a gas
S9MT-IIJ-20
Properties of Gas – Boyle’s Law
II. CONTENT
III. LEARNING RESOURCES
A. References
1. Teaching Guide
2. Leaners’ Material/ Textbook
3. Additional Materials from LR
portal
B. Other Learning Resources
IV. PROCEDURES
A. Reviewing previous lesson or
presenting the new lesson
B. Establishing a purpose for the
lesson
Science and Technology (Teacher’s Guide) 10 Abiva Book pages 104 - 106
Authors: Gerona Nueva Espana - Sinugbuan - Lansangan - Calamlam
Exploring Life through Science Series 10 (Laboratory Manual) pages 18-19
Authors: Josefina Ma. Pavico et. al
ID: 15501
https://owlcation.com/
https://sciencenotes.org/boyles-law-example-calculation/
ELICIT:
Students will be having an activity entitled: “The Magic Marshmallow
Experiment”
Guided questions:
 What happen to the size of the marshmallow as the plunger being press
and released repeatedly?
 How do you describe the volume of the marshmallows inside the syringe as
the pressure increases?
 How do you describe the volume of the marshmallows inside the syringe as
the pressure decreases?
ENGAGE:

C. Presenting examples/ instances of
the new lesson
(The teacher will show the picture of Robert Boyle) The teacher will ask
any of Robert Boyle’s contribution in Science especially in Chemistry.
The teacher will show and discuss some of Robert Boyle's contribution in
the field of Science especially in Chemistry that we’re using in our daily
lives.
EXPLORE:

D. Discussing new concepts and
practicing new skills #1
E. Discussing new concepts and
practicing new skills #2
What is boyle’s law?
 Boyle’s law is a gas law which states that the pressure exerted by a gas
(of a given mass, kept at a constant temperature) is inversely
proportional to the volume occupied by it. In other words, the pressure
and volume of a gas are inversely proportional to each other as long as
the temperature and the quantity of gas are kept constant. Boyle’s law
was put forward by the Anglo-Irish chemist Robert Boyle in the year
1662.
 For a gas, the relationship between volume and pressure (at constant
mass and temperature) can be expressed mathematically as follows.
P ∝ (1/V)
Where P is the pressure exerted by the gas and V is the volume
occupied by it. This proportionality can be converted into an equation by
adding a constant, k.
P = k*(1/V) ⇒ PV = k
The pressure v/s volume curve for a fixed amount of gas kept at constant
temperature
Formula and Derivation
As per Boyle’s law, any change in the volume occupied by a gas (at
constant quantity and temperature) will result in a change in the pressure
exerted by it. In other words, the product of the initial pressure and the
initial volume of a gas is equal to the product of its final pressure and
final volume (at constant temperature and number of moles). This law
can be expressed mathematically as follows:
F. Developing mastery (leads to
Formative Assessment)
P1V1 = P2V2
Where,
P1 - is the initial pressure exerted by the gas
V1 - is the initial volume occupied by the gas
P2 - is the final pressure exerted by the gas
V2 - is the final volume occupied by the gas
EXPLAIN:
 The teacher will discuss that Boyle’s Law states that relationship
between volume and pressure of a gas is inversely proportional which
means if the Volume of a gas DECREASES; the Pressure of the gas
will INCREASE, and vice versa as long as the temperature does not
change. In mathematical equation form, this can be represented as:
P1V1 = P2V2
Example:
A sample of nitrogen gas (N2) has a volume of 12.0 L and a
pressure of 760.0 mm Hg. When the gas is released, it gives 32.0 L of
nitrogen. If the temperature is the same, what is the new
pressure of nitrogen?

Given
P1 = 760.0 mm Hg
V2 = 32.0 L
V1 = 12.0 L
P2 = ?

Derived the equation for P2 using Boyle’s law (P1V1 = P2V2)
P2 =
P1V1
V2
Solution
P2 = 760.00 mm Hg x 12.0 L
32.0 L

= 285 mm Hg
Another problem:
A gas tank holds 20.0 L of oxygen (O2) at a pressure of 15.0 atm. How many
liters will gas occupy if the pressure is changed to 0.800 atm at constant
temperature?

Given
P1 = 15.0 atm
P2 = 0.800 atm
V1 = 20.0 L
V2 =?

Derived the equation for V2 using Boyle’s law (P1V1 = P2V2)
V2 = P1V1
P2

Solution
atm x 20.0 L
V2 = 15.0
0.800 atm
= 375 L
ELABORATE:
G. Finding practical applications of
concepts and skills in daily living
Where can we apply Boyle’s Law in real life situation?
 Boyle’s Law can be applied in real life situation like drinking soda in a
can. When you shake a soda in a can before opening it, you will notice
that its volume will decrease for it will spill due to the increase in
pressure.
 When we inhale, the diaphragm moves downward and ribs up and
out, increasing the volume of the chest cavity and thus decreasing the
pressure. When we exhale the diaphragm moves upward and the ribs
down and in, decreasing the volume of the chest cavity and thus
increasing the pressure.
 “Love everything about life. The downs make the ups happier”
(Romans 8:18)
In life, like the principle behind Boyle’s Law. Even though we experience
inversely proportional circumstances, even if the problem increases and
the self-esteem decreases. We have to be strong and never give up.
Because at the end of the day God will make something greater than
what you’ve expected.
SUMMARY of THE LESSON:
H. Making generalizations and
abstractions about the lesson
 The proponent of Boyle’s Law is Robert Boyle.
 The properties of gas involved in Boyle’s Law are pressure and volume
 The relationship of volume and pressure is inversely proportional
 The basic equation in Boyle’s Law: P1V1=P2V2
 Boyle’s Law states that, “As pressure increases, volume decreases at
constant temperature and vice versa.’’
 Volume of a gas is inversely proportional to its pressure, when the
temperature and amount of gas are constant.
I.
EVALUATE: Use Boyle’s Law to solve the following problems.
Evaluating learning
1. 352mL of chlorine under a pressure of 680 mmHg are placed into a container
under a pressure of 1210 mmHg.. What is the volume of the container?
J.
Additional activities for application or
remediation
2. A balloon with a volume of 2.0 L is filled with a gas at 3 atmospheres. If the
pressure is reduced to 0.5 atmospheres without a change in temperature, what
would be the volume of the balloon.
EXTEND:
For this problem the Initial Volume is V1 = 7.2L. We are asked to find the
Initial Pressure (P1). The Final Pressure is P2 = 2.00atm and the Final Volume
is V2 = 25.1L.
Prepared by:
CHIENEE B. CAUSO
Subject Teacher
Checked by:
NIDA AGUAS
Head Teacher II
Noted by:
ELOISA C. LUSUNG
Principal III