B

GRADES 1 to 12 School:
ORING NATIONAL HIGH SCHOOL
Suawan High School Grade Level: 11
DAILY LESSON LOG Teacher: . Jane en B. Josol Learning Area: Physical Science
MELC BASED Teaching Dates and
Time: Feb. 26- March 1, 1024 (12:30-1:30 Quarter: 3

MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY

Pamantayang Pangnilalaman The learners demonstrate understanding of.1. the formation of the elements during the Big / Bang and during stellar evolution 2. the distribution of the
(Content Standards) chemical elements and the isotopes in the universe / 1. how the uses of different materials are related to their properties and structures 2. the relationship
between the function and structure of biological macromolecules / 1. the following aspects of chemical changes: a. how fast a reaction takes place b. how
much reactants are needed and how much products are formed in a reaction c. how much energy is involved in a reaction 2. how energy is harnessed / The
properties and mode of action of the following consumer products: a. cleaning materials b. cosmetics
Pamantayan sa Pagganap The learners should be able to..make a creative representation of the historical development of the atom or the chemical element in a timeline make either a
(Perfomance Standards) poster, a flyer, or a brochure on a product(such as fuels, household, or personal care products) indicating its uses, properties, mode of action, and
precautions

Pamantayan sa Pagkatuto determine if a molecule is polar or nonpolar given its structure (S11/12PS-IIIc-15).
(Learning Competencies) relate the polarity of a molecule to its properties (S11/12PS-IIIc-16).
Layunin
Lesson Objective
Objective: Objective:
● Understand the Objective: Objective: ● Understand the Objective:
relationship ● Understand the ● Understand the relationship between ● Understand the
between relationship various factors that molecular polarity
contribute to the relationship
electronegativity between molecular and the physical and
polarity of between molecular
values and the shape and chemical properties
molecules. polarity and the
polarity of molecular polarity. of substances.
solubility of
molecules. ● Learn how to ● Learn how to substances.
● Learn how to determine predict molecular ● Learn how to
calculate the molecular polarity polarity based on
molecular structure predict the
electronegativity based on the
and composition. solubility of
difference to arrangement of
molecules based on
determine atoms and lone
their polarity.
molecular polarity. pairs.
Materials:

Paksang Aralin Determining Molecular Molecular Shape and Factors Affecting Introduction to Molecular Solubility and Molecular
(Subject Matter) Polarity through Molecular Polarity Polarity and Properties
Polarity Polarity
Electronegativity

Kagamitang Panturo Materials: Materials: Materials: Materials:

(Learning Resources) Materials:
● Molecular models ● Whiteboard or ● Whiteboard or ● Whiteboard or
● Periodic table
(optional) chalkboard chalkboard chalkboard
● Whiteboard or
● Whiteboard or ● Markers or chalk ● Markers or chalk ● Markers or chalk
chalkboard
chalkboard ● Worksheet 4 (see ● Worksheet 1 (see ● Solubility chart
● Markers or chalk
● Markers or chalk below) below) (optional)
● Worksheet 2 (see
● Worksheet 3 (see ● Worksheet 2 (see
below)
below) below)

Pamamaraan
(Procedure)
a. Reviewing Previous Begin the lesson by Begin the lesson by Begin the lesson by
Lesson or Presenting the reviewing the concept of introducing the concept of reviewing the concept of Begin the lesson by
New Lesson Begin the lesson by
molecular shape and its molecular polarity and molecular polarity. Remind reviewing the concept of
reviewing the concept of
influence on molecular briefly reviewing the students that a molecule is molecular polarity and its
electronegativity and its
polarity. Remind students factors that contribute to it. considered polar if it has an relationship to solubility.
significance in determining
that the arrangement of Explain that molecular uneven distribution of Explain that polar
the polarity of molecules.
atoms and lone pairs polarity is influenced by charge due to differences in substances tend to dissolve
Remind students that
affects the distribution of several factors, including electronegativity between in polar solvents, while
electronegativity values are
charge within a molecule. electronegativity, its constituent atoms. nonpolar substances
assigned to elements on the
molecular shape, and the dissolve better in nonpolar
periodic table.
presence of lone pairs. solvents.

b. Establishing purpose for Display the periodic table Discuss different molecular Discuss each factor in Discuss the impact of Discuss the structure of
the lesson and explain that geometries, such as linear, more detail, highlighting molecular polarity on water molecules and its
electronegativity values bent, trigonal planar, its role in determining the physical properties such as significance as a polar
increase from left to right tetrahedral, and trigonal overall polarity of a boiling point, melting point, solvent. Emphasize the
across a period and pyramidal. Explain how molecule. Emphasize that and solubility. Explain that importance of hydrogen
decrease from top to the presence of lone pairs all factors need to be polar molecules tend to bonding and the ability of
bottom within a group. can distort these shapes considered together to have higher boiling and water to interact with polar
Discuss how this trend and lead to molecular make an accurate melting points and are more molecules.
affects the distribution of polarity. determination. likely to dissolve in polar
electrons in a molecule. . solvents.
c. Presenting Draw Lewis structures of Draw Lewis structures of Draw Lewis structures of
Draw Lewis structures of Draw Lewis structures of
example/instances of several molecules on the several molecules on the several polar and nonpolar
the new lesson
several molecules on the several polar and nonpolar
board, such as HF, HCl, board, such as H2O, CO2, board, such as H2O, CO2, molecules on the board,
substances on the board,
HBr, and HI. Explain that NH3, and CH4. Emphasize NH3, and CH4. For each such as H2O, CO2, CH4,
such as NaCl, CH3OH,
the electronegativity how the arrangement of molecule, discuss the role and NH3. Discuss the
C6H14, and CO2. Discuss
difference between the atoms and lone pairs of electronegativity, differences in physical
the solubility of these
bonded atoms determines affects the overall polarity molecular shape, and the properties between these
substances in water and
the polarity of the of the molecule. presence of lone pairs in molecules and explain how
other solvents based on
molecule. For example, in determining its polarity. their polarity affects their
their polarity.
HF, fluorine is more behavior.
electronegative than
hydrogen, resulting in a
polar molecule.

d. Discussing new concepts Introduce the concept of Present a few examples of Introduce the concept of
If available, use molecular If available, present a
electronegativity difference models to demonstrate the molecules that defy the intermolecular forces and solubility chart or conduct
and how it is calculated. three-dimensional shapes general trends and require how they are influenced by a demonstration to
Instruct the students to of molecules and their a more nuanced analysis. molecular polarity. Explain illustrate the solubility of
subtract the polarity. Show examples of Discuss how exceptions to that polar molecules can different substances in
electronegativity value of polar and nonpolar the general rules can arise engage in stronger water. Show examples of
the less electronegative molecules using the due to unique structural intermolecular attractions, both polar and nonpolar
atom from the value of the models. characteristics or the such as dipole-dipole compounds and explain the
more electronegative atom. presence of multiple polar interactions or hydrogen underlying reasons for their
Emphasize that a bonds. bonding, compared to solubility or insolubility.
difference greater than 0.4 nonpolar molecules.
is generally considered
polar, while a difference
less than 0.4 is typically
nonpolar.

e. Continuation of the Provide a few examples Provide a detailed Hand out Worksheet 4 to Facilitate a class discussion Explain the concept of
discussion of new and guide the students explanation of the VSEPR the students and explain on the impact of molecular "like dissolves like" to the
concepts through calculating the theory (Valence Shell the instructions. The polarity on chemical students. Discuss how
 worksheet should contain a properties, such as reactivity
Electron Pair Repulsion variety of molecules, and and solubility in specific substances with similar
electronegativity
theory) and how it helps the students need to predict chemical reactions. Provide polarities tend to dissolve
difference. Ensure they
determine molecular shape. whether each molecule is examples to illustrate how in each other, while
understand the process and
Discuss the importance of polar or nonpolar based on the presence or absence of substances with different
can apply it to other
lone pairs in predicting the a combination of factors. polar bonds can affect a polarities are less likely to
molecules.
polarity of a molecule. molecule's chemical mix.
behavior.

f. Developing Mastery Distribute Worksheet 2, Distribute Worksheet 1 to

which contains a series of Hand out Worksheet 3 to the students and explain the Distribute Worksheet 2 to
molecules. Instruct the the students and explain instructions. The worksheet the students and explain
students to calculate the the instructions. The should contain a series of the instructions. The
electronegativity difference worksheet should include a statements about the worksheet should contain a
for each molecule and series of molecules, and the properties of different series of substances, and
determine whether it is students need to determine molecules. The students the students need to predict
polar or nonpolar. whether each molecule is need to determine whether whether each substance is
polar or nonpolar based on each statement is true or soluble or insoluble in
its structure and shape. false based on the polarity water based on its polarity.
of the molecule.

g. Finding practical Allow time for the students Allow time for the students
applications of concepts Give the students time to Allow time for the students Allow time for the students
to complete the worksheet to complete the worksheet
and skills in daily living complete the worksheet to complete the worksheet to complete the worksheet
independently. Walk individually. Walk around
independently. Circulate individually. Walk around individually. Walk around
around the classroom to the classroom to provide
the classroom to assist and the classroom to provide the classroom to provide
provide assistance and assistance and clarification
clarify any questions. assistance and clarification assistance and clarification
clarification as needed. as needed.
as needed. as needed.

h. Making generalizations Review the answers as a Review the answers as a Review the answers as a Review the answers as a Review the answers as a
and abstractions about class, discussing any class, discussing any class, discussing any class, discussing the class, discussing any
the lesson challenging examples or challenging examples or challenging examples or rationale behind each challenging examples or
student questions. student questions. student questions. statement and the student questions. Use the
Encourage students to relationship between solubility chart or
 explain their reasoning molecular polarity and examples from the
behind their predictions. properties. demonstration to reinforce
the concepts.

i. Evaluating learning Conclude the lesson by Summarize the key points

summarizing the key of the lesson, emphasizing
factors that contribute to the impact of molecular
molecular polarity and polarity on both physical
Conclude the lesson by emphasizing the and chemical properties. Conclude the lesson by
summarizing the key importance of considering summarizing the key points
concepts and highlighting multiple factors together. Worksheet 1: Molecular of the relationship between
Summarize the key points
the relationship between Polarity and Properties molecular polarity and
of the lesson, emphasizing
electronegativity values, Worksheet 4: Factors For each statement below, solubility.
the relationship between
electronegativity Affecting Molecular determine whether it is true
molecular shape, lone
difference, and molecular Polarity or false based on the Worksheet 2: Solubility
pairs, and molecular
polarity. For each molecule below, polarity of the molecule. and Molecular Polarity
polarity.
predict whether it is polar 1. Polar molecules For each substance below,
Worksheet 2: or nonpolar based on a generally have predict whether it is
Worksheet 3: Molecular
Electronegativity and combination of factors. higher boiling points soluble or insoluble in
Shape and Polarity
Molecular Polarity 1. H2O than nonpolar water based on its polarity.
For each molecule below,
For each molecule below, 2. CO2 molecules. 1. NaCl
determine whether it is
calculate the 3. NH3 2. Nonpolar molecules 2. CH3OH
polar or nonpolar based on
electronegativity difference 4. CH4 are more likely to 3. C6H14
its structure and shape.
and determine whether it is 5. SO2 dissolve in polar 4. CO2
1. H2O
polar or nonpolar. 6. PF5 solvents. 5. HCl
2. CO2
1. HF 7. SF6 3. Polar molecules can 6. C2H6O
3. NH3
2. CO2 8. PCl5 engage in dipole- 7. C8H18
4. CH4
3. H2S dipole interactions. 8. NH3
5. SO2
4. O2 4. Hydrogen bonding
6. PF5
5. NH3 can occur in
7. SF6
6. CH4 nonpolar molecules.
8. PCl5
7. HCl 5. The reactivity of a
8. CCl4 molecule is not
affected by its
polarity.
j. Additional activities for
application or
remediation
REMARKS

REFLECTION

a. Number of learners
who earned 80% of
the evaluation
b. Number of learners
who require
additional activities
for remediation who
scored below 80%
c. Did the remedial
lesson work?
d. Number of learners
who have caught up
with the lesson
e. Number of learners
who continue to
require remediation
f. What difficulties did
I encounter which
my principal or
supervisor can help
me solve?
g. What innovation or
localized materials
did I use/discover
which I wish to
share with other
teachers?