Lesson Plan in Jan. 13 Mole Concept Grade 9

Republic of the Philippines
Department of Education
REGION VIII – EASTERN VISAYAS
SCHOOLS DIVISION OF CATBALOGAN CITY
SAMAR NATIONAL SCHOOL
Catbalogan City
Date: January 13, 2023

Section: G9-Talisay & Pinetree
DETAILED LESSON PLAN IN SCIENCE 9

QUARTER 2
Content Standard:
The unit, mole, that quantitatively measures the number of very small particles of matter
Performance Standard:
Analyze the percentage composition of different brands of two food products and decide
on the products’ appropriate percentage composition.
I. OBJECTIVE:
A. Most Essential Learning Competency

Use the mole concept to express mass of substances; (S9MT-IIi-19).
B. Instructional Objectives:
1. Apply the mole concept in completing a given set of data.
2. Apply the mole concept to represent particles and vice versa.
3. Display cooperation and teamwork in performing the activity
II. SUBJECT MATTER
Topic: Mole Concept
KBI: Show cooperation in activities
III.Learning Resources
A. Materials: Chalk, Blackboard, Pictures

B. References: Grade 9 Science Learner’s Module pages 262-276
Grade 9 Science Teacher’s Material pages 306-314
IV. PROCEDURE
A. Drill/Elicit
Review of the previous lesson about the Relationships among Number of Moles and
Number of Particles.
Yesterday you have learned the connections and relationships among the mass,
number of moles and the molar mass of some substances. You can easily figure out its
amount in terms of its mass, the number of moles and the number of particles.
Can you state the relationship between the following properties?

a. Mass and number of moles
b. Number of moles and number of particles
B. Engage
Solve problems converting:
 The number of particles to mass and vice versa;
 Number of moles to mass and vice versa; and
 Number of particles to number of moles and vice versa.
C. Explore
Discuss what to remember when performing the activity.
Activity: The Chemist’s Mole
Materials
 Periodic Table
Procedure
1. Complete the table with the needed information
Table: Molar Relationships
Q1. When is a particle classified as an atom, a molecule, or a formula unit?

Q2. Show how you will convert the mass of a given sample to number of moles and vice
versa.
Q3. Show how you will compute for the number of particles given the following: Mass of
the sample and Number of moles of the sample.
D. Explain
Activity: The Chemist’s Mole
Table: Molar Relationships
Q1. When is a particle classified as an atom, a molecule, or a formula unit? A particle is

called an atom when it represents an element; molecule when it represents a molecular
compound (CO2, CH4, H2O and other compounds alike) and elements (N2, O2, H2,
and other diatomic molecules; and formula unit when it represents ionic compounds
(NaCl, CaF2, KCl)
Q2. Show how you will convert the mass of a given sample to number of moles and vice
versa. Mass divided by the molar mass is equal to the number of moles.
Q3. Show how you will compute for the number of particles given the following: Mass of
the sample and Number of moles of the sample.
 Mass of the sample
 Number of moles of the sample

Presenting the formula in the above-cited manner will help the learners
understand how the cancellation of units takes place and how it is converted to
the other unit.
E. Elaborate
The teacher will proceed to the discussion of the lesson.
Understanding this concept gives you an idea of how many molecules of vitamins and
or medicines are introduced inside our body. Given the mass, you also have a clearer
idea of how many molecules of pollutants are produced and released in the
environment due to human activities though your unaided eyes cannot see them.
1. How do you convert the following:

 The number of particles to mass and vice versa;
 Number of moles to mass and vice versa; and
 Number of particles to number of moles and vice versa.
2. What subject area can you apply our topic to?
F. Evaluate
Direction: Solve the problems below:
1. Cancer patient needs to increase his ascorbic acid (C6H12O6) intake to fight
cancer cells. a) How many moles of ascorbic acid does he need to complete
the doctor’s prescription of 13.00g of intravenous ascorbic acid every day for
one month? b) How many molecules of ascorbic acid does he need every day
to fight the cancer cells?
2. During exercise, lactic acid (C3H6O3) forms in the muscles causing muscle
cramp. If 5.0 g of lactic acid (C3H6O3) concentrate in your leg muscles, how
many moles of lactic acid (C3H6O3) is causing you pain?
G. Extend
Directions: Test your understanding about the mole concept by answering the
following problems.
1. Aspartame (C14H18N2O5) is synthetic table sugar substitute in food and

drinks. If a food product needs 0.25 g of C14H18N2O5 to sweeten the
Chemitria cupcake, and you ate this food product, how many molecules of
aspartame have you eaten?
2. Paraffin (C22H46) is a wax used in candle making. During combustion, a 20.0
g candle produces 1.42 moles of CO2. How many molecules of CO2 are
released in the atmosphere after using the candle?
V. Remarks
VI. Reflection
Prepared by:
EDESSA D. MASINAS
SST I
NOTED:
BRIGIDA C. SINGZON
Science Head Teacher

Lesson Plan in Jan. 13 Mole Concept Grade 9

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Republic of the Philippines

Date: January 13, 2023

DETAILED LESSON PLAN IN SCIENCE 9

A. Most Essential Learning Competency

A. Materials: Chalk, Blackboard, Pictures

Can you state the relationship between the following properties?

Activity: The Chemist’s Mole

Table: Molar Relationships

Q1. When is a particle classified as an atom, a molecule, or a formula unit?

Q1. When is a particle classified as an atom, a molecule, or a formula unit? A particle is

 Number of moles of the sample

The teacher will proceed to the discussion of the lesson.

1. How do you convert the following:

1. Aspartame (C14H18N2O5) is synthetic table sugar substitute in food and

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