Stoichiometry - DLP

RepublicofthePhilippines
DepartmentofEducation
REGION X – NORTHERN MINDANAO
SCHOOLS DIVISION OF ILIGAN CITY
TOMAS CABILI NATIONAL HIGH SCHOOL - ANNEX
BAYANIHAN VILLAGE, STA. ELENA, ILIGAN CITY
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Address: Bayanihan Village, Sta. Elena, Iligan City
Telephone No.: (063) 222-0445
email: tomascabilinationalhighschoola@gmail.com
Detailed Lesson Plan
Name of Teacher: Lyndy C. Arong Date: March 29, 2019
Grade Level: Grade 11-TVL Subject Area: Physical Science
I. Objectives
At the end of the lesson, 85 % of the learners will be able to:
1. calculate the amount of substances used or produced in a chemical reaction by
using the algebraic expression (S11/12PS-IIIf-h25).
II. Subject Matter
Topic: Stoichiometry
Reference/s: Chemistry LibreTexts. July 1, 2018. StoichiometryandBalancing
Reactions.Retrieved on January 14, 2021. Retrieved from
https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/
Supplemental_Modules_(Inorganic_Chemistry)/Chemical_Reactio
ns/Stoichiometry_and_Balancing_Reactions.
Tutoring and Learning Centre, George Brown College. 2014. Calculations
with ChemicalReactions. Retrieved on January 14, 2019.
Retrieved from https://www.georgebrown.ca/uploadedFiles/
TLC/documents/Calculations%20with%20Chemical%20Reactio
ns.pdf.
Material/s: Powerpoint presentation, pictures, diagrams, figures, visual aids
Value/s: “What we give is what we receive.”
III. Procedure
A. Preparatory Activities
Teacher’s Activity Learner’s Activity
Greetings
Goodmorning,class.
Prayer
Beforewe proceedwithour lessonproper,let’s give
back all the gloryandhonorto ourGodwith a
Christianprayer,followedbya Muslimprayer.
HealthInspection
Everybody,remainstandingandlookto yourleft, and
then, to the right. If youseepieces of trash,pick it and
throwit insidethe trash bin.
Goodmorning,Ma’amArong.
Learners have Christian prayer.
Learners have Muslim prayer.
Learners look to their left and then, to
the right, and pick up pieces of trash
and throw it tothe trash bin.

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Telephone No.: (063) 222-0445
CheckingofAttendance
You maysettlenow.Is therean absent,today?
Okay, that’s good.Areyoureadyto learnand have
fun, today?
CheckingofAssignment
We don’thave anyassignment,right?
Review
Lastmeeting,we discussedabout?
Verygood.Whatis stoichiometry?
Yes, that’sright. Specifically, wediscussed
stoichiometryonwhat?
Yes, that’scorrect. But beforewe couldcalculate heat,
we must,first, balancethe coefficients of the
equation.Bythe way,what is theusualmeasureof
heat ofthe elements?
Verygood.Clapfor yourselvesclass.
Motivation
Beforewe go on to our lesson,letus first singa song.
Song
Double,doublethat,that
Double,doublethis,this
Doublethat
Doublethis
Double,doublethis,that
Now,may Irequesteverybodyto standup. Whenwe
say“double,” yourhandswouldbesideway-closed.
When wesay “that,” yourhandswouldbeopenfacing
front. Andwheneveryouhear “this,” yourhands will
be openfacing you.
Now,face your partnerandsing.
Okay, pleasesettle.In youractivity, whatdo you
notice whenyourpartnerput moreeffort on pushing?
Learners answer.
Yes, weare ready.
Yes, ma’am.
We discussedaboutstoichiometry.
Stoichiometrymeansthemeasureof
elements.
We discussedstoichiometryofheat.
Heat is usuallymeasuredinkilojoules
(kJ).
Learners clap their hands.
Learners sing.
Learners execute.
Learners execute.
I tendto pull back.

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Telephone No.: (063) 222-0445
Why do you think?
Okay, youmight hurt yourhandsthat’s why youpull
back. Now,while youextendeffort onpushingyour
partner’shands,youalso exertedenergy.Andyour
partnertendsto pull back becausehe knows that you
exertedenergy.Andwe havethisLaw of Conservation
of Energy,right?
AndLaw of ConservationofEnergystates that?
That’sright. Basically,theinitial energywouldbe
equalto the resultingenergy.Now,if yourpartner
waspushingit to its maximumpotential,then,
possiblyyoucouldbedisplacedfromyour initial
positionbecauseofenergy.But, that wouldnotlikely
to occur becausewecare for each other,right?
Verygood.
Becauseit might hurt myhands.
Yes, ma’am.
This law meansthatenergycan neither
be creatednor destroyed;rather,itcan
onlybe transformedortransferredfrom
oneform to another.
Yes, ma’am.
Learners listen attentively.
B. Developmental Activities
Teacher’s Activity Learner’s Activity
Presentation
Now,I havea picture here.
What do you observe?
Learners look at the picture.
I observethatat the start,there is a
100-gramcoal.Then,after the coalwas
burnedcompletely,theweightof the
coal is still 100 grams.

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Telephone No.: (063) 222-0445
What do you think happened?
Exactly.Since there isno escapeof anymatter, the
initial mass,thatis yourreactant, wouldbeequalto
the final masswhichis your product.This wouldgive
youthe Lawof ConservationofMass.
Settingof Standards
Fortoday’slesson,weare expectedto learnto
calculate the amountofsubstancesusedorproduced
in a chemical reactionby usingthe algebraic
expression.
Discussion
Now,here isone of theproblemsolvingtechniques.
First, listthe unknownquantityname (uqn),
unknownquantitysymbol(uqs),unknownunitname
(uun) andunknownunit symbol(uus).
uqn: uun:
uqs: uus:
AlgebraicTechnique
1. Definethe unknownvariable.
2. Interpretthe problemandwritean algebraic
statementthat leadsto the solution.
3. Solvethe algebraicstatement.
4. Write yourfinal answerin sentenceform.
SampleProblem:
What mass(g) of iron(Fe) willbe producedfrom
152.6grams of carbonmonoxideandanexcess of
iron(III) oxide?Themolarmassofcarbon monoxide
is 28.01g/molandthe molarmassof ironis 55.85
g/mol.
Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g)
Solution:Usingthe AlgebraicTechnique
uqn: mass uun: gram
uqs: m uus: g
Let m representtheunknownmassof Fe (ingrams)
producedfrom152.6g of carbon monoxide.
Theweightof the coal is conserved
becausethereis no escapeof matter.
Learners read the objectives.
Learners read the problem solving
technique.
Learners read the sample problem.

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Telephone No.: (063) 222-0445
m = 152.6 g CO x 1 mol CO x 2 mol Fe x 55.85 g Fe
28.01 gCO 3 mol CO 1 mol Fe
This is the givenmass ofCO, 152.6 g.
This is the molarmass ofCO, which 28.01 grams
per mole.
This is the ratioof Fe to CO as stated inthe
balanced chemicalequation.
This is the molarmass ofFe, which 55.85 grams
per mole.
Importantnote:Whenbuildingthe algebraic
statement,usethe unitsto guidewhich quantitygoes
where(topor bottom).Thegoalisforthe units to
cancel out so that youare left with yourdesiredunit.
m = 152.6g CO x 1 molCO x 2 molFe x 55.85g Fe
28.01g CO 3 molCO 1 molFe
m = 152.6(1) (2) (55.85) gFe
28.01(3) (1)
m = 202.8492205...gFe
Roundthe finalanswerto 4 significant digits.
m = 202.8g Fe
Therefore,202.8gof Fe will beproducedfrom152.6
g of carbonmonoxideandanexcessof iron(III)
oxide.
Do youhave anyquestionsregardingthis technique?
GroupActivity
If there are no questions,let’sproceedwitha group
activity. Youwill go to yourgroupsandyou will
answeroneassignedrelatedproblem.Youwillneed
to workcollaboratively,thus,sharingofideas is
important.If youhaveany questions,youcanraise
yourhand so that I can go to yourareato answer
Learners answer.

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Telephone No.: (063) 222-0445
yourquestions.Inthis activity,you willbe given5
minutesto answerand3 minutesto shareit to your
classmates.
Are thereany questions?Ifnone,thenlet’s proceed
with the groupactivity.
Okay! Time’sup! Let’snow haveyourpresentation.
Generalization
Learners go to their respective groups
and answer the problem
collaboratively.
Problem1
What mass (g) of NaClwill be produced
from 32.00grams of Naand an excess
of Cl? Themolarmass of Na is 22.99
g/molandthe molarmass of NaCl is
58.44g/mol.
Na(s) + Cl(s) → NaCl(s)
Problem2
What mass (g) of AlCl3 will beproduced
from 95.60grams of Aland an excess of
Cl? Themolarmass of Al is 26.98g/mol
andthe molarmass of AlCl3 is 133.33
g/mol.
Al(s) + 3 Cl(s) → AlCl3(s)
Problem3
What mass (g) of iron(Fe) willbe
producedfrom 232.0grams of carbon
monoxideandanexcess of iron(III)
oxide?Themolarmass of carbon
monoxideis 28.01g/molandthe molar
mass of ironis 55.85g/mol.
Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g)
Learners present their outputs.
Rubrics:
Criteria 3 2 1
Quality of
information
Informative,
accurate, and
show depth
understanding
Some
information is
not accurate
and show poor
understanding
Not informative
and not
accurate
Presentation
Skills
Group expertly
explain the
whole topic
Some topics are
not explained
well by group
Group unable to
explain the
topic
Visual Model Creative,
original, and
correlates well
Little creativity,
little originality
Hasty done, not
creative, no
originality

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Telephone No.: (063) 222-0445
Verygood!Fromthe resultof youractivity, youreally
get a grasponcalculating theamountof substances
usedor producedina chemical reactionby usingthe
algebraicexpression.
Valuing
Moreover,thebasicfoundationofthe chemical
equationsisthe Lawof ConservationofMass,thatis,
the productis equalto the reactant.We can relate
this in ourlife throughthe saying,“Whatwe giveis
whatwe receive.”
Assignment
Foryour assignment,researchonthecalculationof
the amountof substancesusedorproducedina
chemical reactionby usingthe step-by-step
proportiontechnique.
ClosingPrayer
To end ourclass,may I request_____ to leadthe
closingprayer.
Learners take notes of the assignment.
Learners pray.
Prepared by: Reviewed by:
LYNDY C. ARONG FE T. SIASE
Special Science Teacher I School Head

Stoichiometry - DLP

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Stoichiometry - DLP