Physical and Chemical Change

1. Pamantasan ng Lungsod ng Pasig
Alkade Jose St., Kapasigan, Pasig City
College of Education
Lesson Plan in Science
Grade V
I. Objective:
at the endof the period,the pupilsshouldbe able to:
1. describe changeshappeninginacertainmatter
2. compare the characteristicsof physical change andchemical change
3. classifythe changeshappenedtothe object,if itisphysical orchemical change
4. showwillingnesstohelpeachmembersonassignedgroupactivities
II. SubjectMatter:
ChangesinMatters
Values: Beingobservanttothe changeshappeninginourEnvironment
III. Materials:
Chart
Visual Aids
Paraphernalia(variables)
- Matches
- Papers
- Piecesof the matches’part
- Burnedmatch
- Cut papers
- Burnedpapers
IV. Procedure:
A. Motivation:
Teacher’sActivity Pupils’ Activity
Good Morning!
Please observeyoursurroundingsandany
piecesof messyousee putit onthe trash,and
alignedyourchairsproperly.
VeryGood!You may nowbe seated.
Last weekwe discussed all aboutmatter.May
I knowwhocan recall what matteris?
Good MorningSir!
(pickingpiecesof paperoranydirt andaligningthe
chairs)
(pupilswillbe ontheirseat)
Student#1:matteris anythingthathas massand
takesup space

2. Another?
VeryGood
Please give them3claps
Before we startto our lessontoday,Iwould
like togroupyou into two (2).Firstgroup are on
my leftside andthe secondgroupwill be onmy
rightside.Youmay nowgroup yourselveswhile
youare singing“The more we get together...”and
simultaneouslymake awide circle onyourgroup’s
place.
I have here samplesof twoobjectconverted
intotwo differentforms.
I wouldlike youtoobserve changeshappened
by comparingitinterms of size,colorand texture.
Understood?
In groupone,the task will be Matchesonits
original composition,BurnedandBroke into
pieces.
In grouptwo,will be Papersonitsoriginal
composition,BurnedandTear intopieces
You may start now!
Student#2:Matter is anything,suchasa solid,liquid
or gas that has massand occupiesspace.
(unitingeverygroupwill singing“The more we get
Together”)
“The more we gettogether,together,together.The
more we get togetherthe happierare we.
Andyour friendsare myfriendandmyfriendsare
your friends
The more we gettogetherthe happierare we.”
(Listening)
Yes,Sir!
(Listening)
(StartingtheirworkandsharingIdeas)
Answer to the group activity
characteristics Group 1 Group 2
Matches Paper
Break into pieces Burned Tear into pieces Burned
size smallerthan to
the original size
powderedor
transformedinto
itssmallestform
or it became ashes
smallerthanthe
normal paper
ashes-like size
color same color from
itsthe original
colorblack same as the original colorblack withthe
touch of gray
texture same as the
original rough
rougher same as the first
objectsmooth
easilytear

3. Okay,Time isup.
Please stopwritingand postall yourwork on
the board.
Choose two representativestoexplainwhat
youhave observed.
VeryGood.
Please give Group1 an ANGEL CLAP.
VeryGoodalso.
Give Group 2 an OISHICLAP.
(everygroupwill posttheirworksonthe board)
Group 1 Rep.:
The matchesthat broke intopieceshave smallersize
compare to itsoriginal formbutsame color and
texture.Onthe otherhand,the burnedmatchesare
veryfar fromits characteristicsintermsof size,color
and texture fromthe original.Itgetspowdery,color
blackand rougher.
(Clap) 1 2 3
(Stampyourfeet) 1 2 3
(make a Halo) Angel...
Group 2 Rep.:
The paperswere cut intopiecesbutalsosame color
and texture asthe original.But,onthe burned
papersit became ashes.Colorblackandwhenyou
holdit,it easilydestroy.
(Clap) 1 2 3
(Stampyourfeet) 1 2 3
Oishi...
B. Presentation:
You all have verygoodanswerand your
answersare much closedtoeach otherbut
differentvariables.
In Group One,Matchesand inGroup Two
Paper.
A while ago,twoof your classmate defines
whatmatter is,and one of themanswerthat
matterhas itsstates.
Who can give me one state?
Another?yes
and lastone.
Verygood,please give them 4claps
(Listening)
Student#1:Solid
Student#2: Liquid
Student#3: Gas
Class:4x clap

4. Andmattersmay alsochange.
Changesinmattermay occur whena force or
energyapplied inanobject.
For example (getapiece of paper)
I will tearthispaperintopieces.
What changeddidyounoticed?
Verygood.The size,itbecame smallerthan
the original
AndWhy do youthinkso?
Verywell said
I tear itwithmy twohands,it will neverbe
tearingintopiecesuntil someone or
somebodywill doright?
How aboutthe lightedmatches,what
changeddidyounoticed?
Okayanother. How aboutthe color?
Verygood,and last
VeryGoodpupils.
Give yourselvesaYES CLAP.
What we didearlier(MatchesandPapers
activity) undergochanges,
Andmay be classifiedintoPhysical or
Chemical change.
(listening)
Student#1:it became smaller.
Student#2:because youexertedforce forittobe
transformedinto pieces.
Student#1:it became ashes
Student#2:the color became black
Student#3:became rougherbecause of itssize.
(Clap) 1 2 3
(Stampyourfeet) 1 2 3
YES...
Physical Change Chemical Change
- An objectmaychange inform but
not inthe kindof moleculesithas
- The moleculesof anobject
changedintoanotherkindof molecules
and a new substance withnew properties
isformed.
Examples:
logschangedintowoodchips
Examples:
rust inirons

5. a fruitslicedintopieces
bigrocks change intosmall rocks
waterchange intoice
ice or water intowatervapour
ice intowater
tear paper
burnedobject
spoiledfood
Whenwe say Physical Change, the internalmake-
up of the object(molecules) staysthe same,even
afterthe change — onlyitsform changes.
Justlike the paperI tear intopieces.Onlythe size
and shape changedbutnot itsinternal component.
Physical Change isalsocalledReversible change
where inthe resultingelementcanbe opposite into
the objectbefore.Changesthatcanbe reversed.
Take a lookat thischange.
What state of matterthe ice is?
Verygood.
Andwe all knowthat when we put the ice intoa
hotterplace it melts.Butthe compositionof the ice
isthe same as the water,onlythat itchangesit
form.Understood?
Do youthinkwe bringback the waterintoitsearlier
form?How?
(Listening)
(Listening)
Student#1:Solid
Class:Yes.
Student#1: Yes,we can putit on the colderplace
such as refrigerator.

6. OkayVeryGood.
Andwhenwe say Chemical Change, the internal
make-up(molecules) of the objectchanges.
Unlike aphysical change,chemical changescannot
be reversed.Changesthatcannotbe reversedare
calledNon-reversible Change.We cannotbringit
back to itsoriginal form.
Everyday, we experience chemical changesin
manythingsaroundus.
How aboutyou.
What youhave noticedto the burnedmatches
fromactivity.
Okay,youmay be seated.
Thinkof the drywoodin the fireplace.Whenwe
lightthe woodup,it burnsgentlyandaftera while
it turnsintoashes.Asit burns,itproducesheat,
lightandsmoke whichescapesthroughthe air.The
heat,light,fire andsmoke are all good
characteristicsof a chemical reaction,whichresult
ina completely new matter—ashes.
Note that the ashesfromthe burningwoodhave an
entirelynewmolecularcomposition.Itcannever
be turnedback intowoodagain.
Understood?
Okayhere are the otherexample of Physical change
(Callingthe studenttostandupand answerthe
question)
Student#1: it became asheswhenlighted,the
coloris differenttothe original anditstexture is
rougher.
(Listening)
Class:YesSir.
Physical Change
SlicedFruit(Papaya) Logs intowoodchips

7. Andon the otherhand,the Chemical Changed
Chemical Change
Who can give me otherexamplesinPhysical
Change?
VeryGood,Another?
Okay,good.
How aboutChemical Change.
Excellent.Lastone.
Wow,veryexcellent.
Student#1: blendedfruits
Student#2: crumplingpaper.
Student#3: spoiledmilk
Student#4: digestingfood.
C. Application:
I have here an activitythatyouwill be answering
togetherwithyourgroups.
You will goinfrontone byone and give examples
on the followingchangeswe tackled.Alternately
give example on the Physical ChangeandChemical
change.
Understood?
(Listening)
PHYSICAL CHANGE CHEMICAL CHANGE

8. D. Evaluation:
Okaytime isup. I will checkeverygroup’sanswer
and tomorrowwill be receivingapoints.
Anyquestion?
If there is noquestion please getyournotebook
and answerthisseatwork.
(Studentsmayaskor may not)
(Studentswillgetthere notebook)
Directions:Analyzethe followingchangesinmatter.If the change inmatterisPhysical
Change put“PC” and if it isChemical Change put“CC”. Write youranswerinthe space
provide before the number.
____1. Spoiledfood
____2. Tear paper
____3. WaterintoIce
____4. Burnedwood
____5. Logs intowoodchips
____6. Ignitedmatches
____7. Rustin irons
____8. Cutgarments
____9. Driedleaves
____10. Slicedfruits
E. Closure:
Okaytime isup.
Exchange paperwithyourseatmate andwe will
checkit.
(GIVINGTHE ANSWER)
Okay.Passyour notebookandI will recordit.
Okay.(Postingthe Closure)
To be able toverifyyouunderstoodthe topics
todayplease complete the sentence.
I learned that...
(Exchangingnotebooks)
(CHECKING)
(Passingnotebooks)
F. Assignment:
Give 5 Beneficial and5 Harmful effectsof changesinmatter.
V. Reference:
DelaCruz,EstrellitaS.,et.al. Science and Health fora Changing EnvironmentV,Vibal
PublishingHouse,QuezonCity,Philippines,2000.