Laboratory Activities

1. Calendar of Laboratory Activities for School Year 2022-2023
Physics
Grade
Level
Topics Competencies Laboratory Activities Date
Grade 7 Motionin One
Dimension
Create and interpretvisual
representation of the
motionof objectssuchas
tape charts and motion
graphs
UniformMotion
Objectives:
1. Calculate anddescribe the velocityof atoycar.
2. Graph the velocityof the toycar.
Materials:
Battery-operatedtoycar
Meterstick
Stopwatch
Procedure:
1. Make sure that the toy car has newbatteriesat
the start pf the activity.
2. Selectaflat surface andwithoutobstaclesfor
the course of yourcar.
3. Mark off the course of yourcar. Label the
startingpointas zeroand mark off succeeding
distancesaspointwith10cm intervals.
4. Setthe stopwatchanddetermine the time it
takesthe car to travel from0 cm to eachmarked
distance. Foreverymarkeddistance,make three
trialsinrecordingthe time.
5. Calculate the average time traveled.
6. Usingthe distance andaverage time traveled,
compute the average velocityusingthe
equation:𝑣 =
𝑑
𝑡

2. Heat Transfer Inferthe conditions
necessaryforheattransfer
to occur
7. Plotthe positionversustime graph.Trace the
line todetermine the shape of the graph.
QuestionsandAnalysis:
1. How doyou compare each of the computed
average velocitytothe slope of the graph?
2. What isthe shape of the graph if you plotthe
average speedvstime?
Heat Transfer
Objective:
1. Observe anddescribe convectionof heatthrough
liquids
Materials:
2 transparentcontainers(drinkingglass,beaker,bottle)
dropper
hot water
coldwater
piece of cardboard
Procedure
1. Fill one of the glasscontainerswithtapwater.
2. While waitingforthe watertobecome still,mix
ina separate containerafewdropsof food
coloringwitha small amountof verycoldwater.
(Youmay alsomake the foodcoloringcoldby
placingthe bottle inside the refrigeratorforat
leastan hourbefore youperformthe activity.)
3. Suck a fewdropsof cold foodcoloringusingthe
dropperandslowlydipthe endof the medicine

3. dropperintothe containerwithtapwater,down
to the bottom.See to itthat the coloredwater
doesnotcome outof the dropperyetuntil its
endreachesthe bottomof the container.
4. Slowlypressthe droppertorelease asmall
amountof the liquidatthe bottomof the
container.Thenslowlyremove the dropperfrom
the container,makingsure notto disturbthe
water.Observe forfewminutes.
5. Fill the othercontainerwithhotwater.
6. Place the cardboard overthe top of the
containerwithhotwater.Thencarefullyplace
the containerwithtapwater ontop of it.The
cardboard mustsupportthe containerontop.
QuestionsandAnalysis:
1. Doesthe foodcoloringstayat the bottomof the
containeror doesitmix withthe liquidabove it?
2. What happenstothe foodcoloringafterplacing
the containerabove the othercontainer?Why
doesthishappen?
3. How isheattransfertakingplace inthe setup?
Where isheatcomingfrom and where isit
going?
4. Is there a transferof matter,the foodcoloring,
involvedduringthe transferof heat?
Grade 8 Mechanical Energy Identifyandexplainthe
factors thataffect
potential andkineticenergy
Potential Energy and KineticEnergy
Objective:
1. Understandhowenergy transformstoone form and
another.
August18, 2022

4. Materials:
1 clearplasticcontainerwithcover
1 rubberband
1 pc 3-cm roundbarbecue sticks
1 pc barbecue stickwithsharppart cut
maskingtape
Procedure:
1. Make a hole atthe centerof the cover andat the
bottomof the plasticcontainer.
2. Insertthe rubberband intothe hole at the bottomof
the container.Insertinbetweenthe rubberbandthe 3-
cm barbecue stick.Tape the barbecue stickto
keepitinplace.
3. Insertthe other endof the rubberband intothe hole
inthe cover.Inserta beador a washerto the rubber
bandbefore insertingthe longbarbecue stick.
4. You just made a toy.Twistthe rubberbandby
rotatingthe longbarbecue stick.
5. Lay the toyon the floor.Observe it.
QuestionsandAnalysis:
1. What happensto the toy?
2. What kindof energyis‘stored’inthe rubberband?
3. What kindof energydoesarollingtoyhave?
4. What transformationof energyhappensinarolling
toy?

5. The Propagation of
Sound
Investigatesthe effectof
temperature to
the speedof sound
Speedof Sound
Objective:
1. To verifythattemperature affectsthe speedof sound.
Materials:
TuningFork
3 Bowlsfilledwithwaterof differenttemperature
ColoredPapers
Ruler
Procedure:
1. Place one bowl of water(warm)
2. Strike the prongsof the tuningforks sothat they
will vibrate.
3. Immediatelyputthe fork intothe bowl of warm
water.Observe whathappens.
4. Measure howfar the water jumpsoutfromthe
bowl.
5. Recordyour observation.
6. Repeatthe same steps1 to 5 for the tap and
coldwater.
QuestionsandAnalysis:
1. How doestemperature affectsound?
2. What are the factors thataffectthe speedof
sound?
August26, 2022

6. Grade 9 Momentum Relate impulseand
momentumto
collisionof objects
Inferthat the total
momentumbefore and
aftercollisionisequal
Conservationof Momentum
Objective:
1. Understandhowmomentumisconservedwithina
system.
Materials:
15 pcs Marbles
2 pcs Metersticks
Improvisedplane
Procedure:
1. Setup 8 marblesina straightline onthe
improvisedplane.
2. Arrange the marblesclose toeach otherso as no
space shouldbe betweenthem.
3. Get anotherpiece of marble andstrike itonone
endof the arrangedmarbles.Observe whatwill
happen.
4. Repeatstep 3, but thistime use 2 marbles.
5. Repeatstep4, but thistime use 3 marbles.
QuestionsandAnalysis:
1. What have youobservedafterhittingthe setup
withone marble?
2. What happenedtothe setup afterusingmore
marbles?
3. IF youare goingto use 5 marbles, whatdoyou
thinkwill happen?
4. How are you goingto explainthe lawof
conservationof momentumbasedfromthe
experimentperformed?

7. Grade 10 Light: Concave and
ConvexLenses
Simple ElectricMotors
and Generators
Predictthe qualitative
characteristics(orientation,
type,andmagnification) of
imagesformedbyplane
mirrorsand curved
mirrorsand lenses
Explainhow
electricmotorsand
generatorsoperate
Refraction ina Glass!
Objective:
1. Recognize differentimagesformedbylenses.
Materials:
1. a clear drinkingglassormug
2. spoon
3. water
Procedure:
1. Prepare a cleardrinkingglassormug witha
spoon.
2. Pourwater intothe glass/mugupto about1
inchbelowthe brim.
3. Observe howthe spoonappearswhen viewed
on the sidesinsucha waythat the eye and the
air-waterboundaryare at the same level.
4. Draw whatyou have seeninside the box
providedfor.
BuildA Motor!
Objective:
1. Construct an electricmotor
Materials:
1. Coil of magnetic/copperwire
2. Washers/paperclip
3. Magnets
4. Connectingwires
5. Battery/electricitysource
September1,2022
September12,
2022

8. Procedure:
Warning!Disconnectthe DC motormodelimmediately
aftermakingobservations.
1. Windthe copperwire intoa coil about 1 inch
(2.5 cm) indiameter.Make fouror five loops.
Wrap the endsof the wire aroundthe coil a
couple of timesonopposite sidestoholdthe
coil together.Leave 2inches(5 cm) projecting
fromeach side of the coil and cut off any extra
wire.
2. If you are usinginsulatedwire,use the wire
stripperstostripthe insulationoff the endsof
the wire projectingfromthe coil.If youare using
enameledwire,use the sandpapertoremove
the enamel.
3. Positionthe washer/paperclipoppositeyetin
level witheachsuchthatit can holdthe coil of
wire as showninthe figure.
4. Use the alligatorclipleadstoconnectthe
batteryor powersupplytothe paperclips,
connectingone terminal of the batterytoone
paperclipand the otherterminal tothe other
paperclip.
5. Testingof Model – Carefullypile withthe three
neodymium/axial magnetsandthe batteryona
level surface.Mountthe shapedwire,withits
pivotpart as a rotatingpoint,overthe positive
terminal of the battery.Checkthatthe bottom
endsof the wire curl looselyaroundthe magnets
forminga closedcircuit.Younowhave a simple
DC electricmotormodel thatwe will simplycall
a DC motormodel.Give the current-carrying
shapedwire agentle spin.

9. 6. Observe andrecordwhat happenstothe coil of
wire.If yourDC motor doesnot work,stretch
your tolerance, abilities,andknowledge.
Biology
Grade
Level
Topics Competencies Laboratory Activities Date
Grade 7 Plant Cell and Animal Cell Differentiate plantand
animal cellsaccordingto
presence orabsence of
certainorganelles
Animal Cell VsPlantCell
Objectives:
1. identifypartsof the cell;
2. describe plantandanimal cells;
3. differentiate plantcellsfromanimal cells;
4. construct a VennDiagramto showparts that are
commonto both andparts that are onlyfoundineither
plantor animal cells.
Materials:
sheetof paper
ballpenorpencil
Illustrationsof ananimal cell anda plantcell

10. Procedure:
1. Studycloselythe diagrammaticpresentationsof
plantand animal cellsand theirparts.
2. Compare the shape and the differentpartsof a
plantcell withthatof an animal cell.
3. Basedon youranswersand observations,create/
draw a Venndiagramof plantand animal cellson
a sheetof paper.
QuestionsandAnalysis:
1. Whichcell parts are foundinbothcells?
2. Whichare presentonlyinanimal cells?
3. Whichare presentonlyinplantcells?
Grade 8 Cell Division - Compare mitosisand
meiosis,andtheirrole in
the cell-divisioncycle
- Explainthe significance of
meiosisin
maintainingthe
chromosome number
The MeiosisModel
Objectives:
1. Demonstrate howthe processof meiosishappens.
2. Describe howthe daughtercellsof gametesendup
withhalf the numberof chromosomesof the parentcell.
Materials:
14 yellowtoothpicks
14 red toothpicks
Transparenttape
Scissors
Colorpencil (blue andpink)
Procedure:
1. The girlswill demonstrate howaneggcell divides
and colorthe circlespink.The boyswill
demonstrate howaspermcell multipliesand
colorthe circlesblue.

11. The one-wayflowof
energy
and the cycling of
materials
in an ecosystem
- Analyze the rolesof
organismsinthe
cyclingof materials
- Explainhowmaterials
cycle inan
ecosystem
2. Arrange twoyellowtoothpicksandtwored
toothpicksinside the circle providedonyour
book.Use the transparenttape to putthe sticksin
place.The toothpicksrepresentthe twopairsof
chromosomes.
3. On the nextcircle,getanotherfouryellow
toothpicksandfourred toothpicksandplace
theminside the circle.Putthe toothpicksinplace.
Thisis the nextgenerationof meiosis.
4. In the nextstage,youwill see twocirclesside by
side.Getthe same numberof toothpicksas the
previousstep.Divide the toothpicksfromthe
previouscircle equallyoneachcircle.Putthe
toothpicksinplace.
5. In the nextstage,youwill see fourcircles.Getthe
same numberof toothpicksasthe previouscircle.
Divide the toothpicksfromthe previouscircle
equallyin eachcircle.Putthe toothpicksinplace.
Small World
Objective:
1. Demonstrate the processesinvolvedinwatercycle.
Materials:
Small aquarium TransparentTape
Scissors Soil
Plasticcover Water
Small container Plastictoys(houses,cars,animals)
Procedure:

12. 1. Get the small aquarium.Place anample amount
of soil inside the aquarium.Youmaydesignitto
have mountains,hills,etc.
2. Place the small containerinside yourterrarium.
Thiswill be the reservoirof water.Youmay place
it ina hole and coveritssideswithsoil sothatit is
not visible.Thenfillitwithwater.
3. Place yourtoys inyour terrarium.Arrange your
toysin sucha waythat your terrariumlookslike a
small community.
4. Finallycoverthe whole terrariumwithplastic
coverand seal itwitha tape.Keepittightly
sealed.
5. Place yourterrariumunderthe sun andobserve
whathappens.Recordyourobservation.
Grade 9 SpeciesExtinction Relate speciesextinctionto
the failure of
populationsof organismsto
adapt to
abrupt changesinthe
environment
Extinct SpeciesProfile
Objective:
1. Determine the cause of extinctionof differentspecies
Materials:
Booksand InternetReferences
Procedure:
1. Researchone extinctspecies,itsbackground,
habitat,interestingfactsandthe cause of its
extinction.
2. Fill outthe questionnaire provided.
3. Compare yourprofile withotherclassmates.
Determine the mostcommoncause of extinction
and reportit inclass.

13. Photosynthesis Designandconduct an
investigationtoprovide
evidence thatplantscan
manufacture theirown
food
Photosynthesis
Objective:
1. Determine if plantscanmanufacture theirownfood.
Materials:
Two youngpottedplants
Benedict’sSolution
Testtubes
Mortar and pestle
Procedure:
1. Get twopottedplants.Keepone plantindirect
sunlightandthe otherone ina darkplace for ten
days.
2. Observe whathappenstothe twoplants.Record
your observations fortendays.Note the changes
takingplace on eachplant.
3. Aftertendays,cut off a leaf fromeach plant.Grin
each leaf inwaterusingmortarand pestle.Be
sure to get enoughsapoutof each leaf.
4. Transferthe liquidobtainedfromthe leaf inatest
tube.Addthree dropsof Benedict’ssolutionto
the testtube.
5. Place the testtube withBenedict’ssolutionina
beakerwithhotwaterfor five minutesandrecord
your observations.

14. Grade 10 FeedbackMechanisms Describe the feedback
mechanismsinvolvedin
regulatingprocessesinthe
female reproductive system
(e.g.,menstrual cycle)
Menstrual Cycle Graphing
Objectives:
1. Examine the eventsof the humanmenstrual cycle with
regardto hormone levels,ovarianfunction,anduterine
structure;
2. Graph the changinglevelsof FSH,LH,estrogen,and
progesterone duringthe 28-daycycle.
Materials:
1. labpapers
2. graph paper
3. pensand pencils
4. coloredpencils(optional)
Procedure:
1. Look at the “Data” portionof the lab,whichshows
the eventsof the menstrual cycle. Construct
“Graph A” usingthe data table and the data for
the relative levelsof FSHandLH releasedfromthe
pituitarygland.
2. AftercompletingGraphA,construct“Graph B”
usingthe data fromthe data table forthe relative
levelsof estrogenandprogesteronereleasedfrom
the ovary.
October14,
2022

15. Proteinsand Genetic
Mutations
Explainhowmutationsmay
cause changesin the
structure and function of a
protein.
3. Make sure to notice thateach graph has two
differenty-axes,one foreachof the hormones
listed.
4. Compare the data that yougraph to the diagram,
whichshowschangesinovarianfunctionand
uterine structure,andanswerthe questions.
ProteinSynthesisLab-Act
Objectives:
1. Explainthe role of DNA,mRNA,ribosomes,aminoacids
and tRNA have inproteinsynthesis
2. List the name of the enzyme thatcarriesout mRNA
transcription
3. Identifythe correctbasesto insertina molecule of
mRNA beingtranscribedfromatemplate DNA
Materials:
1. 20 DNA Template Cards(℅ teacher)
2. 64 Anti-CodonCardsorAnti-codonposters
3. Lab Papersnd pencil
Procedures:
1. Make sure youlookat whatthe DNA Template
cards looklike.
2. Findthe anti-codontranslation
charts/posters/cardsatthe frontof the room.
3. Pickup a DNA template card,write downthe DNA
template cardnumber,andtranscribe itinto
mRNA
November11,
2022

16. 4. Withthe mRNA sequence,gobacktoyour desk
and the ribosomal studentwill write outthe tRNA
anti-codonsequence
5. The tRNA studentwill searchoutthe correctanti-
codoncard write downthe corresponding word.
6. Aftercompletingthe sentence,astudentinthe
groupwill tell youhis/hergroupsentence.If not
correct, have the groupgo overthe same DNA
template.If correct,have the mRNA pickanother
card from the teacher.
Note:Studentsmay workaloneorin groups(it is better to
assignonestudenttobe the mRNA,anotherstudentto
write downtheanticodons(ribosome) andthethird
studenttosearch outthe properwords(tRNA).Every
sentencemusthavea start (ATG) andastop (TAG) codon.
Data: The followingdatawascollectedduringthis
experience:

17. Chemistry
Grade
Level
Topics Competencies Laboratory Activities Date
Grade 7 Solutions - Prepare different
concentrationsof mixtures
accordingto usesand
availabilityof materials
PropertiesofSolutions
Objective:
Compare the evidence gatheredwiththe predictionsyou
made;and describe the propertiesof solutionsbasedon
observations.
Materials:
6 cupswater
6 pieces,spoons
eitherof the following:cheesecloth(katsa),old,whiteT-
shirtor filterpaper
2 tablespoonseachof the following:sugar,salt,mongo
seeds,
powderedjuice,cookingoil,vinegar
12 clear bottlesorcups
2 pieceseach,measuringspoons(½tspand 1tsp)
2 pieces each,measuringcups(½cupand 1cup)
3 funnelsorimprovisedfunnel made from500 mL plastic
bottle
1 funnel rack
Procedure:
1. Predictwhichamongthe givensampleswilldissolvein
water.Write yourpredictionsincolumn2 of Table 1.
2. Put one cup of waterineach of the cups.

18. Substancesand Mixtures Distinguishmixturesfrom
substancesbasedona set
of properties
3. Add ½ teaspoonof eachof the six samples.Use the
teaspoontodissolve asmuchof each sample aspossible.
Use a differentteaspoonforeachof the cups.
4. Filterthe mixture withfilterpaper.Youmayuse “katsa”
or old, white T-shirtwiththe improvisedfunnelfrom
plasticbottle.
Answerthe followingquestions:
a. Describe the mixture thatresultedaftermixing.Write
your answerincolumn3.
b. Howmany phasesdoyou observe?Write youranswer
and observationsincolumn4.
c. Identifythe solute ineachof the mixtures.
d. What isthe solventineachof the mixtures?
e.In whichmixture were youable toseparate the
components(soluteandsolvent)byfiltration?Write your
observationsincolumn5of Table 1.
f.Which of the samplesare solutions?Write youranswer
incolumn6.
Mixtures: Acid or Base
Objective:
Findout if a givensample isacidicorbasic usingthe plant
Indicator
Materials:
1 pc mature,dark violeteggplantorcamote leavesof
Mayana or Baston ni San Jose
alum(tawas) powder
sharp knife orpeeler
small casserole ormilkcan

19. plasticeggtray or small transparentplasticcups
brownbottle withcover
alcohol lamp
tripod
Procedure
1. Peel aneggplantas thinas possible.(Youmayalsouse
the skinof purple camote orthe leavesof redmayana or
Bastonni San Jose.) Cutthe materialsintosmall pieces
and place ina small casserole ormilkcan.You may keep
the fleshof the eggplantorcamote for otherpurposes.
2. Add about⅓ to ½ cup tap water to the peel depending
on the size of the eggplantor camote used.Boil for5
minutes.Stirfromtime totime.
3. Transferthe mixture intoabottle while itisstill hot.
There isno needtofilter,justremove the solidportion.
The mixture maychange if leftinopenair formore than5
minutes.
4. Immediatelyaddapinch(2-3 matchstickheadsize) of
alum(tawas) powderintothe solutionoruntil the
solutionbecomesdarkblue incolor.Stirwell whilestill
hot.This isnowthe indicatorsolution.
Part B. Determiningthe acidityorbasicityof some
commonhouseholditems
In thispart of the activity,youwill findoutif agiven
householdmaterial isacidicorbasicusingthe plant
indicatoryouhave preparedinPart A.
MaterialsNeeded
plantindicatorpreparedinPartA
vinegar
distilledwater
tap water

20. bakingsoda
bakingpowder
calamansi
Otherfood/home itemswithnocolor:
(toothpaste,shampoo,soap,detergent,fruitjuice like
bukojuice,sugarinwater,softdrink)
2 plasticeggtrays or 12 small plasticcontainers
6 droppers
6 plasticteaspoons
stirrer(maybe teaspoon,barbecue stickordrinking
straw)
Procedure
1. Place one (1) teaspoonof eachsample ineachwell of
the egg tray.
2. Add 8-10 drops(or ½ teaspoon) of the plantindicatorto
the firstsample.
Note:If the sample issolid,wetapinch(size of 2-3 match
heads) of the solidwithabout½ teaspoonof distilled
water.
3. Note the color produced.Recordyourobservationsin
column2 of Table 1.
4. Repeatstepnumber1 of Part B for the othersamples.
5. Determine the acidicorbasic nature of your sample
usingthe colorscheme belowforeggplantorcamote
indicatorandrecord the nature of
each sample.
Stronglyacidic:redto pale red
Weaklyacidic:blue
Weaklybasic:green
Stronglybasic:yellow

21. Grade 8 Atoms and Molecules -Explainthe propertiesof
solids,liquids,
and gasesbasedonthe
particle nature of
matter;
-Explainphysical changesin
termsof the
arrangementandmotionof
atomsand
molecules
Atoms and Molecules
Objective:
-Make a model of the differentparticlesof matter.
-Understandthe conceptof atoms andmoleculeswiththe
use of models.
Materials:
1 redgum drop
3 greengumdrop
1 yellowdrop
9 white small marshmallows
1 plasticbag3” by 7”
30 toothpicks
Procedure:
1. Withthe use of a toothpicktorepresenta
covalentbond,make amodel of the following
molecules;
a. H2- twomarshmallowsattachedbya
toothpick
b. HCl- withthe use of a toothpick,poke ahole
intothe centerof a marshmallowthenstick
the toothpicktothe greengumdrop.Do not
attach them.Putthemin the plasticbag.Tie
the openendof the plasticbag.
c. H2O- usingthe toothpick,attachtwo
marshmallowstothe redgumat rightangle
witheachother.
d. Cl2- attach twogreendropswitha toothpick
e. H2S- Using a toothpick,attacheach of the two
marshmallowstothe yellowgumdropsat
rightangle witheachother.

22. 2. Answerthe followingquestions:
a. Whichof the modelshave the same colorof
candies?
b. What kindof substancesare these models
that have the same color? Anelementora
compound?
c. Why are theyrepresentedwiththe same
color?
d. Whichof the followingmodelscontain
differentcolorsof candies?
e. What kindof substancesare these models
that have differentcolors?Anelementora
compound?
f. Why are theyrepresentedwiththe different
color?
Grade 9
Grade 10 Behavior of Gases Investigate the relationship
between
1. volume andpressure at
constanttemperature of
gas;
2. volume andtemperature
at constant pressure of gas.
Boyle’sLaw
Objective:Investigate the relationshipbetweenvolume
and pressure of gasesat constanttemperature.
Materials:
1. 25 mL syringe
2. glue stick
3. setof weights
4. ruler
5. candle or glue gun
6. 5” x 3” illustrationboard
7. 6” x 4” x 0.25” wood
8. match (if youoptedto use candle)
Procedures:
February9,
2023

23. CollisionTheoryand the
Factors Affectingthe
Rates of Chemical
Reactions: Catalyst and
Temperature
Explainhowthe
factors affectingratesof
chemical reactionsare
appliedinfood
preservationandmaterials
production,control of fire,
pollution,and
1. Pull the syringe’splungertofill itwithair.See toit that
the readingis
at approximately25.0mL.
2. Seal the syringe’sopeningwith the meltedglue stick.
3. Make a hole thatisclose to the size of the openingof
the syringe ina
6” x 4” flat wood.Screwthe flatwoodon a stable object.
In an upright
position,insertthe sealedpartof the syringe inthe hole
of the wood;
be sure itis sturdy.
4. Paste a 5” x 3” illustrationboardatthe endof the
syringe’splunger.Thiswill serve asthe weights’holder.
You have justmade a Boyle’sLawApparatus.
5. Place a 200-g weightonthe holderandgetthe volume
reading.
6. Place one at a time differentweightsonthe syringe’s
plunger.
If you do nothave set of weights,youmayuse booksof
the same kind.
Don’tforgetto get the massof eachbook.
7. Record the mass of the volume readingusingatable (℅
teacher)
Coffee Break!
Objective:Identifythe evidence of chemical reaction
Materials:
1. 2 SachetsCoffee powder
2. 2 Cups
March 27,
2023

24. corrosion 3. Coldwater
4. Hot water
5. 2 tspsugar
6. 2 tspof milk
Procedure:
1. Pour the coffee intothe cups.(Hotwaterfor Cup A and
ColdWater forCup B).2. Pour1 tsp of sugar and milkin
each cup.
3. Stir the contentsof Cup A anddo not stirthe contents
of CupB.
4. Taste the mixture ineachcup.
Guide Questions:
1. Which coffee mixturetastesbetter?Why?
2. Does temperature affectsthe taste of the mixture?
Why?
3. Does stirringaffectthe taste of the mixture?Why?