Group 4: Torregoza, Jonathan M.
Date per#or$e%: &o'e$ber (), (*+
Velasco, Kiana Mae S.
Date sub$itte%: Dece$ber -, (*+
Sta. Maria, Jules Robert D. Lallana, Jonrei Louis . !an, !esle" K. Section: ++ eolus
Experiment No. 1 Marble Race
ABSTRACT
/n this report, the group e0peri$ente% on t1o substances. The e0peri$ent 1as carrie% out 1ith t1o %i##erent gra%uate% c"lin%ers c"lin%ers containing coconut coconut oil an% li2ui% soap respecti'el". respecti'el". The e0peri$enter e0peri$enter chose to use a $arble as a $e%iu$ to test the substances s ubstances 1hen a $e%iu$ goes through its 'iscosit". The group e0peri$ente% e0peri$ente% on ho1 the 'iscosit" o# the substances 1oul% a##ect the $arble3s settle$ent on the botto$ o# the gra%uate% c"lin%er. /n a%%ition, the $ass o# the $arble 1as also $easure%. /n or%er to gather the %ata, one o# the researchers hol%s the $arble 1hile the other one sets the ti$er. The stop 1atch 1ill start once the $arble 1as %roppe%. #ter that , it 1ill stop 1hen the $arble reaches the botto$ o# the c"lin%er. The e0peri$ent 1as repeate% #or t1o $ore trials. The group #oun% out that the $arble ha% a s$ooth ri%e through the %ish1ashing li2ui%3s 'iscosit". 'iscosit". The $arble in% o# ha% a har% ti$e going through the coconut oil. 5lui%s 1ith lo1 'iscosit" lie li2ui% soap ha'e a lo1er resistance to shear #orces than the coconut oil 1ith higher 'iscosit". Viscosit" increases 1ith stronger inter$olecular #orces cause% b" increase in the $olecular 1eight, an% %ecreases 1ith higher te$perature. te$perature.
INTRODUCTION
Li2ui% has %i##erent properties an% one o# the$ is 'iscosit" that %e#ines the resistance o# the li2ui% to #lo1 #lo1.. This This repo report rt %isc %iscus usse sess an e0pe e0peri ri$e $ent nt to %e$onstrate the %i##erence bet1een the 'iscosit" o# a coconut oil an% li2ui% soap 1herein the researchers use% %i##erent %i##erent $aterial $aterialss such as $arble, $arble, gra%uate% gra%uate% c"li c"lin% n%er er an% an% stop stop 1atc 1atch h that that can can help help the$ the$ to %eter$ine 1hich is $ore 'iscous an% least 'iscous.
The ob6ecti'e o# the e0peri$ent is to %eter$ine an% co$pare the 'iscosit" o# the t1o li2ui%s an% to relate the$ to their inter$olecular inter$olecular #orces.
E#$ERIMENTA% $ROCEDURE
Ti$e8s9
Viscosit"
o# The e0peri$ent 1as
Li2ui%
carrie% out 1ith t1o %i##erent
Trial
Trial
Trial
+
(
)
'erage8s9
li2ui% 8$9
gra%uate%
c"lin%ers containing coconut li2ui%
oil
an% soap
respecti'el". 7oth o#
Li2ui%
=.=+s
=.=-s
=.)+s
=.s
*.+-$
g
*.*)> $ s ⋅
RESU%TS AND DISCUSSION
soap
the t1o li2ui%s 1ere $easure%
Results
in
centi$eters b" the researchers an% $a%e
?oconut
+(.+s
@.@s
+*.s
+*.-@s
oil
*.+-$
g
*.*(= $ s ⋅
Table 1. Data 5ro$ 0peri$ent
the li2ui%s e2ual in height. 8Sho1n in #igure +9. /n a%%ition, the $ass o# the $arble 1as also $easure%.
Discussion
/n or%er to gather the %ata, one o# the researcher hol%s the $arble 1hile the other one sets the ti$er. The stop 1atch 1ill start once the $arble 1as %roppe%. Then, it 1ill stop 1hen the $arble reaches the botto$ o# the c"lin%er. The e0peri$ent 1as repeate% #or t1o $ore trials.8Sho1n in #igure (9 The %ata 1as being in tabulate% #or the co$putations o# each li2ui%3s 'iscosit".
/n the result #ro$ the e0peri$ent, it is clear that the $arble %roppe% in coconut oil is $uch slo1er than the li2ui% soap it $eans that the coconut oil is $ore 'iscous. The e0peri$enter also #oun% out that it is also i$portant to #ill the gra%uate% c"lin%er up to the sa$e height each ti$e because i# the" are not the sa$e "ou 1ill not no1 1hether the" ha'e the sa$e a$ount o# ti$e 1hen "ou put the $arble in it. The e0peri$enter also use the $arble to %eter$ine 1hether the li2ui% soap or oil is $ore 'iscous than the other to tell 1hich li2ui%s are thicer an% 1hich are thinner using the concept o# 'iscosit". Viscosit" increases 1ith stronger inter$olecular #orces cause% b" increase in the $olecular 1eight, an% %ecreases 1ith higher te$perature. The proce%ure has a 'ital role in the e0peri$ent in %eter$ining the 'iscosit" o# the t1o li2ui%s. There are so$e 1a"s in $easuring the 'iscosit" o# a #lui% lie the 'isco$eter.
Figre A!1. Measuring the height o# the t1o li2ui%s. Figre A!". Setup o# the proce%ure
7ut in
this proce%ure, the e0peri$enter $anuall" sol'e #or the 'iscosit" b" using the #or$ula g;8$98s9.
IViscosit"
is
%ue
to
#riction
bet1een
neighboring particles o# the #lui% that are $o'ing at %i##erent 'elocities. !hen #lui% is #orce% through a tube, the #lui% generall" #ter anal"zing the %ata gathere%, the group notice%
7ase%$o'es on the #aster e0peri$ent thata0is per#or$e%, group near the an% 'er"the slo1l"
that the 'elocit" o# the $arble beca$e #aster a#ter the
has obser'e% a $arble %roppe% near thethat 1alls.8Li%e, (**>9. into a c"lin%er o#
#irst trial. The reason 1h" is because the #riction in
li2ui% soap 2uicl" reaches a ter$inal spee% to get to
the $arble beca$e less.
the botto$. The $arble too longer to sin 1hen %roppe% into the c"lin%er o# coconut oil. 5lui%s 1ith
IViscosit"
is
%ue
to
#riction
bet1een
neighboring particles o# the #lui% that are $o'ing at %i##erent 'elocities. !hen #lui% is #orce% through a tube, the #lui% generall" $o'es #aster near the a0is an% 'er" slo1l" near the 1alls.8Li%e, (**>9.
lo1 'iscosit" lie li2ui% soap ha'e a lo1er resistance to shear #orces than the coconut oil 1ith higher 'iscosit". lthough in this e0peri$ent, the group 1as able to learn ho1 to #in% out the 'iscosit" o# an" li2ui%. s a reco$$en%ation the group 1oul% suggest using %i##erent t"pes o# li2ui% in the ne0t session to be able to ha'e $ore co$parison an% to be
?o$putation #or Viscosit" o# Li2ui% Soap
Viscosit" ( A )
=
$ass o# $arble in g 8height o# li2ui%in $eters98a' erage ti$e in secon%s9
$ore accurate 1ith our #inal interpretation. The group there#ore conclu%es that the $ore 'iscous a li2ui% is, the longer it 1ill tae #or an ob6ect to $o'e through the li2ui%. The less 'iscous a li2ui% is
Viscosit" 8B9
Viscosit" 8B9
=
=
*.*>+
the slo1er #or an ob6ect to $o'e through the li2ui%.
8 *.+- 98+*.-@ 9
*.*>+ +.=)4)
REFERENCES
b%o, S. M. E, 8(*+4, ctober -9 Intermolecular
g
Viscosit" 8B9 C *.*(= $ s
Force Range and Noncritical Shear Viscosity of
⋅
the Critical Binary Mixture of Benzene Coconut Oil 8Master3s Thesis, n &a6ah ?o$putation #or Viscosit" o# ?oconut il
Viscosit" ( A )
=
$ass o# $arble in g 8height o# li2ui%in $eters98a' erage ti$e in secon%s9
Fni'ersit" &ablus, alestine.9
-
&ational
Retrie'e%
#ro$
ttps:;;111.researchgate.net;publ ication;(4+***H/nter$olecularH#orceHrange Han%HnoncriticalHshearH'iscosit"Ho#HtheHcritica
Viscosit" 8B9 Viscosit" 8B9
=
=
*.*>+
lHbinar"H$i0tureHo#HbenzenecoconutHoil
8*.+-98=.,,9
I here!y certify that I ha"e gi"en a su!stantial
*.*>+ +.4-((
contri!ution to this re#ort and I did not co#y and$or g
Viscosit" 8B9 C *.*)> $ s ⋅
CONC%USION AND RECOMMENDATION
%uote from any resource material unless !eing cited as reference& I am ma'e 'no(n that failure to accom#lish the second clause (ould !e grounds for #lagiarism and a failing grade for my final la! Jonathan re ort&) Torregoza
Kiana Mae Velasco
!esle" !an
Jules Robert Sta. Maria
).
Jonrei Louis Lallana
4. Si$ultaneousl", %rop the $arble into the c"lin%er Ti$e8s9
A$$ENDI#
an%
Viscosit"
li2ui% Viscosit" ( A )
&eneral C'emi(tr) "
o# li2ui% $eters98a' erage ti$e in secon%s9 >.8height Stop thein ti$er
once the $arble *.*>+ Viscosit" 8B9 reaches 8 *.+- 98+*.-@ 9 =
Trial
Trial
Trial
+
(
)
Viscosit" 8B9 Li2ui%
=.=+s
=.=-s
=.)+s
=.s
the
botto$. Recor% the
'erage8s9
Experiment 1 Marble Race
$ass o# $arble in g
=
8$9 "n* Seme(ter+ ,r* -arter
the
stop1atch
o# Li2ui%
start
*.+-$
ti$e an% repeat #or *.*>+
=
+.=)4) ( $ore trials.
g
*.*)> $
n g another Viscosit" 8B9 C.*.*(= $s ⋅
⋅
Obecti/e(
+. Deter$ine an% co$pare the 'iscosit" o# so$e li2ui%s
soap
gra%uate% c"lin%er, per#or$ three trials
?oconut
+(.+s
@.@s
+*.s
+*.-@s
*.+-$
g
*.*(= $
-. ?lean up the
oil
(. Relate the 'iscosit" o# li2ui%s to their inter$olecular #orces
using coconut oil.
⋅
$aterials Data an* Re(lt(
Material(
+. Gra%uate% ?"lin%ers (. Stop1atch
?o$putation #or Viscosit" o# Li2ui% Soap
Viscosit" ( A )
=
$ass o# $arble in g 8height o# li2ui%in $eters98a' erage ti$e in secon%s9
). Marbles 4. Li2ui% Soap >. ?oconut il . 7alance
Viscosit" 8B9
=
Viscosit" 8B9
*.*>+ 8*.+-98=.,,9
=
*.*>+ +.4-((
. Ruler g
$roce*re
+. Recor% $ass 8in gra$s9 o# the $arble (. 5ill one gra%uate% c"lin%er 1ith +**$L o# Li2ui%
Viscosit" 8B9 C *.*)> $ s ⋅
?o$putation #or Viscosit" o# ?oconut il
Viscosit" ( A )
=
soap. Measure the height 8in c$9 o# the li2ui%.
Viscosit" 8B9 Viscosit" 8B9
=
=
$ass o# $arble in g 8height o# li2ui%in $eters98a' erage ti$e in secon%s9
*.*>+ 8*.+-98=.,,9
*.*>+ +.4-(( g
Viscosit" 8B9 C *.*)> $ s ⋅
