chemistry form 5.pptx
TRANSCRIPT
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CHEMISTRY FORM 5:
CHEMICAL FOR
CONSUMERS
PREPARED BY:-
NUR FATIN NADIRAH BINTIFAIROL AZMI
NUR SYAZWANI BINTI IBRAHIMANIS SABRINA BINTI ABDULLAH
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COMPARISON OFSOAP & DETERGENT
+ FOOD ADDICTIVE
PRESERVATIVE &
ANTIOXIDANT
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COMPARISON OF
SOAP AND
DETERGENT
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Hard water contains a great amont o!
ca"cim and magnesim ions# Soa$ cannot %e sed in &ard water
%ecase t&e magnesim and ca"cim ionswi"" react wit& soa$ ions to !orm a non'
so"%"e $reci$itate in water t&at is ca""ed asoa$ ("m or scm#
Soa$ cannot $rodce %%%"e in &ard water#
Soa$ scm is not easi") c"eaned# It wi"""ea*e a c"ear sediment t&at can %e seen ont&e c"ot&es and case t&e c"ot&es to !ee"&ard#
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PROPERTIE
S
SOAP DETERGENT
+"eaning
,ower
Less $ower!" More $ower!"
-ase O!Rinsing
It is di.c"t to was&awa) a"" soa$ onc"ot&es# T&e soa$t&at remains "ea*e
and odor and s$oi"t&e !a%rics
Rinse ot we"" !romc"ot&es
$H S"ig&t") a"/a"ine +an %e contro""edto sit c"eansing
tas/Mo"ec"arForm"a
Determined %) t&e!att) acid !ond int&e oi" or !at sed to$rodce soa$
+an %e modi(ed tosit t&e c"eansingtas/# -g0 adetergent can %e
made s$ecia"") !orc"eanin toi"et
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FOOD ADDICTIVES
Food Additi*es are natra" or s)nt&etics%stance w&ic& are added to !ood to2'
i3 $re*ent s$oi"ageii3 im$ro*e its a$$earance 0 taste or te4tre
iii3 $re*ent growt& o! microorganisms
i*3 $re*ent o4idation o! !ats and oi"s %)o4)gen in air
*3 restore t&e co"or o! !ood destro)eddring !ood $rocessing#
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PRESERVATIVES
s%stance added to !ood tos"ow down and $re*ent t&e growt& o!microorganisms in order to /e$t t&e
"asts "onger#
sa"ts0 *inegar and sgar &a*e%een sed !or centries to
$reser*e !ood
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PRESERVAT
IVES
MOLECUL
AR
FORMUL
A
USES
Sa"t sgar Retard t&e growt& o!microorganism
5inegar ,ro*ide acidic condition t&at
in&i%its t&e growt& o!microorganisms
Sodimnitrite
Sodimnitrate
NaNONaNO
,re*ent !ood $oisoning incan !oodMaintain t&e natra" co"oro! meat
Ben6oicacidSodim%en6oate
+H +OOH+H +OONa
,reser*e saces0 !rit 7ice07ams and margarine#
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ANTIOXIDANTS
i3 $re*ent o4idation t&at cases rancid !ats and %rown !oods
ii3 to s"ow down t&e o4idation $rocess#
) !ood containing !ats or oi"s areo4idised and %ecome rancid w&ene4$osed to air#
) T&is ma/es t&e !ood n$a"ata%"e#) T&e rancid $rodcts are *o"ati"e
organic com$onds wit& 8 odors#
9e4$2 %tanoic acid0 +H +OOH3
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ANTIO:IDANTS US-S
Bt)"ated&)dro4)aniso"e 9BHA3
Bt)"ated&)dro4)to"ene 9BHT3
To retard rancidit) in oi"s
Sodim citrate To sto$ !ats !rom trning rancid
5itamin + ,reser*e t&e co"or o! !rit
7iceStim"ates t&e immnes)stems,rotect against c&romosomes%rea/age
In&i%it t&e !ormation o!carcinogeic nitrosamines
5itamin - Redce t&e ris/ o! &eartdisease and cancerNetra"i6e !ree radica"
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THANK YOU