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LAB EXPERIMENTS MOD5-7
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Cards (16)
Carbonyl Group Test
- responsible for physical and chemical reaction.
2,4-dinitrophenylhydrazine Test
Positive Test:
Yellow
/
Orange
color
Sodium Bisulfate
- Formation of white precipitate
Aldehydes - Positive Test :
Magenta
color
Schiff’s
Test
- used to check for the presence of aldehyde.
Fehling’s
Test
Detection of reducing sugars and non-reducing sugars
Positive Test :
Red
Precipitate
Reducing
Sugar :
Glucose
and
Lactose
(red precipitate)
Non-Reducing Sugar :
Sucrose
and
Starch
(blue precipitate)
Ketones
Positive Color :
Yellow
or
Orange
precipitate
Flavors of
fruit
because of Ketones
Sodium Nitroprusside Test (red color)
- medication used to
lower
blood
pressure
- used to detect the presence of
keto
acid
in blood and
urine.
Iodoform
Test
Positive Test -
Yellow
Precipitate with Antiseptic odor
Used to check the presence of carbonyl group
Carbohydrates
- Nutrient in our food
Macronutrients
found in
certain food and drinks
Sugar, starches, and
Fiber
Fats and
Protein.
Uses of Carbohydrates:
Main
sources
of
energy.
Fuels the
brain.
Helps the
Heart
,
Heart
Muscle
, and
Central
Nervous
system.
Fiber aids in
digestion.
Keeps
Blood
Cholesterol
in check.
Glucose,
Lactose
,
Sucrose
,
Starch
(common carbs)
Major Function of Sugar and Starches:
Providing
energy
and regulates the blood
glucose
(only in sugar)
Gives p
rotein
e
nergy
Breaks Down f
atty
a
cids
Preventing k
etosis
in brain
Used as F
lavor
and S
weetener.
D
ietary
fiber
Molisch
Test
- Formation of Purple Ring
Benedict’s
Test
- Detecting reducing sugar
Positive Test:
Blue
or Brick Red Precipitate
Tollen’s Test
Positive Result:
Silver
Mirror
Test for aldehyde