WS 7

Question 1

THEY ARE HETEROGENOUS GROUP
OF ORGANIC COMPOUNDS THAT ARE
INSOLUBLE IN WATERAND SOLUBLE IN NON
POLAR ORGANIC SOLVENTS

Answer 1

LIPIDS

Question 2

PURE FATS AND OILS ARE _________,
__________, AND __________

Answer 2

COLORLESS
ODERLESS
TASTELESS

Question 3

LIPIDS ARE THEY ARE ENERGY RICH ORGANIC MOLECULES THAT ARE SOLUBLE IN WATER (T/F)

Answer 3

INSOLUBLE

Question 4

THEY ARE HIGH PROPORTIONSOF SATURATED FATTY ACIDS

Answer 4

SOLID TRIGLYCERIDES (FATS)

Question 5

THEY ARE HIGH PROPORTIONS OF UNSATURATED FATTY ACIDS

Answer 5

LIQUID TRIGLYCERIDES (OILS)

Question 6

ALKALINE HYDROLYSIS IS TERMED ___________ BECAUSE ONE OF THE PRODUCTS OF THE HYDROLYSIS IS A SOAP, GENERALLY SODIUM OR POTASSIUM SALTS OF FATTY ACIDS

Answer 6

SAPONIFICATION

Question 7

TRIACYLGLYCEROLS MAY BE HYDROLYZED BY
SEVERAL PROCEDURES, THE MOST COMMON
OF WHICH UTILIZES ____________ OR _____________

Answer 7

ALKALI
LIPASES

Question 8

THE TERM ________ IS APPLIED TO ANY FAT OR OIL
THAT DEVELOPS A DISAGREEABLE ODOR.

Answer 8

RANCIDITY

Question 9

CAUSES OF RANCIDITY

Answer 9

HYDROLYSIS
OXIDATION

Question 10

OXIDATIVE RANCIDITY OCCURS IN TRIACYLGLYCEROLS CONTAINING __________

Answer 10

UNSATURATED FATTY ACIDS.

Question 11

WHAT ARE THE 3 CLASSES OF LIPIDS

Answer 11

SIMPLE LIPIDS
COMPOUND LIPIDS
DERIVED LIPIDS

Question 12

EXAMPLES OF SIMPLE LIPIDS

Answer 12

FATS
OILS
WAXES

Question 13

EXAMPLES OF COMPUND LIPIDS

Answer 13

PHOSPHOLIPIDS
GLYCOLIPIDS

Question 14

EXAMPLES OF DERIVED LIPIDS

Answer 14

FATTY ACIDS
GLYCEROL
STEROID DERIVATIVES

Question 15

THIS TEST IS USED TO KNOW THE SOLUBILITY OF LIPIDS IN SOME SOLVENTS, ACCORDING TO POLARITY FEATURE LIPIDS ARE INSOLUBLE IN POLAR SOLVENTS BECAUSE LIPIDS ARE NON POLAR COMPOUNDS.

Answer 15

SOLUBILITY TEST

Question 16

SOLVENTS WHERE COCONUT/ PALM OIL ARE SOLUBLE

Answer 16

CHLOROFORM
ETHER

Question 17

SOLVENTS WHERE COCONUT/ PALM OIL ARE INSOLUBLE

Answer 17

WATER
DILUTED HCL
DILUTED NAOH
ETHYL ALCOHOL

Question 18

THIS TEST IS USE TO DETERMINE THE DEGREE OF
UNSATURATION OF LIPIDS.

Answer 18

BROMINE WATER TEST

Question 19

BROMINE WATER BECOMES COLOURLESS WHEN SHAKEN WITH AN ___________ VEGETABLE OIL, BUT IT STAYS ORANGE-BROWN WHEN SHAKEN WITH A ___________ VEGETABLE FAT.

Answer 19

UNSATURATED
SATURATED

Question 20

BROMINE WATER BECOMES COLOURLESS WHEN IT IS SHAKEN WITH AN _________. WHILE ________ CANNOT

Answer 20

ALKENES
ALKANES

Question 21

THIS TEST IS USED TO DETECT THE PRESENCE OF
GLYCEROL OR FAT

Answer 21

ACROLEIN TEST