Consumer Chemistry Flashcards
(28 cards)
Which functional group is used in soap production?
Carboxylic acid
How is dirt on a cloth cleaned by detergent?
on the surface of the cloth.
A. Hydrophilic ends repel the dirt
B. Hydrophobic ends soften the dirt particles
C. Hydrophilic ends dissolve the dirt particles
D. Hydrophobic ends of the soap particles
attach to the dirt
D
Which is NOT a factor affecting microbial growth?
A.pH
B. Moisture Content
C. Temperature
D.Nitrogen Gas
D
Which type of colloid is smoke an example
of?
A. Aerosol
B. Emulsion
C. solution
D. suspension
A
Which is NOT TRUE about detergents?
A. Are non-biodegradable
B. Made from natural sources
C. Clean both in soft and hard water
D. Have more cleaning power than soap
B
What is the advantage of soap over detergent?
biodegradable
Which is NOT a soap?
A. Sodium oleate
B. Sodium palmitate
C. Sodium carbonate
D. Sodium stearate
C
What is the classification of the mixture if the
particle sizes of the components are less than 1
nm?
A. colloid
B. Solution
C. Suspension
D. Heterogeneous mixture
B
What are the 3 factors affecting solubility of a solution
Heating
Stirring
Increasing surface area
Which is the composition of the head of a soap
molecule?
A Carboxylate
B. Hydroxyl
C. Nitrate
D. Sulphate
A
What is this food preservation technique that
involves cooking food and sealing it in sterile jars?
A. Canning
B. Pickling
C. Smoking
D.Sugaring
A
Which is NOT a description of a detergent?
A. sodium salts of long chain alkyl hydrogen
sulphate
B. sodium salts of long chain benzene sulphonic acid
C. consists of a large hydrocarbon group that is
non-ionic and a sulphate
D. has a long hydrocarbon end and a short ionic end containing COONa+.
D
The head of a detergent molecule is composed
A. carbonate
C. phosphate
B. manganate
D. sulphate
D
What is this process of food preservation where it involves heating up to 70°C for about 25 seconds?
A. Freezing
B. Fermentation
C. Pasteurization
D.Vacuum-packing
C
Which functional group does sugar belong to?
ketone
Why does detergent clean better than soap?
A. Soap is not suitable in basic water.
B. Detergent has stronger cleaning action both
in basic and acidic water.
C. Detergent, even with small amount,
dissolves dirt particles readily.
D. Soap is primarily a surfactant which lowers
the
B
Which statement is TRUE as to why soap has cleansing action?
A. Both carboxylate end and hydrocarbon portion are hydrophilic
B. Both carboxylate end and hydrocarbon portion are hydrophobic
C. The hydrocarbon end is hydrophilic while the carboxylate end is hydrophobic.
D. The carboxylate end is hydrophilic while the hydrocarbon portion is hydrophobic.
D
Why is paint considered as sol? Because its
dispersion medium is _____ while its
dispersed medium is ________.
liquid ; solid
Which composes the micelle?
A Head of soap and dirt
B. Tail of soap and dirt
C. Head of detergent and grease
D. Tail of detergent, grease and water
B
Mr. Castro bought soda float, gel, milk, and
ink from a nearby convenience store. Which
product/s is/are foam?
A. gel
C. milk and gel
B. soda float
D. ink and milk
B
Why is there a need for a liquid in a container
to be shaken well before use? Because the
mixture is a?
Suspension
What functional group/s need/s a locant on the parent chain
Alcohol and Ketone
Which functional group does NOT contain a carboxyl group?
Carboxylic acid
Which of the following is NOT a traditional type of food preservation?
A. Drying
B. Irradiation
C. Salting
D.Sugaring
B
