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Chemistry
Chemistry
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1
What are most skin care products?
reduction of oil and water
suspensions of oil and water
emulsions of oil and water
solutions of oil and water
2
What are elemental molecules?
molecules large enough to be seen by the naked eye
molecules containing two atoms each of different elements
molecules containing only one atom of a single element
molecules containing two or more atoms of the same element
3
Antioxidants prevent oxidation by neutralizing what?
oxidants
free radicals
molecules
particles
4
What is the difference between water-in-oil emulsions and oil-in-water emulsions?
w/o emulsions are greasier
o/w emulsions are not easily rinsed away with water
o/w emulsions are greasier
w/o emulsions are easily rinsed away with water
5
Why are water-in-oil (W/O) emulsions greasier than oil-in-water (O/W) emulsions?
the oil is in the external phase in W/O emulsions
the oils in O/W emulsions are not greasy oils
the oils in W/O emulsions are exceptionally greasy oils
the oil is in the internal phase in W/O emulsions
6
What occurs when an acid is mixed with an alkali in equal proportions to form water and a salt?
acid-alkali neutralization reaction
redox reduction
acid-alkali combustion reduction
oxidation-reduction
7
What is the study of substances that contain carbon?
organic chemistry
organic dating
carbon dating
carbon chemistry
8
What is the chemical reaction involving the addition of oxygen or the loss of hydrogen?
oxidation
hydrogenation
reduction
emulsion
9
How much of the Earth's surface, approximately is water?
100%
25%
75%
10%
10
How many branches of chemistry are there?
eight
four
two
six
11
Salons and spas primarily use what kind of emulsions?
water-and-oil
water-in-oil
oil-and-water
oil-in-water
12
What is the pH level of a neutral substance?
4.0
10.0
0.0
7.0
13
What is the most abundant of all substances on Earth?
air
water
wood
dirt
14
What is the gaseous mixture that makes up the Earth’s atmosphere?
oxygen
hydrogen
sky
air
15
What does lipophilic mean?
oxygen loving
oil loving
air loving
water loving
16
In chemistry, what is the term meaning “capable of being mixed”?
miscible
compatible
mixable
immiscible
17
What does hydrophilic mean?
oil loving
air loving
oxygen loving
water loving
18
What are acids?
substances with a pH below 7.0
substances with a pH of 7.0
substances with a pH above 10.0
substances with a pH above 7.0
19
The process through which oxygen is subtracted from, or hydrogen is added to, a substance through a chemical reaction
emulsion
reduction
solution
combination
20
What is true of a moisturizer?
it is an oil-in-water reduction
it is a water-in-oil reduction
it is an oil-in-water emulsion
it is a water-in-oil emulsion
