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Chapter 7 - Basics of Chemistry Flashcards | StudBud
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Chapter 7 - Basics of Chemistry
Chapter 7 - Basics of Chemistry
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1
Moisturizing creams and designed to treat ____________.
wrinkles
dandruff
oil accumulation
dryness
2
The letters pH denote __________, which is the relative degree of acidity or alkalinity of a substance.
partially hydrophilic
potential hydroxide
partial hydrogen
potential hydrogen
3
Which of the following are the basic building blocks all matter?
Electrons.
Atoms.
Protons.
Molecules.
4
Gasoline, synthetic fabrics, plastics and pesticides are all considered organic because they are manufactured from ____.
subatomic particles
natural gas and oil
sodium chloride
ammonium thioglycolate acid
5
What type of shampoos are mild formulations designed to prevent the stripping of haircolor from the hair?
pH-balanced.
Clarifying.
Balancing.
Color-enhancing.
6
What does a pH below 7 indicate?
A logarithmic solution.
An alkaline solution.
A neutral solution.
An acidic solution.
7
Acid-balanced shampoos and normalizing lotions associated with hydroxide hair relaxers work to create what reaction?
Endothermic.
Redox.
acid-alkali neutralization.
Exothermic.
8
What is the average pH for hair and skin?
3.5.
7.5.
5.
9.
9
What term applies to all living things and those things that were once alive?
Organic.
Inorganic.
Element.
Matter.
10
An example of a water-in-oil emulsion is _____________.
mayonnaise
Calamine lotion
cold cream
witch hazel
11
_________ is the most common element found in the known universe.
Hydrogen
Oxygen
Sodium
Carbon dioxide
12
What common cationic ingredient is used in dandruff shampoos?
Amphoteric I-20.
Quaternary ammonium compounds.
Cocamide.
Sodium laureth sulfate.
13
Styling aids give hair body and texture. An example would be , _____________.
cleansing creams
scalp lotions
mousses
pomades
14
A(n) ___________ is a suspension of one liquid dispersed in another.
solution
emulsion
surfactant
solvent
15
What color do acids turn blue litmus paper?
Red.
A darker blue.
Green.
Yellow.
16
There are 118 different elements known to science today. How many of these are naturally occurring on Earth?
98.
116.
76.
50.
17
__________ refers to either the loss of oxygen or the addition of hydrogen.
Reaction.
Application.
Oxidation.
Reduction.
18
Metals , minerals, water, air and ammonia are all examples of __________ substances.
inorganic
natural
organic
live
19
Among the possible ingredients in wrinkle treatment creams are hormones and ___________.
starch
hydrolyzed protein
collagen
glycerin
20
What hair products stimulate the scalp, remove dandruff, or improve manageability and shine?
Medicated conditioners.
Thermal protectors.
Hair tonics.
Instant conditioners.
21
What chemical compound can exist in all three states of matter depending on its temperature?
Water.
Hydrogen.
Oxygen.
Carbon dioxide.
22
Oxidation and reduction always occur simultaneously and are referred to as (n) __________ reaction.
rapid oxidation
endothermic
exothermic
redox
23
Concentrated protein conditioners are used to ________.
help close the cuticle scales
increase the tensile strength of the hair
help equalize the porosity of the hair shaft
help control minor dandruff and scalp conditions
24
An example of an instant conditioner is a _________.
blow drying spray
permanent wave product
dandruff rinse
detangling rinse
25
___________ are examples of emulsions used in barbering services.
Shampoos and conditioners
Hair tonics
Soaps
Powders
26
As the basic unit matter, ___________ cannot be divided into simpler substances by ordinary chemical means.
molecules
water
oxygen
atoms
27
When using a permanent wave neutralizer, ____________.
hair is oxidized by removing hydrogen
haircolor gains oxygen from H2O2
H2O2 loses oxygen
the waving solution is oxidized
28
Which of the following are chemical compounds that attract and retain moisture from the atmosphere?
Mineral oils.
Humectants.
Fatty alcohols.
Silicones.
29
Organic chemistry is the study of substances that contain the element ________.
sulfur
hydrogen
oxygen
carbon
30
An example of a chemical change is ___________.
the oxidation of haircolor products
temporary hair color
ice melting to water
water changing to ice
31
Which of the following allows oil and water to mix emulsify by reducing surface tension?
Sufactant.
Suspension.
Solution.
Emulsion.
32
___________, also known as alkalis, are compounds of hydrogen, a metal, and oxygen.
Bases
Acids
Salts
Oxides
33
In hair lightening processes, what substance oxidizes the melanin pigments in hair, leaving the hair a lighter color?
Water.
Ammonium thioglycolate acid.
Hydrogen peroxide.
Sodium chloride.
34
The pH scale measures the concentration of hydrogen ions in acidic and alkaline ___________ solutions.
hydrogen peroxide
liquid
water-based
unstable
35
Rusting iron and burning wood are examples of a change in what type of properties?
Electrical.
Chemical.
Physical.
Mechanical.
36
Acidic solutions tend to ___________ the hair.
soften
swell
harden
relax
37
An example of physical change is ____________.
rusting iron
burning wood
ice melting to water
burning wood
38
Which of the following remove hair by pulling it out of the follicle?
Packs.
Epilators.
Depilatories.
Masks.
39
A stable, uniform mixture made by dissolving substances (such as solids, liquids, or gas) is a ___________?
suspension
solvent
solute
solution
40
When oxygen is combined with substance, the substance is ____________.
blended
oxidized
united
reduced
41
Nonaqueous solution, such as alcohol or oil, do not have ___________.
pH
their own distinct physical and chemical properties
mass
volume and shape
42
____________ shampoos are formulated to make the hair smooth and shiny and to avoid damaging chemically treated hair.
Clarifying
Conditioning
Medicated
Balancing
43
A(n) __________ charged ion is called an anion.
negatively
positively
naturally
ionized
44
Which of the following is defined as anything that occupies space (volume) and has mass (weight)?
Molecules.
Atoms.
Matter.
Elements.
45
Astringents may have an alcohol content of up to what percentage?
35 percent.
50 percent.
15 percent.
20 percent.
46
This type of chemical reaction absorbs heat energy from an external source for the reaction to actually occur?
Endothermic.
Redox.
Exothermic.
Acid-alkali neutralization
47
Which of the following is an example of pure substance?
Aluminum foil.
Powder.
Concrete.
Salt water solution.
48
An example of an elemental molecule is ________.
hydrogen peroxide
water
common table salt
the oxygen in air