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E 102.06-102.07 Flashcards | StudBud
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E 102.06-102.07
E 102.06-102.07
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1
The term used to identify anything that occupies space and has weight is called:
a solid
a gas
matter
organic
2
Atoms have three main parts: protons, neutrons, and :
neutrons
elements
electrons
compounds
3
What color does red litmus paper turn when placed in an alkali?
white
green
orange
blue
4
A pH of 5 is how many ties more acidic than a pH of 6?
1000
1.5
100
10
5
Pure substances are made of only one type of:
compound
oxygen and hydrogen
mixture
atom or molecule
6
Which elements is the most abundant in the earth's crust and the second most abundant element in the earth's atmosphere
carbon
nitrogen
hydrogen
oxygen
7
Why do unstable atoms seek other atoms with which they can share electrons?
to become amino acids
to become a protein
to complete their outer shell
to get rid of extra electrons
8
On the pH scale, the closer you get to 14, the stronger the acidity
True
False
9
Neutrons have which type of electrical charge?
negative
chemical
positive
none
10
Matter with definite weight and volume but no definite shape is called:
gas
liquid
organic
solid
11
Protons have which type of electrical charge?
none
neutral
negative
positive
12
Matter with definite weight but indefinite volume and shape is called:
organic
a liquid
a gas
a solid
13
What is a negatively charged ion called:
acid
cation
hydrogen
anion
14
There are 118 known elements; those above which element are synthetic?
108th
118th
92nd
112th
15
On the pH scale, numbers less than 7 indicate a (n):
alkaline solution
chemical solution
neutral solution
acidic solution
16
A solid is defined as:
matter with definite weight, volume, and shape
matter with definite weight and volume but no definite shape
matter with definite weight but no indefinite volume and shape
matter with no definite weight but indefinite volume and shape
17
All matter that is now living or was alive at one time, with carbon present, falls within the scientific division of:
inorganic chemistry
organic chemistry
physics
anatomy
18
Which of the following items has/have definite weight and volume but not definite shape?
oxygen
lotions
hair
ice cubes
19
Why is skin a solid?
has indefinite weight, volume and shape
has definite weight, volume and shape
has definite weight and volume but no definite shape
has definite weight but indefinite volume and shape
20
When a substance gains an electron and oxygen is released, the process is called:
reduction
addition
resuscitation
oxidation
21
What color does blue litmus paper turn when placed in an acid?
white
orange
green
red
22
Which of the following conditions is an example of chemical change?
raindrops turning to snow
water to steam
oxygen and hydrogen combining to form water
water to ice
23
In what pH range is hair, skin and nails?
7.5 to 10.5
11.5 to 12.0
6.5 to 7.0
4.5 to 5.5
24
Which of the following biochemical compounds form components that fill the intercellular spaces in the skin?
carbohydrates
peptide bonds
lipids
amino acids
25
Substance increases the concentration of hydrogen ions when placed in water because it donates, or releases, H+ ions is
alkali
alkaline
base
acid
26
Two or more atoms joined together by a chemical bond is a(n):
protein
molecule
neutron
electron
27
What is the smallest complete unit of an element?
amino acid
atom
molecule
compound
28
pH stands for:
potential hydrogen
product hydration
potential hydroxide
perfect hair
29
Acids tend to taste:
salty
bitter
sweet
sour
30
What happens when an alkali is placed in water?
alkali decrease the concentration of hydrogen ions
they neutralize each other
alkali increases the concentration of hydrogen ions
there are fewer "loose" OH-ions
31
Matter that is not alive, never been alive&doesnt contain carbon, such a rocks, water and minerals is the study of:
physics
anatomy
organic chemistry
inorganic chemistry
32
On the pH scale, numbers greater than 7 indicate a
acidic solution
neutral solution
alkaline solution
chemical solution
33
Carbon, oxygen, hydrogen, and nitrogen form the basis of:
mixtures
elements
amino acids
compounds
34
Many products estheticians use are the result of chemically uniting two different elements, which is known as:
mixture
atom
molecule
compound
35
What is the most common element in the universe?
hydrogen
sulfur
oxygen
nitrogen
36
What is created when amino acids join together in chains?
elements
proteins
compounds
chemicals
37
Skin comprises two solids, which are carbon and sulfur and 3 gases, which are hydrogen, nitrogen, and:
oxygen
helium
neon
propane
38
The scientific study of matter and the physical and chemical changes of matter is known as:
psychology
chemistry
physics
anatomy
39
Electrons have which type of electrical charge?
negative
neutral
none
positive
40
Basic substances that cannot be broken down into simpler substances are called:
molecules
compounds
elements
solids
41
When two hydrogen atoms combine with one oxygen atom, the result is a water molecule, which as a(n):
mixture
compound
atom
element
42
What is it called when a substance loses an electron and oxygen is acquired?
reduction
addition
oxidation
resuscitation
43
The simplest atomic structure is :
carbon
oxygen
sulfur
hydrogen
44
What kind of substance does pH indicate the acidity or alkalinity of?
hydrogen-based
oil-based
alcohol-based
water-based
45
What are the three major biochemical compound groups in the body?
proteins, carbohydrates and lipids
hormones, enzymes and proteins
muscles, nerves and blood
atoms, molecules and mixtures
46
The chemical symbol for carbon is:
Co
Cb
C
Ca
47
A simple unit of carbohydrate is called:
polysaccharides
disaccharides
monosaccharide
saccharide
48
The atomic number of a particular element indicates:
the number of protons in a single atom
the number of atoms in single element
the number of neutrons in a single atom
the number of electrons in a single atoms
49
Which of the following is NOT an example of physical change?
performing a thermal style
iron changing to rust
breaking a glass
performing a haircut
50
The primary materials the body uses the construct and renew itself is:
proteins
nitrogen
lipids
carbohydrates
51
Water freezing and becoming ice is an example of what type of change?
elemental
chemical
molecular
physical
52
What ingredient is listed as the primary ingredient on many skin care products?
ammonia
oil
water
salt
53
A bond uniting two amino acid groups that create proteins are:
salt bonds
peptide bonds
alkaline bonds
side bonds
54
A solution that has more negative hydroxide ions that positive hydrogen ions is:
alkaline
slightly alkaline
neutral
acidic
55
Atoms that are different form
emulsion
elements
mixture
compound
56
When a solution has an equal number of hydrogen and hydroxide ions, the solution is considered:
acidic
positive
negative
neutral
57
Water molecules have two hydrogen atoms and one:
oxygen atom
nitrogen atom
helium atom
sulfur atom
58
Chris was looking for a pH-balanced product to use. pH balanced refers to a product that ranges from a pH of:
11.5 to 12.0
4.5 to 5.5
7.5 to 10.5
6.5 to 7.0
59
Alkalis tend to taste:
bitter
salty
sour
sweet
60
Atoms that are not missing any electrons in their outer shell and are considered electrically neutral are called:
stable
a molecule
a neutron
unstable
61
Why is pure water considered a neutral substance:
anions and cations are present
ions are all positively charged
positive and negative ions balance each other out
positive and negative alkali cancel each other out
62
Distilled water with pH of 7 is considered:
neutral
a salt
an acid
an alkali
63
All of the following statements regarding the pH scale are true EXCEPT:
values below 7 indicate more acidity
values below 7 indicate more alkalnity
logarithmicscale identifies the degree of acidity/alkalinity of a substance
7 indicates a neutral substance
64
Atoms that are different form a
element
compound
emulsion
mixture
65
Solutions that are acidic or alkaline in value can be dissolved in and/or contain:
hydrogen
water
carbon
salt
66
The average pH range of hair, skin and nails is 4.5 to 5.5
True
False