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Electricity/Matter and PH Flashcards | StudBud
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Electricity/Matter and PH
Electricity/Matter and PH
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1
Which bonds found in the hair can be easily broken by heat or water?
van der Waals forces
disulfide bonds
peptide bonds
hydrogen bonds
2
Distilled water with a pH of 7 is considered
neutral
an acid
an alkali
a salt
3
pH balanced refers to a product that ranges from a pH of:
6.5 to 7.0
11.5 to 12.0
4.5 to 5.5
7.5 to 10.5
4
Protons have which type of electrical charge?
negative
neutral
positive
none
5
What are the initials used to help you remember fire extinguisher use?
APSS
SSPA
SAPS
PASS
6
A unit of electric resistance is called a(n):
watt
ohm
insulator
volt
7
Which of the following descriptions identifies a volt?
number of electrons flowing on a line
measure of how difficult it is to push electrons through a resistor
measure of how difficult it is to push electrons through a conductor
measure of how hard the electrons are being forced or pushed by a source
8
Two or more of the same atoms joined together by a chemical bond is a(n):
neutron
protein
electron
molecule
9
Putting a sodium hydroxide relaxer under a hair dryer
will link together all protein groups
could turn into van der Waals forces
could break the critical peptide bonds and destroy the protein structure
will increase the hair’s amino acid content
10
What color does red litmus paper turn when placed in an alkali?
green
blue
orange
white
11
Which of the following actions should NOT be done if a fire results from an overload of an electric circuit?
turn off the circuit
smother it with a heavy rug or towel
use a fire extinguisher
put water on it
12
All matter that is not alive, has never beenalive and does not contain carbon, falls within the study of
inorganic chemistry
physics
organic chemistry
anatomy
13
Which of the following changes alternating current to direct current?
insulator
rectifier
ohm
conductor
14
Substances of acidic or alkaline nature dissolve in water and/or contain:
carbon
salt
water
hydrogen
15
Atoms that are different form a(n):
mixture
emulsion
compound
element
16
Two common sources of electric current are generators and:
loads
watts
frequencies
batteries
17
A pH of 5 is how many more times acidic than a pH of 6?
1000
100
1.5
10
18
The atomic number of a particular element indicates:
the number of neutrons in a single atom
the number of protons in a single atom
the number of electrons in a single atom
the number of atoms in a single element
19
Dropping an electrical appliance into water, making it a foreign conductor, causes a(n)
closed circuit
overload
short circuit
open circuit
20
A volt is a unit of electric:
resistance
strength
frequency
pressure
21
The bonds found within hair that help organize protein chains in order to build hair are called
water bonds
side bonds
van der Waals forces
ionic bonds
22
Fires in electrical circuits can occur if:
the circuit is open
there is a closed path, called a circuit
too many appliances use the same wall socket and overload the circuit
the circuit breaker is manually turned to the off position
23
Hair consists of 97%:
keratin
electrons
protons
trace minerals
24
How many watts equal one kilowatt?
100
10,000
1,000
10
25
Since silver and copper transmit electricity, they are called:
closed circuit
insulators
electrons
conductors
26
What is the pH range of hair, skin and nails?
11.5 to 12.0
4.5 to 5.5
7.5 to 10.5
6.5 to 7.0
27
An amp is a unit of electric:
pressure
resistance
strength
frequency
28
On the pH scale, numbers greater than 7 indicate a(n):
alkaline solution
chemical solution
neutral solution
acidic solution
29
Hair comprises two solids which are carbon and sulfur and three gases which are hydrogen, nitrogen and:
propane
helium
neon
oxygen
30
Cords on appliances should be kept straight and free of knots, kinks, and tangles to prevent
volts
breaks
currents
loads
31
An ampere is a unit of electric:
pressure
strength
resistance
frequency
32
Amino acids that create proteins are linked together end to end by
side bonds
salt bonds
alkaline bonds
peptide bonds
33
Which type of bond does number 3 represent on the illustrated protein chain?
disulfide bond
salt bond
hydrogen bond
van der Waals forces
34
On the pH scale, numbers less than 7 indicate a(n):
acidic solution
neutral solution
chemical solution
alkaline solution
35
When two hydrogen atoms combine with one oxygen atom, the result is a water molecule, which is a(n):
mixture
atom
element
compound
36
Atoms have three main parts: protons, neutrons and:
compounds
neutrons
elements
electrons
37
The simplest atomic structure is
sulfur
oxygen
carbon
hydrogen
38
Electric current moves along a path called a(n)
watt
conductor
insulator
volt
