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Basics of Chemistry
On the pH scale, numbers greater than 7 indicate a(n):
Hair consists of 97%
Basics of Chemistry
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1
Hair consists of 97%
Electrons
Keratin
Trace minerals
Protons
2
On the pH scale, numbers greater than 7 indicate a(n):
Neutral solution
Acidic solution
Chemical solution
Alkaline solution
3
Neutrons have which type of electrical charge?
Positive
Negative
Chemical
None
4
What is the side bond that is of the greatest concern to the salon professional?
Salt bond
Disulfide bond
Van der waals forces
Hydrogen bond
5
The most accurate method of measuring pH is with:
Indicator paper
Indicator liquid
A pH meter
pH paper
6
When two hydrogen atoms combine with one oxygen atom, the result is a water molecule, which is a(n):
Element
Compound
Atom
Mixture
7
What color does blue litmus paper turn when placed on an acid?
Orange
Green
Red
White
8
In what pH range is skin and nails?
6.5-7.0
7.5-10.0
11.5-12.0
4.5-5.5
9
What color does red litmus paper turn when placed on an alkali?
Blue
Green
Orange
White
10
The term used to identify a anything that occupies space and has weight is called:
Organic
Matter
A gas
A solid
11
All matter that is now living or was alive at one time, with carbon present, walls within the scientific division of:
Physics
Organic chemistry
Anatomy
Inorganic chemistry
12
Putting a sodium hydroxide relaxer under a hair dryer:
Could turn into van der waals forces
Will link together the protein groups
Will increase the hair’s amino acid content
Could break the critical peptide bonds and destroy the protein structure
13
The bonds found within hair that help organize protein chains in order to build hair are called:
Water bonds
Ionic bonds
Van der waals forces
Side bonds
14
When a solution has an equal number of hydrogen and hydroxide ions, the solution is considered:
Acidic
Negative
Neutral
Positive
15
What is created when amino acids join together in chains?
Compounds
Proteins
Chemicals
Elements
16
Atoms that are the same form a(n):
Element
Emulsion
Mixture
Compound
17
Water molecules have two hydrogen atoms and one:
Helium atom
Oxygen atom
Nitrogen atom
Sulfur atom
18
Two or more of them same atoms joined together by a chemical bond is a(n):
Electron
Molecule
Protein
Neutron
19
All of the following statements regarding pH are true EXCEPT:
Values below 7 indicate more alkalinity
7 indicates a neutral substance
Values below 7 indicate more acidity
20
Which of the following actions is NOT an example of a physical change?
Performing a haircut
Shattering a piece of glass
Iron changing to rust
Performing a thermal style
21
Which of the following elements is the most abundant in the earth’s crust & 2nd most abundant in the earth’s atmosphere
Hydrogen
Nitrogen
Carbon
Oxygen
22
Substances of acid Or alkaline nature dissolve in water and/or contain:
Water
Hydrogen
Carbon
Salt
23
Matter with definite weight but indefinite volume and shape is called:
Organic
A liquid
A gas
A solid
24
Matter with definite weight, volume, and shape is known as:
A solid
Matter
A gas
Organic
25
On the pH scale, numbers less than 7 indicate a(n):
Neutral solution
Acidic solution
Alkaline solution
Chemical solution