WorksheetsCos 1 Unit 102 Test
Total questions: 25
Worksheet time: 25mins
Which of the following statements describes how human hair is formed?
salt bonds connect to amino acids
hydrogen bonds create a chemical change
bonding of protein chains to other protein chains
amino acids cause a simple physical change
When amino acids combine to form the protein of the hair:
the hair’s amino acid content will decrease
they form a new amino acid group
they take on a spiraling configuration
the hair’s amino acid content will increase
Which bond is the backbone of all protein molecules?
salt
keratin
peptide
hydrogen
Carbon, nitrogen, oxygen, and hydrogen form the basis of:
mixtures
elements
compounds
amino acids
When two hydrogen atoms combine with one oxygen atom, the result is water, which is called a(n):
atom
mixture
elements
compounds
What is the side bond that is of the greatest concern to the salon professional?
salt bond
disulfide bond
hydrogen bond
van der Waals forces
Putting a sodium hydroxide relaxer under a hair dryer:
will link together all protein groups
could turn into van der Waals forces
will increase the hair’s amino acid content
could break the critical peptide bonds and destroy the protein structure
What makes up the primary composition of hair?
keratin
protons
electrons
trace minerals
Atoms that are different form a(n):
atom
mixture
emulsion
compound
Neutrons have which type of electrical charge?
none
chemical
positive
negative
Basic substances that cannot be broken down into simpler substances are called:
solids
elements
molecules
compounds
Matter with definite weight and volume but no definite shape is called:
organic
a gas
raindrops turning to snow
oxygen and hydrogen combining to form water
Substances of acidic or alkaline nature dissolve in water and/or contain:
salt
water
carbon
hydrogen
When a solution has an equal number of hydrogen and hydroxide ions, the solution is considered:
acidic
neutral
alkaline
slightly alkaline
On the pH scale, numbers less than 7 indicate a(n):
acidic solution
neutral solution
chemical solution
alkaline solution
A pH of 5 is how many more times acidic than a pH of 6?
1.5
10
100
1,000
What is the pH range of hair, skin, and nails?
4.5 to 5.5
6.5 to 7.0
7.5 to 10.5
11.5 to 12.0
Substances of acidic or alkaline nature dissolve in water and/or contain:
water
salt
carbon
hydrogen
Which bond is the backbone of all protein molecules?
salt
keratin
peptide
hydogen
Which of the following conditions is an example of chemical change?
water to ice
water to steam
oxygen and hydrogen combining to form water
raindrops turning to snow
The term used to identify anything that occupies space and has weight is called:
a gas
matter
a solid
organic
On the pH scale, numbers greater than 7 indicate a(n):
acidic solution
neutral solution
alkaline solution
chemical solution
pH balanced refers to a product that ranges from a pH of:
4.5 to 5.5
6.5 to 7.0
7.5 to 10.5
11.5 to 12.0
What is the side bond that is of the greatest concern to the salon professional?
salt bond
disulfide bond
hydrogen bond
van der Waals forces
Distilled water with a pH of 7 is considered:
a salt
neutral
an acid
an alkali
