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Atoms that are the same form a(n)
element
The most accurate method of measuring pH is with
a pH meter
Two or more of the same atoms joined together by a chemical bond is a(n)
molecule
What is created when amino acids join together in chains?
proteins
Matter with definite weight but indefinite volume and shape is called
a gas
What is the side bond that is of the greatest concern to the salon professional?
disulfide bond
When a solution has an equal number of hydrogen and hydroxide ions, the solution is considered
neutral
On the pH scale, numbers less than 7 indicate a(n)
acidic solution
Which bonds found in the hair can be easily broken by heat or water?
hydrogen bonds
Substances of acidic or alkaline nature dissolve in water and/or contain
water
The oil loving part of a surface active agent is called
lipophilic
Which bond is the backbone of all protein molecules?
peptide bonds
Amino acids that create proteins are linked together end to end by
peptide bonds
Most ingredients for conditioners are proteins derived from
animal or vegetable materials
The water loving part of a surface active agent is called
hydrophilic
All matter that is now living or was alive at one time, with carbon present, falls within the scientific division of
Organic chemistry
Neutrons have which type of electrical charge?
none
Hair consists of 97%
keratin
How far can healthy hair be stretched without breaking when wet?
50%
When a solution can't take or dissolve more of the solute than it already holds at a given temperature, it is referred to as being a
saturated solution
The simplest atomic structure is
hydrogen
pH balanced refers to a product that ranges from a pH of
4.5 to 5.5
Alkalis tend to taste
bitter
Atoms that are different form a(n)
compound
A pH of 5 is how many more times acidic than a pH of 6?
10