Basics of Chemistry

Question 1

A combination of substances that are held together by physical rather than chemical ties is called a ________.

Answer 1

Mixture

Question 2

What type of change occurs when ice melts and becomes water?

Answer 2

Physical

Question 3

If a product has a pH of 8.9 , it is considered __________.

Answer 3

Alkaline

Question 4

_________ is a sweet, colorless, oily substance formed by the decomposition of oils, fats, or fatty acids.

Answer 4

Glycerin

Question 5

There are about _______ naturally occurring elements, each with its own distinctive physical & chemical properties.

Answer 5

90

Question 6

Pure water with a pH of 7 is considered to be _________.

Answer 6

Neutral

Question 7

The separating of a substance into ions is known as

Answer 7

Ionization

Question 8

Sodium chloride is commonly known as ________.

Answer 8

Table salt

Question 9

Liquids that mix easily are known as ________.

Answer 9

Miscible

Question 10

In creating a solution, the liquid used to dissolve a substance is called the _______.

Answer 10

Solvent

Question 11

A molecule is formed by joining 2 or more ________ chemically.

Answer 11

Atoms

Question 12

An alteration of the properties of a substance without the formation of a new substance is a __________.

Answer 12

Physical change

Question 13

Lighting a match is an example of ________.

Answer 13

Rapid oxidation

Question 14

A preparation made by dissolving a solid, liquid, or gaseous substance in another substance is _______.

Answer 14

A solution

Question 15

The pH of normal hair is ________.

Answer 15

5.0

Question 16

A permanent mixture of two or more substances that are united with the aid of a binder (gum) is an _________.

Answer 16

Emulsion

Question 17

Temporary mixtures of two kinds of matter are _________.

Answer 17

Suspensions

Question 18

Organic chemistry is the study of all substances containing ________.

Answer 18

Carbon

Question 19

Oxidation-reduction reactions, also known as _________ , are responsible for the chemical changes created by hair colors , hair lighteners, permanent wave solutions, and neutralizers.

Answer 19

Redox

Question 20

When two or more elements combine chemically, they form a new substance called _______.

Answer 20

A Compound

Question 21

The branch of chemistry which deals with substances that do not contain carbon is called _________.

Answer 21

Inorganic chemistry

Question 22

Anything that occupies space, has physical and chemical properties, and exists in either a solid, liquid or gas form is known as _________.

Answer 22

Matter

Question 23

The smallest particle of an element that still retains the properties of that element is the _________.

Answer 23

Atom

Question 24

Substances that cannot be reduced to simpler substances are called _________.

Answer 24

Elements

Question 25

The formation of a new product by the uniting of two or more elements is known as ___________.

Answer 25

A compound

Question 26

The letter symbol for lead is _______.

Answer 26

Pb

Question 27

When 2 or more atoms are joined together chemically, a/an _________ created.

Answer 27

Molecule

Question 28

Another name for alkalies is _________.

Answer 28

Bases

Question 29

When a substance is combined with oxygen, the substance is _________.

Answer 29

Oxidized

Question 30

The head of a surfactant molecule is _________ , meaning water loving.

Answer 30

Hydrophilic

Question 31

The tail of a surfactant molecule is _________ , meaning oil loving.

Answer 31

Lipophilic

Question 32

____________ are substances used to neutralize acids or raise the pH of many hair products.

Answer 32

Alkanolamines

Question 33

__________ organic compounds are two or more elements combined chemically that contain carbon & evaporate very quickly.

Answer 33

Volatile