Ch. 12 Chemistry

Question 1

All hair color products are organic chemicals

Answer 1

True

Question 2

There are 60 naturally occurring elements, each with its own distinct physical and chemical properties

Answer 2

False

Question 3

Water and alcohol are examples of miscible liquids

Answer 3

True

Question 4

The branch of science that applies to substances that contain carbon is called

Answer 4

Organic chemistry

Question 5

All matter has physical and chemical properties and exists in the form of a

Answer 5

Solid, liquid and gas

Question 6

The simplest form of chemical matter that cannot be broken down without the loss of identity is a

Answer 6

Element

Question 7

Elements differ from one another because of the difference in the structure of their

Answer 7

Atoms

Question 8

Chemically combining two or more atoms produce a

Answer 8

Molecule

Question 9

The chemical combination of two or more atoms of different elements produces a

Answer 9

Compound

Question 10

Change in the form of a substance that does not cause a chemical reaction is a

Answer 10

Physical change

Question 11

Chemical reactions that are characterized by or formed by giving off heat are

Answer 11

Exothermic

Question 12

A chemical combination of matter in definite(fixed) proportions is a

Answer 12

Pure substance

Question 13

Air contains many substances, including nitrogen, carbon dioxide, and water vapor, and is an example of a

Answer 13

Physical mixture

Question 14

A stable physical mixture of two or more substances is a

Answer 14

Solution

Question 15

A substance, usually liquid, that dissolves another substance to form a solution is a

Answer 15

Solvent

Question 16

Liquids that can be mixed together to form stable solutions are

Answer 16

Miscible

Question 17

An unstable physical mixture of two or more immiscible substances is a

Answer 17

Emulsion

Question 18

Substances that allow oil and water to mix, or emulsify, are:

Answer 18

Surfactants

Question 19

A solution with a pH value of 7 indicates a:

Answer 19

Neutral solution

Question 20

Substances used to neutralize acids or raise the pH of many hair products are:

Answer 20

Alkanolamines

Question 21

An example of an ammonia compound that is used to perform chemical services in a salon is:

Answer 21

Ammonium hydroxide

Question 22

Ions with a positive electrical charge are considered to be

Answer 22

Cation

Question 23

A sweet, colorless, oily substance that is used as a moisturizer in skin and body creams is:

Answer 23

Glycerin

Question 24

A common volatile organic compound used in hair spray is:

Answer 24

Ethyl alcohol

Question 25

An atom or molecule that carries an electrical charge is an:

Answer 25

Ion