Milady Barbering Ch 8 Chemistry

Question 1

Solutions with a pH ____ contract and harden the hair.

Accepted Answer

Below 7.0

Question 2

___ is/ are anything that occupies spaces and has physical and chemical properties.

Accepted Answer

Matter

Question 3

Chemical combinations of ____ of different elements are compound molecules.

Accepted Answer

two or more atoms

Question 4

The percentage of the human body that is composed of ____ is 65 percent.

Accepted Answer

Water

Question 5

____ have a pH above 7.0 and soften and swell the hair.

Accepted Answer

Alkalis

Question 6

Chemical changes in the hair can be created with ____ because of oxidation.

Accepted Answer

Permanent haircolor

Question 7

____ properties include melting and boiling points.

Accepted Answer

Physical

Question 8

Atoms are ____.

Accepted Answer

The basic building blocks of all matter

Question 9

The ____ of a substance measures its acidity and alkalinity.

Accepted Answer

pH

Question 10

As steam, ____ is in its gas state.

Accepted Answer

Water

Question 11

A(n) ____ cannot chemically be separated into simpler substances.

Accepted Answer

Element

Question 12

____ is an example of a compound.

Accepted Answer

Sodium chloride

Question 13

____ chemistry is the study of substances containing carbon.

Accepted Answer

Organic

Question 14

A(n) ____ is any element combined with oxygen.

Accepted Answer

Oxide

Question 15

When mixing acids and alkalis, ____ neutralize each other.

Accepted Answer

Equal proportions

Question 16

Hard water can be softened by ___ or by the use of sodium carbonate.

Accepted Answer

Distillation

Question 17

The pH of hair and skin is an average of ____.

Accepted Answer

5.0

Question 18

Compounds are classified as acids, salts, ____, and bases.

Accepted Answer

Oxides

Question 19

Pure water has a(n) ____ pH.

Accepted Answer

Neutral

Question 20

Soft water comes from ____ or is chemically softened.

Accepted Answer

Rainwater

Question 21

Minerals are ____ substances.

Accepted Answer

Inorganic

Question 22

Only ____ solutions have pH.

Accepted Answer

Aqueous

Questions 22