Chapter 7 Basics of Chemistry

Question 1

The smallest particle of an element is the

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atom

Question 2

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

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a solution

Question 3

Substances that act as a bridge to allow oil & water to mix or emulsify are

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surfactants

Question 4

Combination of substances that are held together by physical rather than chemical ties is

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mixture

Question 5

When fermented to make wine, the sugar in grapes is converted into

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ethyl alcohol

Question 6

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

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physical

Question 7

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

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solvent

Question 8

Temporary mixtures of two kinds of matter are

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suspensions

Question 9

The branch of chemistry that deals with products that do not contain carbon is called

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inorganic chemistry

Question 10

The head of a surfactant molecule is ___, meaning water-loving

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hydrophilic

Question 11

Liquids that mix wasily are known as

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miscible

Question 12

The separating of substance into ions is known as

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ionization

Question 13

There are ___ naturally occurring elements, w/ its distinctive physical & chemical properties

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90

Question 14

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

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alkaline

Question 15

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

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compound

Question 16

A permanent mixture of two or more substances that are united with the aid of a binder is

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an emulsion

Question 17

The tail of surfactant molecule is ___, meaning oil-loving

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lipophilic

Question 18

Redox is a contraction for

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oxidation-reduction

Question 19

A substance that adds hydrogen to a chemical compound or subtracts oxygen from the compound is

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a reducing agent

Question 20

Pure water with a pH of 7 is considered to be

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neutral

Question 21

When a substance is combined with oxygen, the substance is

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oxidized

Question 22

A molecule is formed by joining two or more ___ chemically.

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atoms

Question 23

Substances that cannot be reduced to simpler substances are called

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elements

Question 24

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

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a compound

Question 25

When two or more atoms are joined together chemically, what is created?

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a molecule

Question 26

An alteration of the properties of a substance with the formation of a new substance is a

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physical change

Question 27

Another name for alkalis is

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bases

Question 28

Organic chemistry is the study of all substances containing

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carbon

Question 29

Chemical reaction in which oxygen is subtracted from or hydrogen is added to a substance is

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reduction reaction

Question 30

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

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Alkalinolamines

Question 31

Anything that occupies space has physical&chemical properties&exists in a solid/liquid/gas form

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matter

Question 32

___ organic compounds are substancs containing carbon that evaporate very quickly & easily.

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Volatile

Question 33

A special type of oil used in nail polish dryers & as a skin protectant is

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silicone

Chapter 7 Basics of Chemistry

Questions 33

Chapter 7 Basics of Chemistry

Questions 33