Chapter 7 - Basics Of Chemistry

Question 1

TF you will learn how to layer products

Answer 1

True

Question 2

What is an example of an organic substance?

Answer 2

Plastic

Question 3

TF inorganic substances are flammable

Answer 3

False

Question 4

The simplest form of chemical matter

Answer 4

Element

Question 5

How are elements identified?

Answer 5

Letter symbols

Question 6

TF Atoms of each element are different in structure from the atoms of all other elements

Answer 6

True

Question 7

These have a definite size and definite shape

Answer 7

Solids

Question 8

These have a definite size but not a definite shape

Answer 8

Liquids

Question 9

These have neither a definite size nor a definite shape

Answer 9

Gas

Question 10

Characteristics that can be determined without a chemical reaction and that do not cause a chemical change in the identity of the substance

Answer 10

Physical properties

Question 11

Characteristics that can be determined only with a chemical reaction and that cause a chemical change in the identity of the substance

Answer 11

Chemical properties

Question 12

A change in the form or physical properties of a substance without the formation of a new substance

Answer 12

Physical change

Question 13

Combination of two or more substances that are united physically, in any proportions with combined properties

Answer 13

Physical mixture

Question 14

What state of mater is liquid

Answer 14

Serum

Question 15

The most abundant element found on earth

Answer 15

Oxygen

Question 16

Airs volume consists of what?

Answer 16

1 part oxygen and 4 parts nitrogen

Question 17

What is the most commonly used cosmetic ingredient?

Answer 17

Water

Question 18

What is the range of the pH scale?

Answer 18

0-14

Question 19

What does pH stand for?

Answer 19

Potential hydrogen

Question 20

Creates a pair of ions with opposite electrical charges

Answer 20

Ionization

Question 21

Also known as bases, have a pH above 7.0

Answer 21

Alkalis

Question 22

Substances with a pH below 7.0

Answer 22

Acids

Question 23

What turns litmus paper from red to blue

Answer 23

Bases

Question 24

Changes x10

Answer 24

Logarithmic scale

Question 25

A pH of 8 is how much more alkaline than a pH of 7

Answer 25

10 times

Question 26

Chemical reaction in which the oxidizing agent is reduced and the reducing agent is oxidized

Answer 26

Redox reaction

Question 27

Rapid oxidation of substance, accompanied by the production of heat and light

Answer 27

Combustion

Question 28

What is true of suspensions

Answer 28

They are slightly miscible

Question 29

Uniform mixture of two or more substances

Answer 29

Solution

Question 30

Unstable mixture of two or more immiscible substances

Answer 30

Suspension

Question 31

TF suspensions contain smaller particles than solutions do

Answer 31

False

Question 32

When properly stored how long can an emulsion be stable for?

Answer 32

3 years

Question 33

These are used to emulsify oil and water

Answer 33

Surfactants

Question 34

TF O/W emulsions are easily rinsed away with water

Answer 34

True

Question 35

What is an example of an O/W emulsion

Answer 35

Moisturizing lotion

Question 36

Droplets of oil dispersed in water with the aid of an emulsifying agent

Answer 36

Oil in water emulsion

Question 37

Droplets of water dispersed in an oil

Answer 37

Water in oil emulsion