Ch 7 - Chemistry

Question 1

What has physical properties that we can see, smell, taste and touch

Answer 1

Matter

Question 2

What causes oxidation

Answer 2

Addition of oxygen or the loss of hydrogen

Question 3

What is an ion

Answer 3

Atom or molecule that carries an electrical charge

Question 4

What is a atom with a positive electrical charge

Answer 4

Cation

Question 5

What is a ion with a negative charge

Answer 5

Anion

Question 6

What does the term “miscible” mean

Answer 6

Capable of being mixed

Question 7

What is united with the aid of an emulsifier to create an emulsion

Answer 7

Two or more immiscible substances

Question 8

What is a solution

Answer 8

Uniform mixture of two or more mutually miscible substances

Question 9

What is air

Answer 9

Gaseous mixture that makes up earth atmosphere

Question 10

What is true of liquid

Answer 10

It is matter with fixed volume but no definite shape

Question 11

What is NOT true of atoms

Answer 11

All atoms are identical

Question 12

What is true of oxygen

Answer 12

It is the most abundant element on Earth

Question 13

What is true of water

Answer 13

It is the most abundant of ALL substances on Earth

Question 14

What is true of elements

Answer 14

Elements are the simplest form of matter

Question 15

What is light a form of

Answer 15

Energy

Question 16

What is true of each of the approximately 90 naturally occurring elements

Answer 16

Each has its own distinctive physical and chemical properties

Question 17

What term refers to molecules that contain two or more atoms of the same element

Answer 17

Elemental molecules

Question 18

What businesses primarily use oil-in-water emulsions

Answer 18

Salons and spas

Question 19

What is true of moisturizer

Answer 19

It is an oil-in-water emulsion

Question 20

What is a difference between water-in-oil emulsions and oil-in-water emulsions

Answer 20

Water-in-oil emulsions are greasier

Question 21

What are most skin care products

Answer 21

Emulsions of oil and water

Question 22

What term means “water-loving”

Answer 22

Hydrophilic

Question 23

What term means “oil-loving”

Answer 23

Lipophilic

Question 24

How much of the air is made up of nitrogen

Answer 24

Four-fifths

Question 25

What is the science that deals with the composition, structure and properties of matter and how matter changes under different conditions

Answer 25

Chemistry

Question 26

What are the two branches of chemistry

Answer 26

Organic and inorganic

Question 27

What element is absent from the compounds studied in inorganic chemistry

Answer 27

Carbon

Question 28

What element is found in all living things, whether there plants or animals

Answer 28

Carbon

Question 29

What is the study of substances that contain carbon

Answer 29

Organic chemistry

Question 30

What is any substance that is dissolved by a solvent to form a solution

Answer 30

solute

Question 31

What do antioxidants prevent by neutralizing free radicals

Answer 31

ionization

Question 32

What time of neutralization reaction forms water and salt

Answer 32

Acid-alkali

Question 33

What is the natural PH of the skin

Answer 33

5.5

Question 34

What term refers to substances with a PH below 7.0

Answer 34

Acids

Question 35

What are substances with a PH above 7.0

Answer 35

Alkalis

Question 36

What type of substance has a PH level of 7.0

Answer 36

Neutral

Question 37

What are suspensions

Answer 37

Unstable mixtures of two or more immiscible substances

Question 38

What is reduction

Answer 38

Loss of oxygen or the addition of hydrogen

Question 39

What is the term that refers to matter in its three physical forms (liquid, solid, gas)

Answer 39

States of matter

Question 40

How much of earths surface, approximately is water

Answer 40

75 percent