PART 2: GENERAL SCIENCES/ CHAPTER 7: Basics Of Chemistry

Question 1

What has physical properties that we can see, smell, taste & 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 an atom with a positive electrical charge?

Answer 4

Cation

Question 5

What is an 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 the Earth’s 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 & chemical properties.

Question 17

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

Answer 17

Elemental molecules

Question 18

What businesses primarily use oil-in-water emulsions?

Answer 18

Salons & 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(w/o) emulsions & oil-in-water (o/w) emulsions?

Answer 20

W/O 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 & 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 is the study of substances that contain carbon?

Answer 28

Organic chemistry

Question 29

What element is found in all living things, wether they are plants or animals?

Answer 29

Carbon

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

Oxidation

Question 32

What type of neutralization reaction forms water & 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 3 physical forms ( liquid, solid, gas)?

Answer 39

States of matter

Question 40

How much of the Earth’s surface, approximately, is water?

Answer 40

75 percent