Chapter 12 Chemistry

Question 1

Inorganic chemistry is the study of substances that do not contain the element carbon, but may contain which element?

Answer 1

Hydrogen

Question 2

Which substance cannot be broken down into simpler substances without loss of identity?

Answer 2

Molecule

Question 3

Chemically joining two or more atoms in definite proportion forms a what?

Answer 3

Molecule.

Question 4

What is a stable physical mixture of two or more substances?

Answer 4

A solution.

Question 5

What is a substance dissolved into a solution?

Answer 5

A solute.

Question 6

Liquids that are not capable of being mixed into stable solutions are considered what?

Answer 6

Immiscible

Question 7

Solutions that contain undissolved particles that are visible to the naked eye are known as what?

Answer 7

Suspensions.

Question 8

What is a mixture of two or more immiscible substances united with the aid of a binder?

Answer 8

An emulsion.

Question 9

What is the substance of that acts as a bridge to allow oil and water to mix or emulsify?

Answer 9

A surfactant.

Question 10

The tail of a surfactant molecule is oil loving or is called what?

Answer 10

Lipophilic

Question 11

A molecule that carries an electric charge is called what?

Answer 11

An ion

Question 12

What are alpha hydroxy acid’s for? also known as AHAs.

Answer 12

They are used to exfoliate the skin.

Question 13

What does an exothermic chemical reaction do?

Answer 13

An exothermic chemical reaction releases heat.

Question 14

A substance that has a pH below 7.0 is considered to be what?

Answer 14

Acidic.

Question 15

Alkanolamines are often used in place of ammonia because they do what?

Answer 15

Produce less odor.

Question 16

True or false:

Minerals are composed of organic chemicals.

Answer 16

False. Minerals are not composed of organic chemicals.

Question 17

Elemental molecules contain two or more what of the same element in definite proportions.

Answer 17

Atoms

Question 18

Vapor is a what that has evaporated into a gas like state.

Answer 18

Liquid.

Question 19

An oxidizing agent is a substance that releases what?

Answer 19

Oxygen.

Question 20

True or false:

Pure substances are the same as physical mixtures.

Answer 20

True.

Question 21

Calamine lotion is an example of a what?

Answer 21

Mixture

Question 22

Water in oil emulsions feel how different than oil in water emulsions?

Answer 22

Greasier than

Question 23

What is used commonly to raise the pH in hair products to allow the solution to penetrate the hair shaft?

Answer 23

Ammonia

Question 24

Volatile organic compounds contain what and evaporate very easily?

Answer 24

Carbon.

Question 25

True or false: Oil has no pH.

Answer 25

True

Question 26

The chemical reaction that combines a substance with oxygen to produce an oxide is called what?

Answer 26

Oxidization

Question 27

The term logarithm means multiples of how many?

Answer 27

10.

Question 28

The process through which oxygen is subtracted or hydrogen is added to a substance via a chemical reaction is called what?

Answer 28

Reduction.

Question 29

Any substance that occupies space and has mass is called what?

Answer 29

Matter

Question 30

Characteristics that can only be determined by a chemical change in the substances are what?

Answer 30

Chemical properties.

Question 31

A chemical combination of matter in definite proportions is called what?

Answer 31

A pure substance.

Question 32

A physical combination of matter in any proportion’s is called what?

Answer 32

A physical mixture.

Question 33

What is the smallest chemical component of an element?

Answer 33

An atom.

Question 34

Rapid oxidation of a substance accompanied by the production of heat and light is known as what?

Answer 34

Combustion.

Question 35

Characteristics that can be determined without a chemical reaction and that do not involve a chemical change in the substance are called what?

Answer 35

Physical properties.