Basics of Chemistry

Question 1

A substance that has a pH below 7.0 is considered to be ______.

Answer 1

Acidic

Question 2

The _________ is the smallest chemical component of an element.

Answer 2

Atom

Question 3

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

Answer 3

Hydrogen

Question 4

Unstable physical mixtures of undissolved particles in a liquid are _______

Answer 4

Suspensions

Question 5

Characteristics that can be determined without a chemical reaction and that do not involve a chemical change in the substance are _________.

Answer 5

Physical properties

Question 6

Alpha hydroxy acids (AHAs) are derived from ______ and used in the salon to exfoliate the skin and to help adjust the pH of certain products.

Answer 6

Plants

Question 7

Which of these is NOT composed of organic chemicals?

Answer 7

Minerals

Question 8

A substance that cannot be broken down into simpler substances without a loss of identity is ______.

Answer 8

An element

Question 9

Alkanolamines are often used in place of ammonia because they _______

Answer 9

Produce less odor

Question 10

Rapid oxidation of a substance accompanied by the production of heat and light is _______

Answer 10

Combustion

Question 11

Chemically combining two or more atoms in definite proportion forms __________

Answer 11

a molecule

Question 12

A physical combination of matter in definite proportions is a(n) ____

Answer 12

pure substance

Question 13

Chemical reactions that release a significant amount of heat under certain circumstances are _______

Answer 13

exothermic

Question 14

A(n) ____ is a substance dissolved into a solution

Answer 14

solute

Question 15

An oxidizing agent is a substance that releases ______

Answer 15

Oxygen

Question 16

Water-in-oil emulsions feel _____ than oil-in-water emulsions.

Answer 16

Greasier

Question 17

An atom or molecule that carries an electrical charge is called an _______.

Answer 17

Ion

Question 18

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

Answer 18

atoms

Question 19

The term “logarithm” means multiples of _______.

Answer 19

10

Question 20

Volatile organic compounds contain _________ and evaporate very easily.

Answer 20

Carbon

Question 21

A(n) ____________ is a stable physical mixture of two or more substances in a solvent.

Answer 21

Solution

Question 22

An unstable physical mixture of two or more immiscible substances plus a special ingredient is _________.

Answer 22

an emulsion

Question 23

The chemical reaction that combines a substance with oxygen to produce an oxide is __________.

Answer 23

oxidation

Question 24

Liquids that are not capable of being mixed together to form stable solutions are considered ________.

Answer 24

immiscible

Question 25

A chemical combination of matter in definite proportions is a _________.

Answer 25

pure substance

Question 26

Chemical reactions that release a significant amount of heat under certain circumstances are __________.

Answer 26

exothermic

Question 27

Vapor is __________ that has evaporated into a gas-like state.

Answer 27

a liquid

Question 28

A substance that allows oil and water to mix or emulsify is ________.

Answer 28

a surfactant

Question 29

Any substance that occupies space and has mass is ________

Answer 29

matter

Question 30

The glitter in nail polish that can separate from the polish is an example of __________.

Answer 30

a suspension

Question 31

The tail of a surfactant molecule is oil-loving or

Answer 31

lipophilic

Question 32

The ingredient used to raise the pH in hair products to allow the solution to penetrate the hair shaft is _______.

Answer 32

ammonia

Question 33

A pure substance is a chemical combination of matter in______

Answer 33

fixed

Question 34

Characteristics that can only be determined by a chemical reaction and a chemical change in the substance are _____

Answer 34

chemical properties

Question 35

A chemical reaction in which oxidation and reduction take place at the same time is ________

Answer 35

redox