Basics of Chemistry Chp 7

Question 1

an alteration of the properties of a substance without formation of a new substance is what kind of change?

Answer 1

physical change

Question 2

what organic compounds are substances containing carbon that evaporate very quickly and easily?

Answer 2

volatile

Question 3

what are substances used to neutralize acids or raise the pH of many hair products?

Answer 3

alkanolamines

Question 4

a chemical reaction in which oxygen is subtracted from or hydrogen is added to a substance is called what?

Answer 4

reduction reaction

Question 5

anything that occupies space?

Answer 5

matter

Question 6

in creating a solution. the liquid used to dissolve a substance is called the what?

Answer 6

solvent

Question 7

when a substance is combined with oxygen that substance is what?

Answer 7

oxidized

Question 8

redox is a contraction for what?

Answer 8

oxidation reduction

Question 9

a combination of substances that are held together by physical rather than chemical ties is called what?

Answer 9

mixture

Question 10

substances that act as a bridge to allow oil and water to mix or emulsify are what?

Answer 10

surfactants

Question 11

there are about how many naturally occurring elements, each with its own distinctive physical and chemical properties

Answer 11

90

Question 12

when two or more elements combine chemically they form a new substance called what?

Answer 12

a compound

Question 13

what type of change occurs when ice melts and becomes water?

Answer 13

physical change

Question 14

a special type of oil used in nail polish dryers and as a skin protectant is what?

Answer 14

silicone

Question 15

a molecule is formed by joining two or more what chemically?

Answer 15

atoms

Question 16

organic chemistry is the study of all substances containing what?

Answer 16

carbon

Question 17

the smallest particle of an element is?

Answer 17

an atom

Question 18

the formation of a new product by the uniting of two or more elements is known as what?

Answer 18

compound

Question 19

when two or more atoms are joined together chemically, what is created?

Answer 19

a molecule

Question 20

another name for alkalis is what?

Answer 20

bases

Question 21

substances that cannot be reduced to simpler substances are called what

Answer 21

elements

Question 22

a substance that adds hydrogen to a chemical compound or subtracts oxygen from the compound is known as what?

Answer 22

a reducing agent

Question 23

when fermented to make wine, the sugar in grapes is converted into what?

Answer 23

ethyl alcohol

Question 24

the tail of a surfactant molecule is what? (oil loving)

Answer 24

lipophilic

Question 25

the head of a surfactant molecule is what?( water loving)

Answer 25

hydrophilic

Question 26

pure water with a pH of 7 is considered to be what?

Answer 26

neutral

Question 27

a permanent mixture of two or more substances that are untied with the aid of a binder known as what?

Answer 27

an emulsion

Question 28

the separating of a substance into ions is known as?

Answer 28

ionization

Question 29

if a product has a pH of 8.9 it is considered what?

Answer 29

alkaline

Question 30

a preparation made by dissolving a solid liquid or gas substances in another substance is?

Answer 30

solution

Question 31

the branch of chemistry that deals with products that do not contain carbon is called what?

Answer 31

inorganic chemistry

Question 32

liquids that mix easily are known as?

Answer 32

misclible

Question 33

temporary mixtures of two kinds of matter are what?

Answer 33

suspensions

Question 34

what is the basic unit of matter that cannot be divided into simpler substances by ordinary chemical means

Answer 34

atom

Question 35

a chemical reaction in which oxygen is subtracted from or hydrogen is added into substances is called?

Answer 35

reduction

Question 36

when acids and alkalis are mixed together in equal proportions they do what to eachother?

Answer 36

neutralize eachother

Question 37

all matter exists in one of three different physical forms, what are they

Answer 37

solid liquid and gas

Question 38

in creating a solution, the liquid used to dissolve a substance is?

Answer 38

the solvent

Question 39

substances that act as a bridge to allow oil and water to mix or emulsify are?

Answer 39

surfactants

Question 40

organic chemistry is the study of all substances containing?

Answer 40

carbon

Question 41

nail polish containing glitter is an unstable physical mixture of undissolved particles in liquid which is known as

Answer 41

suspension

Question 42

the separating of a substance into ions is known as

Answer 42

ioniztion

Question 43

oxygen is an example of an?

Answer 43

element molecule

Question 44

a combination of substances that are held together by physical rather than chemical ties is known as?

Answer 44

physical mixtures

Question 45

anything that occupies space, has a physical and chemical properties and exists in a solid liquid or gas is?

Answer 45

matter

Question 46

when two or more atoms are joined together chemically what is created?

Answer 46

molecule

Question 47

when a substance gains oxygen the substance is ?

Answer 47

oxidized

Question 48

only products that contain what can have a pH?

Answer 48

water

Question 49

when one chemical changes its state of matter then the change is?

Answer 49

chemical

Question 50

what is made when salt is dissolved in water?

Answer 50

solution

Question 51

a mixture of two or more substances that are united with the aid of a binder is?

Answer 51

emulsion

Question 52

everything known to exist in the universe is either made of matter or what?

Answer 52

energy

Question 53

a new substance formed by chemically combining two or more atoms of different elements is known as?

Answer 53

chemical compounds

Question 54

because it has the ability to dissolve more substances than any other solvent and is known as the universal solvent is?

Answer 54

water

Question 55

a substance that adds hydrogen to a chemical compound or subtracts oxygen from the compound is known as?

Answer 55

reducing agent