Question 1

A solution can be distinguished from a compound by its

Accepted Answer

A)  variable composition 
B)  liquid state 
C)  heterogeneous nature 
D)  lack of color 
A)  variable composition 
B)  liquid state 
C)  heterogeneous nature 
D)  lack of color

Question 2

The state of matter for an object that has a definite volume but not a definite shape is

Accepted Answer

A)  solid 
B)  liquid 
C)  gaseous 
D)  elemental 
E)  mixed 
A)  solid 
B)  liquid 
C)  gaseous 
D)  elemental 
E)  mixed

Question 3

The state of matter for an object that has neither definite shape nor definite volume is

Accepted Answer

A)  solid 
B)  liquid 
C)  gaseous 
D)  elemental 
E)  mixed 
A)  solid 
B)  liquid 
C)  gaseous 
D)  elemental 
E)  mixed

Question 4

Gold is a relatively soft metal, which is a chemical property of the substance gold.

Accepted Answer

A) True 
 B)False

Question 5

How many of the following are compounds? (Check all that apply.)

Accepted Answer

A)  water 
B)  air 
C)  carbon 
D)  brass 
E) gold
F) ammonia 
A)  water 
B)  air 
C)  carbon 
D)  brass 
E) gold
F) ammonia

Question 6

In a chemical change,

Accepted Answer

A)  a phase change must occur 
B)  the original material can never be regenerated 
C)  a phase change never occurs 
D)  the products are different substances from the starting materials 
A)  a phase change must occur 
B)  the original material can never be regenerated 
C)  a phase change never occurs 
D)  the products are different substances from the starting materials

Question 7

Two or more atoms bonded together always form a compound.

Accepted Answer

A) True 
 B)False

Question 8

Dry ice subliming (turning from a solid straight into a gas) is an example of a chemical change.

Accepted Answer

A) True 
 B)False

Question 9

How many of the following are pure substances? (Check all that apply.)

Accepted Answer

A)  water 
B)  air 
C)  carbon 
D)  brass 
E) gold
F) ammonia 
A)  water 
B)  air 
C)  carbon 
D)  brass 
E) gold
F) ammonia

Question 10

How many of the following are compounds? H2O, N2O4, NaOH, MnO2, HF

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 11

Classify each of the following as a physical (P) or a chemical (C) change.
______________ a. cooking an egg
______________ b. boiling water
______________ c. ironing a shirt
______________ d. burning gasoline
______________ e. decomposing water
______________ f. evaporating alcohol
______________ g. sanding a table top
______________ h. grinding grain
______________ i. fermenting fruit juice
______________ j. dissolving sugar in water

Accepted Answer

a. C
b. P

Question 12

A __________ change involves a change in the fundamental components of the substance; a given substance changes into a different substance or substances.

Accepted Answer

A)  chemical 
B)  physical 
C)  mixed 
D)  potential 
E)  kinetic 
A)  chemical 
B)  physical 
C)  mixed 
D)  potential 
E)  kinetic

Question 13

A(n) ___________ always has the same composition.

Accepted Answer

The answer of A(n) ___________ always has the same composition....

Question 14

Which of the following is a chemical change?

Accepted Answer

A)  Water condenses on a mirror. 
B)  A damp towel dries. 
C)  Peanuts are crushed. 
D)  A "tin" can rusts. 
E)  At least two of the above (a-d) exhibit a chemical change. 
A)  Water condenses on a mirror. 
B)  A damp towel dries. 
C)  Peanuts are crushed. 
D)  A "tin" can rusts. 
E)  At least two of the above (a-d) exhibit a chemical change.

Question 15

Which of the following is a homogeneous mixture?

Accepted Answer

A)  pure water 
B)  gasoline 
C)  jar of jelly beans 
D)  soil 
E)  copper metal 
A)  pure water 
B)  gasoline 
C)  jar of jelly beans 
D)  soil 
E)  copper metal

Question 16

A __________ change involves a change in one or more physical properties, but no change in the fundamental components that make up the substance.

Accepted Answer

A)  chemical 
B)  physical 
C)  mixed 
D)  potential 
E)  kinetic 
A)  chemical 
B)  physical 
C)  mixed 
D)  potential 
E)  kinetic

Question 17

If iodine melts at 114°C and boils at 184°C, what is its physical state at 120°C?

Accepted Answer

The answer of If iodine melts at 114°C and boils...

Question 18

Metal rusting is an example of a chemical change.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is a chemical change?

Accepted Answer

A)  water boiling 
B)  gasoline evaporating 
C)  butter melting 
D)  sugar dissolving in water 
E)  paper burning 
A)  water boiling 
B)  gasoline evaporating 
C)  butter melting 
D)  sugar dissolving in water 
E)  paper burning

Question 20

If iodine melts at 114°C and boils at 184°C, what is its physical state at 250°C?

Accepted Answer

The answer of If iodine melts at 114°C and boils...

Exam 3: Matter

A solution can be distinguished from a compound by its

The state of matter for an object that has a definite volume but not a definite shape is

The state of matter for an object that has neither definite shape nor definite volume is

Gold is a relatively soft metal, which is a chemical property of the substance gold.

How many of the following are compounds? (Check all that apply.)

In a chemical change,

Two or more atoms bonded together always form a compound.

Dry ice subliming (turning from a solid straight into a gas) is an example of a chemical change.

How many of the following are pure substances? (Check all that apply.)

How many of the following are compounds? H2O, N2O4, NaOH, MnO2, HF

A __________ change involves a change in the fundamental components of the substance; a given substance changes into a different substance or substances.

A(n) ___________ always has the same composition.

Which of the following is a chemical change?

Which of the following is a homogeneous mixture?

A __________ change involves a change in one or more physical properties, but no change in the fundamental components that make up the substance.

If iodine melts at 114°C and boils at 184°C, what is its physical state at 120°C?

Metal rusting is an example of a chemical change.

Which of the following is a chemical change?

If iodine melts at 114°C and boils at 184°C, what is its physical state at 250°C?

Chemistry: an Introduction

Measurements and Calculations

Chemical Foundations: Elements, Atoms, and Ions

Nomenclature

Chemical Reactions: an Introduction

Reactions in Aqueous Solutions

Chemical Composition

Chemical Quantities

Energy

Modern Atomic Theory

Chemical Bonding

Gases

Liquids and Solids

Solutions

Acids and Bases

Equilibrium

Oxidation-Reduction Reactions and Electrochemistry

Radioactivity and Nuclear Energy

Organic Chemistry

Biochemistry

Filters

How many of the following are compounds? H₂O, N₂O₄, NaOH, MnO₂, HF