Question 1

Which one of the following would be classified as a heterogeneous mixture?

Accepted Answer

A) salt water 
B) copper nitrate solution 
C) brass 
D) mix of table salt and black pepper 
E) a sugar solution 
A) salt water 
B) copper nitrate solution 
C) brass 
D) mix of table salt and black pepper 
E) a sugar solution

Question 2

Determine the number of cm3 in 21.0 U.S.qt.

Accepted Answer

A) 19,900 
B) 5.548 
C) 20.0 
D) 0.0199 
E) 10.0 
A) 19,900 
B) 5.548 
C) 20.0 
D) 0.0199 
E) 10.0

Question 3

38.325 lbs = ________ grams.(1 lb = 454 g)

Accepted Answer

The answer of 38.325 lbs = ________ grams.(1 lb =...

Question 4

During a winter blizzard the temperature was -20 °F.What temperature is this on the Celsius scale?

Accepted Answer

A) -29 °C 
B) -94 °C 
C) -6.2 °C 
D) -22 °C 
E) -20 °C 
A) -29 °C 
B) -94 °C 
C) -6.2 °C 
D) -22 °C 
E) -20 °C

Question 5

How many significant figures are in the measurement 5 g?

Accepted Answer

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

Question 6

A chemical change always involves a change in:
I.appearance
II.state
III.composition
IV.temperature

Accepted Answer

A) I and II 
B) I,II,IV 
C) III only 
D) II and IV 
E) all of the above 
A) I and II 
B) I,II,IV 
C) III only 
D) II and IV 
E) all of the above

Question 7

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man?

Accepted Answer

A) 1.2 kg Ca 
B) 5.7 kg Ca 
C) 1.2 × 102 kg Ca 
D) 5.7 × 102 kg 
A) 1.2 kg Ca 
B) 5.7 kg Ca 
C) 1.2 × 102 kg Ca 
D) 5.7 × 102 kg

Question 8

The composition refers to the components of a sample of matter and their relative proportions.

Accepted Answer

A) True 
 B)False

Question 9

The scientific method involves:
I.observations
II.generalizations
III.experiments
IV.deduction
V.induction

Accepted Answer

A) I,III,IV 
B) I,II,III 
C) I,II,III,IV 
D) I,II,III,V 
E) I,III,V 
A) I,III,IV 
B) I,II,III 
C) I,II,III,IV 
D) I,II,III,V 
E) I,III,V

Question 10

An acetylene molecule contains 2 atoms of carbon.The number 2 represents how many significant figures?

Accepted Answer

A) one 
B) two 
C) three 
D) infinite 
A) one 
B) two 
C) three 
D) infinite

Question 11

Crude oil is an example of:

Accepted Answer

A) a compound 
B) an element 
C) a heterogeneous mixture 
D) a homogeneous mixture 
A) a compound 
B) an element 
C) a heterogeneous mixture 
D) a homogeneous mixture

Question 12

The content of a container filled with sand and water would best be described as:

Accepted Answer

A) elements 
B) a homogeneous mixture 
C) a heterogeneous mixture 
D) a compound 
E) a solution 
A) elements 
B) a homogeneous mixture 
C) a heterogeneous mixture 
D) a compound 
E) a solution

Question 13

What is the correct number of significant figures in the answer to the following multiplication: 1.022 × 0.0011.

Accepted Answer

A) one 
B) three 
C) four 
D) two 
E) cannot be determined 
A) one 
B) three 
C) four 
D) two 
E) cannot be determined

Question 14

A homogeneous mixture has regions that are different in composition or phase.

Accepted Answer

A) True 
 B)False

Question 15

A track star ran exactly 400 meters in 45.23 seconds.What was the average speed in miles per hour?

Accepted Answer

A) 19.8 miles/h 
B) 19.78 miles/h 
C) 8.844 miles/h 
D) 0.3297 miles/h 
E) 8.84 miles/h 
A) 19.8 miles/h 
B) 19.78 miles/h 
C) 8.844 miles/h 
D) 0.3297 miles/h 
E) 8.84 miles/h

Question 16

What is 21.1 miles/hour in furlongs/fortnight? (8 furlongs = 1 mile;14 days = 1 fortnight)

Accepted Answer

A) 0.502 furlongs/fortnight 
B) 8.862 × 103 furlongs/fortnight 
C) 5.67 × 104 furlongs/fortnight 
D) 8.86 × 103 furlongs/fortnight 
E) 5.672 × 104 furlongs/fortnight 
A) 0.502 furlongs/fortnight 
B) 8.862 × 103 furlongs/fortnight 
C) 5.67 × 104 furlongs/fortnight 
D) 8.86 × 103 furlongs/fortnight 
E) 5.672 × 104 furlongs/fortnight

Question 17

How many significant figures are there in the answer to the following problem?
57.5 + 0.9933 + 31

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 18

Two hundred thirty-seven pounds of ethanol with a density of 0.789 g/cm3 occupies what volume in U.S.quarts?

Accepted Answer

A) 144 qt 
B) 108 qt 
C) 136 qt 
D) 84.9 qt 
E) 129 qt 
A) 144 qt 
B) 108 qt 
C) 136 qt 
D) 84.9 qt 
E) 129 qt

Question 19

A mass of mercury occupies 0.750 L.What volume would an equal mass of ethanol occupy? The density of mercury is  
And the density of ethanol is 0.789 g mL-1.

Accepted Answer

A) 0.0437 L 
B) 0.0777 L 
C) 12.9 L 
D) 22.9 L 
A) 0.0437 L 
B) 0.0777 L 
C) 12.9 L 
D) 22.9 L

Question 20

One centimeter is equal to:

Accepted Answer

A) 1.09 yards 
B) 0.30 ft 
C) 2.54 inches 
D) 0.0109 yards 
E) 0.109 yards 
A) 1.09 yards 
B) 0.30 ft 
C) 2.54 inches 
D) 0.0109 yards 
E) 0.109 yards

Exam 1: Matter: Its Properties and Measurement

Which one of the following would be classified as a heterogeneous mixture?

Determine the number of cm3 in 21.0 U.S.qt.

38.325 lbs = ________ grams.(1 lb = 454 g)

During a winter blizzard the temperature was -20 °F.What temperature is this on the Celsius scale?

How many significant figures are in the measurement 5 g?

A chemical change always involves a change in: I.appearance II.state III.composition IV.temperature

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man?

The composition refers to the components of a sample of matter and their relative proportions.

The scientific method involves: I.observations II.generalizations III.experiments IV.deduction V.induction

An acetylene molecule contains 2 atoms of carbon.The number 2 represents how many significant figures?

Crude oil is an example of:

The content of a container filled with sand and water would best be described as:

What is the correct number of significant figures in the answer to the following multiplication: 1.022 × 0.0011.

A homogeneous mixture has regions that are different in composition or phase.

A track star ran exactly 400 meters in 45.23 seconds.What was the average speed in miles per hour?

What is 21.1 miles/hour in furlongs/fortnight? (8 furlongs = 1 mile;14 days = 1 fortnight)

How many significant figures are there in the answer to the following problem? 57.5 + 0.9933 + 31

Two hundred thirty-seven pounds of ethanol with a density of 0.789 g/cm3 occupies what volume in U.S.quarts?

A mass of mercury occupies 0.750 L.What volume would an equal mass of ethanol occupy? The density of mercury is And the density of ethanol is 0.789 g mL-1.

One centimeter is equal to:

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Determine the number of cm³ in 21.0 U.S.qt.

Two hundred thirty-seven pounds of ethanol with a density of 0.789 g/cm³ occupies what volume in U.S.quarts?

A mass of mercury occupies 0.750 L.What volume would an equal mass of ethanol occupy? The density of mercury is And the density of ethanol is 0.789 g mL^-1.