Question 1

Which of the following is true of a compound

Accepted Answer

A) A compound is a substance composed of atoms of two or more elements chemically united in a fixed ratio. 
B) A compound is a substance that cannot be separated into simpler substances by chemical means. 
C) A compound is combination of two or more substances in which the substances retain their distinct identities. 
D)  A compound must be heterogeneous. 
E)  A compound must be a solid at room temperature. 
A) A compound is a substance composed of atoms of two or more elements chemically united in a fixed ratio. 
B) A compound is a substance that cannot be separated into simpler substances by chemical means. 
C) A compound is combination of two or more substances in which the substances retain their distinct identities. 
D)  A compound must be heterogeneous. 
E)  A compound must be a solid at room temperature.

Question 2

An automobile engine has a piston displacement of 1,600 cm3. Express this volume in cubic inches. (1 in = 2.54 cm)

Accepted Answer

A)  .0998 in3 
B)  9.8 in3 
C)  98 in3 
D)  9980 in3 
E)  None of the above 
A)  .0998 in3 
B)  9.8 in3 
C)  98 in3 
D)  9980 in3 
E)  None of the above

Question 3

Alcohol evaporating is a physical change.

Accepted Answer

A) True 
 B)False

Question 4

If a car has an EPA mileage rating of 30 miles per gallon, what is this rating in kilometers per liter (1 L = 1.06 qt)

Accepted Answer

A)  200 km/L 
B)  180 km/L 
C)  70 km/L 
D)  13 km/L 
E)  11 km/L 
A)  200 km/L 
B)  180 km/L 
C)  70 km/L 
D)  13 km/L 
E)  11 km/L

Question 5

The diameter of Earth is 12.7 Mm. Express this diameter in centimeters.

Accepted Answer

A)  1.27 * 105 cm 
B)  1.27 * 106 cm 
C)  1.27 * 107 cm 
D)  1.27* 108 cm 
E)  1.27 * 109 cm 
A)  1.27 * 105 cm 
B)  1.27 * 106 cm 
C)  1.27 * 107 cm 
D)  1.27* 108 cm 
E)  1.27 * 109 cm

Question 6

Convert 7.2 cm3 to mm3.

Accepted Answer

A)  7.2 x 101 mm3 
B)  7.2 x 10-5 mm3 
C)  7.2 x 10-3 mm3 
D)  7.2 x 102 mm3 
E)  7.2 x 103 mm3 
A)  7.2 x 101 mm3 
B)  7.2 x 10-5 mm3 
C)  7.2 x 10-3 mm3 
D)  7.2 x 102 mm3 
E)  7.2 x 103 mm3

Question 7

What is the density of copper if 11.8 cm3 of copper has a mass of 105.2 g

Accepted Answer

A)  7.92 g/cm3 
B)  8.92 g/cm3 
C)  9.92 g/cm3 
D)  10.92 g/cm3 
E)  None of the above 
A)  7.92 g/cm3 
B)  8.92 g/cm3 
C)  9.92 g/cm3 
D)  10.92 g/cm3 
E)  None of the above

Question 8

The SI prefixes micro and milli represent, respectively:

Accepted Answer

A)  106 and 10-6 
B)  10-3 and 106 
C)  103 and 10-6 
D)  10-3 and 109 
E)  10-6 and 10-3 
A)  106 and 10-6 
B)  10-3 and 106 
C)  103 and 10-6 
D)  10-3 and 109 
E)  10-6 and 10-3

Question 9

Seven-Up is a pure substance.

Accepted Answer

A) True 
 B)False

Question 10

Melting point is an extensive property.

Accepted Answer

A) True 
 B)False

Question 11

Give the correct number of significant figures and units to the problem below. 3.4 x 10-2 mg + 448 µg =

Accepted Answer

A)  0.48 mg 
B)  0.482 mg 
C)  4.5 mg 
D)  4.48 mg 
E)  4.5 x 102 mg 
A)  0.48 mg 
B)  0.482 mg 
C)  4.5 mg 
D)  4.48 mg 
E)  4.5 x 102 mg

Question 12

The number 1.050 * 109 has how many significant figures

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  9 
E)  13 
A)  2 
B)  3 
C)  4 
D)  9 
E)  13

Question 13

Give the correct number of significant figures to the problem below.4.5 x 1014 / 8.3 x 108 =

Accepted Answer

A)  5.4 x 1021 
B)  5.4 x 1022 
C)  5.4 x 106 
D)  5.4 x 1014 
E)  5.4 x 105 
A)  5.4 x 1021 
B)  5.4 x 1022 
C)  5.4 x 106 
D)  5.4 x 1014 
E)  5.4 x 105

Question 14

A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron The following densities at 25$\circ$C are provided: agnesium, 1.7 g/cm3 ; graphite, 1.8 g/cm3 ; iron, 7.9 g/cm3.

Accepted Answer

A)  110 g 
B)  2120 g 
C)  6870 g 
D)  34 g 
E)  none of them are within 10 g of the right answer. 
A)  110 g 
B)  2120 g 
C)  6870 g 
D)  34 g 
E)  none of them are within 10 g of the right answer.

Question 15

The "escape velocity" from Earth (the speed required to escape Earth's gravity) is 2.5 * 104 miles per hour. What is this speed in m/s (1 mile = 1609 m)

Accepted Answer

A)  4.2 * 10-3 m/s 
B)  6.9 m/s 
C)  4.2 * 102 m/s 
D)  1.1 * 104 m/s 
E)  4.0 * 107 m/s 
A)  4.2 * 10-3 m/s 
B)  6.9 m/s 
C)  4.2 * 102 m/s 
D)  1.1 * 104 m/s 
E)  4.0 * 107 m/s

Question 16

Give the correct number of significant figures and units to the problem below. (3.45 m + 2.78 m)/ 565 s =

Accepted Answer

A)  1.10 x 10-2 m2/s 
B)  1.10 x 10-2 m/s 
C)  1.10 x 10-2 s-1 
D)  1.10 x 10-2 s 
E)  1.10 x 10-2 m2 
A)  1.10 x 10-2 m2/s 
B)  1.10 x 10-2 m/s 
C)  1.10 x 10-2 s-1 
D)  1.10 x 10-2 s 
E)  1.10 x 10-2 m2

Question 17

If the price of gasoline is $3.85 per U.S. gallon, what is the cost per liter (1 L = 1.06 qt)

Accepted Answer

A)  $1.02/L 
B)  $14.60/L 
C)  $0.96/L 
D)  $3.85/L 
E)  $3.63/L 
A)  $1.02/L 
B)  $14.60/L 
C)  $0.96/L 
D)  $3.85/L 
E)  $3.63/L

Question 18

How many square kilometers are equivalent to 28.5 cm2

Accepted Answer

A)  2.85 * 10-9 km2 
B)  2.85 * 10-6 km2 
C)  285 km2 
D)  2.85 * 10-4 km2 
E)  none of these 
A)  2.85 * 10-9 km2 
B)  2.85 * 10-6 km2 
C)  285 km2 
D)  2.85 * 10-4 km2 
E)  none of these

Question 19

The formation of snowflakes is a physical change.

Accepted Answer

A) True 
 B)False

Question 20

A long course triathlon entails a 2.0 mile swim, an 85.5 mile bike ride and a 15.0 mile run. What is the total distance in kilometers for the triathlon

Accepted Answer

A)  160 km 
B)  165 km 
C)  103 km 
D)  164.9 km 
E)  102.5 km 
A)  160 km 
B)  165 km 
C)  103 km 
D)  164.9 km 
E)  102.5 km

Exam 1: Chemistry: The Study of Change

Which of the following is true of a compound

An automobile engine has a piston displacement of 1,600 cm3. Express this volume in cubic inches. (1 in = 2.54 cm)

Alcohol evaporating is a physical change.

If a car has an EPA mileage rating of 30 miles per gallon, what is this rating in kilometers per liter (1 L = 1.06 qt)

The diameter of Earth is 12.7 Mm. Express this diameter in centimeters.

Convert 7.2 cm3 to mm3.

What is the density of copper if 11.8 cm3 of copper has a mass of 105.2 g

The SI prefixes micro and milli represent, respectively:

Seven-Up is a pure substance.

Melting point is an extensive property.

Give the correct number of significant figures and units to the problem below. 3.4 x 10-2 mg + 448 µg =

The number 1.050 * 109 has how many significant figures

Give the correct number of significant figures to the problem below.4.5 x 1014 / 8.3 x 108 =

A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron The following densities at 25 ∘\circ∘ C are provided: agnesium, 1.7 g/cm3 ; graphite, 1.8 g/cm3 ; iron, 7.9 g/cm3.

The "escape velocity" from Earth (the speed required to escape Earth's gravity) is 2.5 * 104 miles per hour. What is this speed in m/s (1 mile = 1609 m)

Give the correct number of significant figures and units to the problem below. (3.45 m + 2.78 m)/ 565 s =

If the price of gasoline is $3.85 per U.S. gallon, what is the cost per liter (1 L = 1.06 qt)

How many square kilometers are equivalent to 28.5 cm2

The formation of snowflakes is a physical change.

A long course triathlon entails a 2.0 mile swim, an 85.5 mile bike ride and a 15.0 mile run. What is the total distance in kilometers for the triathlon

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

An automobile engine has a piston displacement of 1,600 cm³. Express this volume in cubic inches. (1 in = 2.54 cm)

Convert 7.2 cm³ to mm³.

What is the density of copper if 11.8 cm³ of copper has a mass of 105.2 g

Give the correct number of significant figures and units to the problem below. 3.4 x 10^-2 mg + 448 µg =

The number 1.050 * 10⁹ has how many significant figures

Give the correct number of significant figures to the problem below.4.5 x 10¹⁴ / 8.3 x 10⁸ =

A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron The following densities at 25^$\circ$C are provided: agnesium, 1.7 g/cm³ ; graphite, 1.8 g/cm³ ; iron, 7.9 g/cm³.

The "escape velocity" from Earth (the speed required to escape Earth's gravity) is 2.5 * 10⁴miles per hour. What is this speed in m/s (1 mile = 1609 m)

How many square kilometers are equivalent to 28.5 cm²