Question 1

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide.What is this distance in millimeters?

Accepted Answer

A) 1.15 × 10-8 mm 
B) 1.15 × 10-7 mm 
C) 1.15 × 1013 mm 
D) 1.15 × 1017 mm 
A) 1.15 × 10-8 mm 
B) 1.15 × 10-7 mm 
C) 1.15 × 1013 mm 
D) 1.15 × 1017 mm

Question 2

Convert 1.34 km2 to m2.

Accepted Answer

A) 1340000 m2 
B) 134000 m2 
C) 1.34 × 107 m2 
D) 1.34 × 104 m2 
E) 1340 m2 
A) 1340000 m2 
B) 134000 m2 
C) 1.34 × 107 m2 
D) 1.34 × 104 m2 
E) 1340 m2

Question 3

Choose the homogeneous mixture from the list below.

Accepted Answer

A) chicken noodle soup 
B) air 
C) concrete 
D) trail mix 
E) blood 
A) chicken noodle soup 
B) air 
C) concrete 
D) trail mix 
E) blood

Question 4

What symbol is used to represent the factor 101?

Accepted Answer

A) M 
B) da 
C) μ 
D) n 
A) M 
B) da 
C) μ 
D) n

Question 5

A recipe requires 1.89 litres of milk for a soup base.How many quarts are needed?

Accepted Answer

A) 1.79 qts 
B) 2.00 qts 
C) 1.89 qts 
D) 2.10 qts 
E) 2.15 qts 
A) 1.79 qts 
B) 2.00 qts 
C) 1.89 qts 
D) 2.10 qts 
E) 2.15 qts

Question 6

Round the following number to four significant figures and express the result in standard exponential notation: 229.613

Accepted Answer

A) 2.296 × 102 
B) 22.96 × 10-1 
C) 2.296 × 10-2 
D) 0.2296 × 103 
E) 229.6 
A) 2.296 × 102 
B) 22.96 × 10-1 
C) 2.296 × 10-2 
D) 0.2296 × 103 
E) 229.6

Question 7

What answer should be reported,with the correct number of significant figures,for the following calculation? 
(965.43 × 3.911)+ 9413.4136

Accepted Answer

A) 13189 
B) 13189.2 
C) 1.32 × 104 
D) 1.3 × 104 
E) 1.319 × 104 
A) 13189 
B) 13189.2 
C) 1.32 × 104 
D) 1.3 × 104 
E) 1.319 × 104

Question 8

If a solution has a temperature of 355 K,what is its temperature in degrees Celsius?

Accepted Answer

A) 165 °C 
B) 628 °C 
C) 179 °C 
D) 279 °C 
E) 82 °C 
A) 165 °C 
B) 628 °C 
C) 179 °C 
D) 279 °C 
E) 82 °C

Question 9

Choose the element from the list below.

Accepted Answer

A) sodium chloride 
B) water 
C) carbon dioxide 
D) helium 
E) rust 
A) sodium chloride 
B) water 
C) carbon dioxide 
D) helium 
E) rust

Question 10

Metre is a measure of

Accepted Answer

A) mass. 
B) time. 
C) temperature. 
D) length. 
E) volume. 
A) mass. 
B) time. 
C) temperature. 
D) length. 
E) volume.

Question 11

Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when placed in a graduated cylinder.

Accepted Answer

A) 8.08 g mL-1 
B) 1.38 g mL-1 
C) 12 .4 g mL-1 
D) 18.1 g mL-1 
E) 11.4 g mL-1 
A) 8.08 g mL-1 
B) 1.38 g mL-1 
C) 12 .4 g mL-1 
D) 18.1 g mL-1 
E) 11.4 g mL-1

Question 12

Two or more substances in variable proportions,where the composition is constant throughout,are

Accepted Answer

A) a compound. 
B) an element. 
C) a heterogeneous mixture. 
D) a homogeneous mixture. 
E) a crystalline solid. 
A) a compound. 
B) an element. 
C) a heterogeneous mixture. 
D) a homogeneous mixture. 
E) a crystalline solid.

Question 13

How many mL are in 2.54 L?

Accepted Answer

A) 2.54 × 10-3 mL 
B) 2.54 × 101 mL 
C) 2.54 × 103 mL 
D) 2.54 × 10-1 mL 
E) 2.54 × 102 mL 
A) 2.54 × 10-3 mL 
B) 2.54 × 101 mL 
C) 2.54 × 103 mL 
D) 2.54 × 10-1 mL 
E) 2.54 × 102 mL

Question 14

If a person buys a 1.00 US gallon jug of milk,how much milk does he have in L? (1 US gallon = 4 US quarts; 1 US quart = 2 US pints; 1 US pint = 0.473176 L.)

Accepted Answer

A) 4.00 L 
B) 3.79 L 
C) 4.55 L 
D) 3.50 L 
E) 2.00 L 
A) 4.00 L 
B) 3.79 L 
C) 4.55 L 
D) 3.50 L 
E) 2.00 L

Question 15

How many litres of wine can be held in a wine barrel whose capacity is 22.0 gal? $$( 1 \mathrm { gal } = 4 \mathrm { qt } = 3.7854 \mathrm {~L} )$$

Accepted Answer

A) 1.72 × $10 ^ { - 4 }$ 
B) 0.172 
C) 83.3 
D) 5.81 × $10 ^ { 3 }$ 
E) 5.81 
A) 1.72 × $10 ^ { - 4 }$ 
B) 0.172 
C) 83.3 
D) 5.81 × $10 ^ { 3 }$ 
E) 5.81

Question 16

Ethanol has a freezing point of 159 K.What is the freezing point in °C?

Accepted Answer

A) -81 °C 
B) -78 °C 
C) -62 °C 
D) -114 °C 
E) -195 °C 
A) -81 °C 
B) -78 °C 
C) -62 °C 
D) -114 °C 
E) -195 °C

Question 17

What answer should be reported,with the correct number of significant figures,for the following calculation? 
log(4.28 × 103)- 1

Accepted Answer

A) 2.63144 
B) 2.6314 
C) 2.631 
D) 2.6 
E) 3 
A) 2.63144 
B) 2.6314 
C) 2.631 
D) 2.6 
E) 3

Question 18

What answer should be reported,with the correct number of significant figures,for the following calculation? $$\frac { 10 - 3.8214 } { e ^ { - 5.513 } }$$

Accepted Answer

A) 0.037 
B) 0.0374 
C) 0.03740 
D) 0.037399 
E) 0.0373995 
A) 0.037 
B) 0.0374 
C) 0.03740 
D) 0.037399 
E) 0.0373995

Question 19

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g mL-1.

Accepted Answer

A) 298 g 
B) 1100 g 
C) 907 g 
D) 568 g 
E) 866 g 
A) 298 g 
B) 1100 g 
C) 907 g 
D) 568 g 
E) 866 g

Question 20

Define matter.

Accepted Answer

Matter is anything t

Exam 1: Units of Measurement for Physical and Chemical Change

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide.What is this distance in millimeters?

Convert 1.34 km2 to m2.

Choose the homogeneous mixture from the list below.

What symbol is used to represent the factor 101?

A recipe requires 1.89 litres of milk for a soup base.How many quarts are needed?

Round the following number to four significant figures and express the result in standard exponential notation: 229.613

What answer should be reported,with the correct number of significant figures,for the following calculation? (965.43 × 3.911)+ 9413.4136

If a solution has a temperature of 355 K,what is its temperature in degrees Celsius?

Choose the element from the list below.

Metre is a measure of

Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when placed in a graduated cylinder.

Two or more substances in variable proportions,where the composition is constant throughout,are

How many mL are in 2.54 L?

If a person buys a 1.00 US gallon jug of milk,how much milk does he have in L? (1 US gallon = 4 US quarts; 1 US quart = 2 US pints; 1 US pint = 0.473176 L.)

How many litres of wine can be held in a wine barrel whose capacity is 22.0 gal? (1gal=4qt=3.7854 L)( 1 \mathrm { gal } = 4 \mathrm { qt } = 3.7854 \mathrm {~L} )(1gal=4qt=3.7854 L)

Ethanol has a freezing point of 159 K.What is the freezing point in °C?

What answer should be reported,with the correct number of significant figures,for the following calculation? log(4.28 × 103)- 1

What answer should be reported,with the correct number of significant figures,for the following calculation? 10−3.8214e−5.513\frac { 10 - 3.8214 } { e ^ { - 5.513 } }e−5.51310−3.8214​

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g mL-1.

Define matter.

Atoms and Elements

Molecules,compounds,and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Convert 1.34 km² to m².

What symbol is used to represent the factor 10¹?

How many litres of wine can be held in a wine barrel whose capacity is 22.0 gal? $( 1 \mathrm { gal } = 4 \mathrm { qt } = 3.7854 \mathrm {~L} )$

What answer should be reported,with the correct number of significant figures,for the following calculation? log(4.28 × 10³)- 1

What answer should be reported,with the correct number of significant figures,for the following calculation? $\frac { 10 - 3.8214 } { e ^ { - 5.513 } }$

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g mL^-1.