Question 1

Which of the following molecules is(are) polar?

Accepted Answer

A)  CH3Cl 
B)  HCN 
C)  both of them 
D)  neither of them 
A)  CH3Cl 
B)  HCN 
C)  both of them 
D)  neither of them

Question 2

Which of the following statements about nitric oxide, NO, is false?

Accepted Answer

A)  NO contains an unpaired electron. 
B)  NO decreases the ability of the blood to carry oxygen. 
C)  NO is an important signaling molecule in the cardiovascular system. 
D)  None, all of the above are true. 
A)  NO contains an unpaired electron. 
B)  NO decreases the ability of the blood to carry oxygen. 
C)  NO is an important signaling molecule in the cardiovascular system. 
D)  None, all of the above are true.

Question 3

Which of the following is the correct formula for dinitrogen trioxide?

Accepted Answer

A)  O2N3 
B)  O3N2 
C)  N2O3 
D)  N3O2 
A)  O2N3 
B)  O3N2 
C)  N2O3 
D)  N3O2

Question 4

The preferred name for HCO3- is hydrogen carbonate. What is the common name for this ion?

Accepted Answer

A)  bicarbonate 
B)  dicarbonate 
C)  bicarbide 
D)  dicarbide 
A)  bicarbonate 
B)  dicarbonate 
C)  bicarbide 
D)  dicarbide

Question 5

Which of the following is true of ionic compounds?

Accepted Answer

A)  They are liquids at room temperature. 
B)  They are solids in which individual molecules are present. 
C)  They are solids in which both cations and anions are present. 
D)  Depending on the compound any one of the above may apply. 
A)  They are liquids at room temperature. 
B)  They are solids in which individual molecules are present. 
C)  They are solids in which both cations and anions are present. 
D)  Depending on the compound any one of the above may apply.

Question 6

Laughing gas, sometimes called nitrous oxide, has the formula N2O. What is the proper chemical name for nitrous oxide?

Accepted Answer

A)  nitrogen oxide 
B)  nitrogen dioxide 
C)  dinitrogen oxide 
D)  dinitrogen oxygen 
A)  nitrogen oxide 
B)  nitrogen dioxide 
C)  dinitrogen oxide 
D)  dinitrogen oxygen

Question 7

Examine the following image representing the structure of a compound.  
-Which of the following is most likely the type of bonding in this compound?

Accepted Answer

A)  ionic 
B)  nonpolar covalent 
C)  polar covalent 
D)  electronegative 
A)  ionic 
B)  nonpolar covalent 
C)  polar covalent 
D)  electronegative

Question 8

What is the correct formula for sodium fluoride?

Accepted Answer

A)  NaFI2 
B)  NaF 
C)  Na2F 
D)  Na2F2 
A)  NaFI2 
B)  NaF 
C)  Na2F 
D)  Na2F2

Question 9

Which of the following elements is most electronegative?

Accepted Answer

A)  B 
B)  C 
C)  N 
D)  O 
A)  B 
B)  C 
C)  N 
D)  O

Question 10

Which of the following bonds is the most polar?

Accepted Answer

A)  H-F 
B)  H-Cl 
C)  H-Br 
D)  H-I 
A)  H-F 
B)  H-Cl 
C)  H-Br 
D)  H-I

Question 11

What electronegativity difference is associated with a nonpolar covalent bond?

Accepted Answer

A)  exactly 0 
B)  less than 0.5 
C)  between 0.5 and 1.9 
D)  greater than 1.9 
A)  exactly 0 
B)  less than 0.5 
C)  between 0.5 and 1.9 
D)  greater than 1.9

Question 12

What is the common name of Cu+?

Accepted Answer

A)  copper ion 
B)  cuprate ion 
C)  cupric ion 
D)  cuprous ion 
A)  copper ion 
B)  cuprate ion 
C)  cupric ion 
D)  cuprous ion

Question 13

What bond angle is most closely associated with a trigonal planar distribution of electron density?

Accepted Answer

A)  90° 
B)  109.5° 
C)  120° 
D)  180° 
A)  90° 
B)  109.5° 
C)  120° 
D)  180°

Question 14

What is the correct systematic name for the compound with the formula CuCl2?

Accepted Answer

A)  cupric chloride 
B)  cuprous chloride 
C)  copper(II) chloride 
D)  copper(II) chlorine 
A)  cupric chloride 
B)  cuprous chloride 
C)  copper(II) chloride 
D)  copper(II) chlorine

Question 15

Which of the following compounds is used as a radiopaque medium for X-ray work?

Accepted Answer

A)  BaSO4 
B)  CaSO4 
C)  FeSO4 
D)  MgSO4 
A)  BaSO4 
B)  CaSO4 
C)  FeSO4 
D)  MgSO4

Question 16

For which types of elements do we sometimes use the "ous/ic" system in naming ions?

Accepted Answer

A)  alkali metals 
B)  halogens 
C)  noble gases 
D)  transition metals 
A)  alkali metals 
B)  halogens 
C)  noble gases 
D)  transition metals

Question 17

A covalent bond is associated with which of the following?

Accepted Answer

A)  interactions between nuclei 
B)  the sharing of electrons 
C)  the transfer of electrons 
D)  all of these 
A)  interactions between nuclei 
B)  the sharing of electrons 
C)  the transfer of electrons 
D)  all of these

Question 18

For which of the following atoms do we not try to apply the octet rule?

Accepted Answer

A)  oxygen 
B)  nickel 
C)  sodium 
D)  xenon 
A)  oxygen 
B)  nickel 
C)  sodium 
D)  xenon

Question 19

Which of the following molecules is(are) polar?

Accepted Answer

A)  BCl3 
B)  NH3 
C)  both of them 
D)  neither of them 
A)  BCl3 
B)  NH3 
C)  both of them 
D)  neither of them

Question 20

Which of the following molecules is(are) polar?

Accepted Answer

A)  CH2Cl-CH2Cl 
B)  CH3-CHCl2 
C)  both a and b 
D)  neither a nor b 
A)  CH2Cl-CH2Cl 
B)  CH3-CHCl2 
C)  both a and b 
D)  neither a nor b

Exam 3: Chemical Bonds

Which of the following molecules is(are) polar?

Which of the following statements about nitric oxide, NO, is false?

Which of the following is the correct formula for dinitrogen trioxide?

The preferred name for HCO3- is hydrogen carbonate. What is the common name for this ion?

Which of the following is true of ionic compounds?

Laughing gas, sometimes called nitrous oxide, has the formula N2O. What is the proper chemical name for nitrous oxide?

Examine the following image representing the structure of a compound. -Which of the following is most likely the type of bonding in this compound?

What is the correct formula for sodium fluoride?

Which of the following elements is most electronegative?

Which of the following bonds is the most polar?

What electronegativity difference is associated with a nonpolar covalent bond?

What is the common name of Cu+?

What bond angle is most closely associated with a trigonal planar distribution of electron density?

What is the correct systematic name for the compound with the formula CuCl2?

Which of the following compounds is used as a radiopaque medium for X-ray work?

For which types of elements do we sometimes use the "ous/ic" system in naming ions?

A covalent bond is associated with which of the following?

For which of the following atoms do we not try to apply the octet rule?

Which of the following molecules is(are) polar?

Which of the following molecules is(are) polar?

Matter, Energy, and Measurement

Atoms

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes and Alkynes

Benzene and Its Derivatives

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

The preferred name for HCO₃^- is hydrogen carbonate. What is the common name for this ion?

Laughing gas, sometimes called nitrous oxide, has the formula N₂O. What is the proper chemical name for nitrous oxide?

What is the common name of Cu⁺?

What is the correct systematic name for the compound with the formula CuCl₂?