Question 1

Match the atomic and ion symbols with the correct terms.

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e B

Question 2

Which of the following is the best name for the compound SF6, a potent greenhouse gas?

Accepted Answer

A)  sulfur fluorine 
B)  sulfur fluoride 
C)  sulfur hexafluoride 
D)  sulfur pentafluoride 
E)  monosulfur fluoride 
A)  sulfur fluorine 
B)  sulfur fluoride 
C)  sulfur hexafluoride 
D)  sulfur pentafluoride 
E)  monosulfur fluoride C

Question 3

What is the H-C-H bond angle of each carbon in ethylene (C2H4)?

Accepted Answer

A)  Both are 180º. 
B)  Both are 120º. 
C)  Both are 109.5º. 
D)  One is 180º and the other is 109.5º. 
E)  One is 120º and the other is 109.5º. 
A)  Both are 180º. 
B)  Both are 120º. 
C)  Both are 109.5º. 
D)  One is 180º and the other is 109.5º. 
E)  One is 120º and the other is 109.5º. B

Question 4

Does propane or octane (C8H18) exhibit stronger dispersion forces?

Accepted Answer

A)  Propane, because the smaller molecules can get closer to one another 
B)  Propane, because propane has a larger permanent dipole 
C)  Octane, because octane has a larger permanent dipole 
D)  Octane, because octane has more surface area 
E)  They both have the same amount of forces 
A)  Propane, because the smaller molecules can get closer to one another 
B)  Propane, because propane has a larger permanent dipole 
C)  Octane, because octane has a larger permanent dipole 
D)  Octane, because octane has more surface area 
E)  They both have the same amount of forces

Question 5

Which of the molecules do not have a permanent dipole?

Accepted Answer

A)   
B)   
C)   
D)   
E)   
A)   
B)   
C)   
D)   
E)

Question 6

In molecules with permanent dipoles, _______ are the attraction of the positive end of a dipole on one molecule with the negative end of the dipole on another molecule.

Accepted Answer

A)  ionic bonding 
B)  covalent bonding 
C)  dispersion forces 
D)  dipole-dipole forces 
E)  hydrogen bonding forces 
A)  ionic bonding 
B)  covalent bonding 
C)  dispersion forces 
D)  dipole-dipole forces 
E)  hydrogen bonding forces

Question 7

The electronegativity difference between C and H is ____ and therefore the C-H bond is a(n)____ bond.

Accepted Answer

A)  0.4; nonpolar covalent 
B)  0.4; polar covalent 
C)  4.6; ionic 
D)  (F1F1F1S1F1F1F100.4; nonpolar covalent) 
E)  4.6; polar covalent 
A)  0.4; nonpolar covalent 
B)  0.4; polar covalent 
C)  4.6; ionic 
D)  (F1F1F1S1F1F1F100.4; nonpolar covalent) 
E)  4.6; polar covalent

Question 8

"Laughing gas" has the formula N2O. Which of the following is the best name for this compound?

Accepted Answer

A)  nitrogen oxygen 
B)  nitrogen oxide 
C)  nitrogen dioxide 
D)  dinitrogen monoxide 
E)  nitrogen(II) oxide 
A)  nitrogen oxygen 
B)  nitrogen oxide 
C)  nitrogen dioxide 
D)  dinitrogen monoxide 
E)  nitrogen(II) oxide

Question 9

People on a low salt diet use a potassium chloride substitute for sodium chloride. Which of the following is a valid ionic formula for potassium chloride?

Accepted Answer

A)  NaCl 
B)  NaCl2 
C)  KCl2 
D)  KCl 
E)  K2Cl 
A)  NaCl 
B)  NaCl2 
C)  KCl2 
D)  KCl 
E)  K2Cl

Question 10

How many electron groups do the carbons in ethylene (C2H4) have?

Accepted Answer

A)  They both have 1. 
B)  They both have 2. 
C)  They both have 3. 
D)  They both have 4. 
E)  One has 2 and the other has 4. 
A)  They both have 1. 
B)  They both have 2. 
C)  They both have 3. 
D)  They both have 4. 
E)  One has 2 and the other has 4.

Question 11

What is the electron geometry of the carbon in formaldehyde, shown below?

Accepted Answer

A)  linear 
B)  bent 
C)  trigonal planar 
D)  trigonal pyramidal 
E)  tetrahedral 
A)  linear 
B)  bent 
C)  trigonal planar 
D)  trigonal pyramidal 
E)  tetrahedral

Question 12

What is the molecular shape of the nitrogen indicated with arrow II?

Accepted Answer

A)  bent 
B)  trigonal planar 
C)  trigonal pyramidal 
D)  tetrahedral 
E)  linear 
A)  bent 
B)  trigonal planar 
C)  trigonal pyramidal 
D)  tetrahedral 
E)  linear

Question 13

Which of the structures are covalent molecules?

Accepted Answer

A)  I and V 
B)  II, III, and IV 
C)  II and IV 
D)  V only 
E)  All of the choices are covalent molecules. 
A)  I and V 
B)  II, III, and IV 
C)  II and IV 
D)  V only 
E)  All of the choices are covalent molecules.

Question 14

What is the molecular shape of dichloromethane (CH2Cl2)?

Accepted Answer

A)  linear 
B)  bent 
C)  trigonal planar 
D)  trigonal pyramidal 
E)  tetrahedral 
A)  linear 
B)  bent 
C)  trigonal planar 
D)  trigonal pyramidal 
E)  tetrahedral

Question 15

In an ionic compound,

Accepted Answer

A)  nonmetals share electrons. 
B)  nonmetals donate electrons to metals. 
C)  metals are attracted to one another. 
D)  metals share electrons. 
E)  cations and anions are attracted to one another. 
A)  nonmetals share electrons. 
B)  nonmetals donate electrons to metals. 
C)  metals are attracted to one another. 
D)  metals share electrons. 
E)  cations and anions are attracted to one another.

Question 16

______ is the sharing of electrons between two atoms and is much stronger than intermolecular forces.

Accepted Answer

A)  ionic bonding 
B)  covalent bonding 
C)  dispersion forces 
D)  dipole-dipole forces 
E)  hydrogen bonding forces 
A)  ionic bonding 
B)  covalent bonding 
C)  dispersion forces 
D)  dipole-dipole forces 
E)  hydrogen bonding forces

Question 17

The total number of valence electrons in methane is

Accepted Answer

A)  2. 
B)  4. 
C)  8. 
D)  16. 
E)  40. 
A)  2. 
B)  4. 
C)  8. 
D)  16. 
E)  40.

Question 18

Which of the following steps is done first to determine the molecular shape of dichloromethane (CH2Cl2)?

Accepted Answer

A)  Calculate the molecular weight. 
B)  Look up the bond angle of a H-C-H bond. 
C)  Determine the electron geometry. 
D)  Construct the Lewis structure. 
E)  The molecular shape can be determined without doing any prior steps. 
A)  Calculate the molecular weight. 
B)  Look up the bond angle of a H-C-H bond. 
C)  Determine the electron geometry. 
D)  Construct the Lewis structure. 
E)  The molecular shape can be determined without doing any prior steps.

Question 19

The arrow is pointing to a(n)

Accepted Answer

A)    triple bond. 
B)  double bond. 
C)  single bond. 
D)  electron. 
E)  valence shell. 
A)    triple bond. 
B)  double bond. 
C)  single bond. 
D)  electron. 
E)  valence shell.

Question 20

Which of the following is a challenge in developing drugs for the treatment of breast cancer?

Accepted Answer

A)  There are no challenges. Several drugs have been developed for this purpose. 
B)  The structure of estradiol is unknown. 
C)  The structure of the estrogen receptor is unknown. 
D)  The estrogen receptor on the breast cancer cell must be blocked but not the receptors in other parts of the body. 
E)  For some reason, most breast cancer cells are resistant to treatment with current drugs. 
A)  There are no challenges. Several drugs have been developed for this purpose. 
B)  The structure of estradiol is unknown. 
C)  The structure of the estrogen receptor is unknown. 
D)  The estrogen receptor on the breast cancer cell must be blocked but not the receptors in other parts of the body. 
E)  For some reason, most breast cancer cells are resistant to treatment with current drugs.

Match the atomic and ion symbols with the correct terms.

Which of the following is the best name for the compound SF₆, a potent greenhouse gas?

What is the H-C-H bond angle of each carbon in ethylene (C₂H₄)?

Does propane or octane (C₈H₁₈) exhibit stronger dispersion forces?

Which of the molecules do not have a permanent dipole?

In molecules with permanent dipoles, _______ are the attraction of the positive end of a dipole on one molecule with the negative end of the dipole on another molecule.

The electronegativity difference between C and H is and therefore the C-H bond is a(n) bond.

"Laughing gas" has the formula N₂O. Which of the following is the best name for this compound?

People on a low salt diet use a potassium chloride substitute for sodium chloride. Which of the following is a valid ionic formula for potassium chloride?

How many electron groups do the carbons in ethylene (C₂H₄) have?

What is the electron geometry of the carbon in formaldehyde, shown below?

What is the molecular shape of the nitrogen indicated with arrow II?

Which of the structures are covalent molecules?

What is the molecular shape of dichloromethane (CH₂Cl₂)?

In an ionic compound,

______ is the sharing of electrons between two atoms and is much stronger than intermolecular forces.

The total number of valence electrons in methane is

Which of the following steps is done first to determine the molecular shape of dichloromethane (CH₂Cl₂)?

The arrow is pointing to a(n)

Which of the following is a challenge in developing drugs for the treatment of breast cancer?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 3: Compounds and Molecules

Match the atomic and ion symbols with the correct terms.

Which of the following is the best name for the compound SF6, a potent greenhouse gas?

What is the H-C-H bond angle of each carbon in ethylene (C2H4)?

Does propane or octane (C8H18) exhibit stronger dispersion forces?

Which of the molecules do not have a permanent dipole?

In molecules with permanent dipoles, _______ are the attraction of the positive end of a dipole on one molecule with the negative end of the dipole on another molecule.

The electronegativity difference between C and H is ____ and therefore the C-H bond is a(n)____ bond.

"Laughing gas" has the formula N2O. Which of the following is the best name for this compound?

People on a low salt diet use a potassium chloride substitute for sodium chloride. Which of the following is a valid ionic formula for potassium chloride?

How many electron groups do the carbons in ethylene (C2H4) have?

What is the electron geometry of the carbon in formaldehyde, shown below?

What is the molecular shape of the nitrogen indicated with arrow II?

Which of the structures are covalent molecules?

What is the molecular shape of dichloromethane (CH2Cl2)?

In an ionic compound,

______ is the sharing of electrons between two atoms and is much stronger than intermolecular forces.

The total number of valence electrons in methane is

Which of the following steps is done first to determine the molecular shape of dichloromethane (CH2Cl2)?

The arrow is pointing to a(n)

Which of the following is a challenge in developing drugs for the treatment of breast cancer?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Which of the following is the best name for the compound SF₆, a potent greenhouse gas?

What is the H-C-H bond angle of each carbon in ethylene (C₂H₄)?

Does propane or octane (C₈H₁₈) exhibit stronger dispersion forces?

The electronegativity difference between C and H is and therefore the C-H bond is a(n) bond.

"Laughing gas" has the formula N₂O. Which of the following is the best name for this compound?

How many electron groups do the carbons in ethylene (C₂H₄) have?

What is the molecular shape of dichloromethane (CH₂Cl₂)?

Which of the following steps is done first to determine the molecular shape of dichloromethane (CH₂Cl₂)?