Question 1

In addition to single bonds, which of the following electron groups do the carbon atoms in ethylene (C2H4)have?

Accepted Answer

A)  a double bond 
B)  a triple bond 
C)  a single electron 
D)  a lone pair of electrons 
E)  None of the above electron groups is correct. 
A)  a double bond 
B)  a triple bond 
C)  a single electron 
D)  a lone pair of electrons 
E)  None of the above electron groups is correct. A

Question 2

Which of the bonds in the following molecule are polar covalent?

Accepted Answer

A)  C-H only 
B)  C-N only 
C)  C=O only 
D)  C-N and C=O 
E)  C-N, C=O, and N-H 
A)  C-H only 
B)  C-N only 
C)  C=O only 
D)  C-N and C=O 
E)  C-N, C=O, and N-H E

Question 3

What is the electron geometry of each carbon in ethylene (C2H4)?

Accepted Answer

A)  They are both linear. 
B)  They are both trigonal planar. 
C)  They are both tetrahedral. 
D)  One is linear, and the other is trigonal planar. 
E)  One is linear, and the other is tetrahedral. 
A)  They are both linear. 
B)  They are both trigonal planar. 
C)  They are both tetrahedral. 
D)  One is linear, and the other is trigonal planar. 
E)  One is linear, and the other is tetrahedral. B

Question 4

Ethanol is an alcohol found in wine and beer, and it is also used as a fuel.It has the structure shown below.What is the strongest type of intermolecular interaction attracting molecules of ethanol together?

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 5

What is meant by the following symbols?

Accepted Answer

A)  This means that the hydrogen has donated an electron to the oxygen. 
B)  This means that the oxygen has donated an electron to the hydrogen. 
C)  This means that the oxygen is pulling electrons toward itself and is partially negative. 
D)  This means that the hydrogen is pulling electrons toward itself and is partially positive. 
E)  These are not symbols used in chemistry. 
A)  This means that the hydrogen has donated an electron to the oxygen. 
B)  This means that the oxygen has donated an electron to the hydrogen. 
C)  This means that the oxygen is pulling electrons toward itself and is partially negative. 
D)  This means that the hydrogen is pulling electrons toward itself and is partially positive. 
E)  These are not symbols used in chemistry.

Question 6

What is the electron geometry of the nitrogen atom in nitrogen trichloride (NCl3)?

Accepted Answer

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

Question 7

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

Accepted Answer

A)  1.0; nonpolar covalent 
B)  6.0; polar covalent 
C)  -1.0; ionic 
D)  6.0; nonpolar covalent 
E)  1.0; polar covalent 
A)  1.0; nonpolar covalent 
B)  6.0; polar covalent 
C)  -1.0; ionic 
D)  6.0; nonpolar covalent 
E)  1.0; polar covalent

Question 8

What is the molecular geometry of each carbon in ethylene (C2H4)?

Accepted Answer

A)  They are both linear. 
B)  They are both trigonal planar. 
C)  They are both bent. 
D)  One is bent, and the other is trigonal planar. 
E)  One is bent, and the other is tetrahedral. 
A)  They are both linear. 
B)  They are both trigonal planar. 
C)  They are both bent. 
D)  One is bent, and the other is trigonal planar. 
E)  One is bent, and the other is tetrahedral.

Question 9

How is estradiol recognized by the estrogen receptor?

Accepted Answer

A)  The molecular weight is recognized. 
B)  The atom types in the ligands are recognized by the receptors. 
C)  Single bonds, double bonds, and triple bonds are recognized by receptors. 
D)  Receptors recognize ligands by shape only. 
E)  Ligands are recognized by shape and intermolecular forces of attraction. 
A)  The molecular weight is recognized. 
B)  The atom types in the ligands are recognized by the receptors. 
C)  Single bonds, double bonds, and triple bonds are recognized by receptors. 
D)  Receptors recognize ligands by shape only. 
E)  Ligands are recognized by shape and intermolecular forces of attraction.

Question 10

Which elements have the highest electronegativity and why?

Accepted Answer

A)  Nonmetals.They accept electrons in order to attain an octet. 
B)  Metals.They accept electrons in order to attain an octet. 
C)  Nonmetals.They donate electrons in order to attain an octet. 
D)  Metals.They donate electrons in order to attain an octet. 
E)  Transition metals.They can have different charges. 
A)  Nonmetals.They accept electrons in order to attain an octet. 
B)  Metals.They accept electrons in order to attain an octet. 
C)  Nonmetals.They donate electrons in order to attain an octet. 
D)  Metals.They donate electrons in order to attain an octet. 
E)  Transition metals.They can have different charges.

Question 11

What is the molecular geometry of carbon in chloroform (CHCl3)?

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

The structure below is a Lewis structure of methane.This Lewis structure tells us many things about methane that are useful.However, it also suggests one characteristic of methane that is, in fact, false.What is this one characteristic?

Accepted Answer

A)  The Lewis structure suggests that carbon has a full valence shell, but it really doesn't. 
B)  The Lewis structure suggests that carbon has four bonds, but it really doesn't. 
C)  The Lewis structure suggests that carbon is bonded to four hydrogens, but it really isn't. 
D)  The Lewis structure suggests that methane is flat, but it really isn't. 
E)  The Lewis structure suggests that methane is stable, but it really isn't. 
A)  The Lewis structure suggests that carbon has a full valence shell, but it really doesn't. 
B)  The Lewis structure suggests that carbon has four bonds, but it really doesn't. 
C)  The Lewis structure suggests that carbon is bonded to four hydrogens, but it really isn't. 
D)  The Lewis structure suggests that methane is flat, but it really isn't. 
E)  The Lewis structure suggests that methane is stable, but it really isn't.

Question 13

Which molecules exhibit the strongest intermolecular forces of attraction?

Accepted Answer

A)  structure a 
B)  structure b 
C)  structure c 
D)  structure d 
E)  They all have the same strength of intermolecular force because they are all nonpolar molecules 
A)  structure a 
B)  structure b 
C)  structure c 
D)  structure d 
E)  They all have the same strength of intermolecular force because they are all nonpolar molecules

Question 14

Tamoxifen has some key similarities to estradiol.Which of the following statements describes one of the similarities?

Accepted Answer

A)  Tamoxifen has the same structure as estradiol. 
B)  Tamoxifen has the same number of atoms as estradiol. 
C)  Tamoxifen performs the same function in the cell as estradiol. 
D)  Tamoxifen binds to the same receptor as estradiol. 
E)  Tamoxifen deforms the shape of the estrogen receptor in the same way as estradiol. 
A)  Tamoxifen has the same structure as estradiol. 
B)  Tamoxifen has the same number of atoms as estradiol. 
C)  Tamoxifen performs the same function in the cell as estradiol. 
D)  Tamoxifen binds to the same receptor as estradiol. 
E)  Tamoxifen deforms the shape of the estrogen receptor in the same way as estradiol.

Question 15

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)  -0.4; nonpolar covalent 
E)  4.6; polar covalent 
A)  0.4; nonpolar covalent 
B)  0.4; polar covalent 
C)  4.6; ionic 
D)  -0.4; nonpolar covalent 
E)  4.6; polar covalent

Question 16

The only interactions between two or more molecules of a nonpolar material such as methane (CH4)are _______ because these molecules do not have permanent dipoles.

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

Chloroform (CHCl3)is an anesthetic and is also used in the synthesis of ozone-damaging refrigerants called CFCs.What is the correct Lewis dot structure for chloroform?

Accepted Answer

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

Question 18

A polar molecule is one that has

Accepted Answer

A)  one large atom and one small atom. 
B)  an even distribution of charge. 
C)  a positive or negative charge. 
D)  a more positive side and a more negative side. 
E)  only polar atoms. 
A)  one large atom and one small atom. 
B)  an even distribution of charge. 
C)  a positive or negative charge. 
D)  a more positive side and a more negative side. 
E)  only polar atoms.

Question 19

What is the electron geometry of the groups around the nitrogen atom 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 20

Does chloroform (CHCl3)contain polar bonds?

Accepted Answer

A)  Yes.All of the bonds in chloroform are polar. 
B)  Yes.The C-Cl bond in chloroform is polar. 
C)  Yes.The C-H bond in chloroform is polar. 
D)  Yes.All atoms in chloroform are highly electronegative. 
E)  No.All bonds in chloroform are nonpolar. 
A)  Yes.All of the bonds in chloroform are polar. 
B)  Yes.The C-Cl bond in chloroform is polar. 
C)  Yes.The C-H bond in chloroform is polar. 
D)  Yes.All atoms in chloroform are highly electronegative. 
E)  No.All bonds in chloroform are nonpolar.

In addition to single bonds, which of the following electron groups do the carbon atoms in ethylene (C₂H₄)have?

Which of the bonds in the following molecule are polar covalent?

What is the electron geometry of each carbon in ethylene (C₂H₄)?

Ethanol is an alcohol found in wine and beer, and it is also used as a fuel.It has the structure shown below.What is the strongest type of intermolecular interaction attracting molecules of ethanol together?

What is meant by the following symbols?

What is the electron geometry of the nitrogen atom in nitrogen trichloride (NCl₃)?

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

What is the molecular geometry of each carbon in ethylene (C₂H₄)?

How is estradiol recognized by the estrogen receptor?

Which elements have the highest electronegativity and why?

What is the molecular geometry of carbon in chloroform (CHCl₃)?

The structure below is a Lewis structure of methane.This Lewis structure tells us many things about methane that are useful.However, it also suggests one characteristic of methane that is, in fact, false.What is this one characteristic?

Which molecules exhibit the strongest intermolecular forces of attraction?

Tamoxifen has some key similarities to estradiol.Which of the following statements describes one of the similarities?

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

The only interactions between two or more molecules of a nonpolar material such as methane (CH₄)are _______ because these molecules do not have permanent dipoles.

Chloroform (CHCl₃)is an anesthetic and is also used in the synthesis of ozone-damaging refrigerants called CFCs.What is the correct Lewis dot structure for chloroform?

A polar molecule is one that has

What is the electron geometry of the groups around the nitrogen atom indicated with arrow II?

Does chloroform (CHCl₃)contain polar bonds?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

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Exam 4: Molecular Geometry, Polarity, and Intermolecular

In addition to single bonds, which of the following electron groups do the carbon atoms in ethylene (C2H4)have?

Which of the bonds in the following molecule are polar covalent?

What is the electron geometry of each carbon in ethylene (C2H4)?

Ethanol is an alcohol found in wine and beer, and it is also used as a fuel.It has the structure shown below.What is the strongest type of intermolecular interaction attracting molecules of ethanol together?

What is meant by the following symbols?

What is the electron geometry of the nitrogen atom in nitrogen trichloride (NCl3)?

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

What is the molecular geometry of each carbon in ethylene (C2H4)?

How is estradiol recognized by the estrogen receptor?

Which elements have the highest electronegativity and why?

What is the molecular geometry of carbon in chloroform (CHCl3)?

The structure below is a Lewis structure of methane.This Lewis structure tells us many things about methane that are useful.However, it also suggests one characteristic of methane that is, in fact, false.What is this one characteristic?

Which molecules exhibit the strongest intermolecular forces of attraction?

Tamoxifen has some key similarities to estradiol.Which of the following statements describes one of the similarities?

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

The only interactions between two or more molecules of a nonpolar material such as methane (CH4)are _______ because these molecules do not have permanent dipoles.

Chloroform (CHCl3)is an anesthetic and is also used in the synthesis of ozone-damaging refrigerants called CFCs.What is the correct Lewis dot structure for chloroform?

A polar molecule is one that has

What is the electron geometry of the groups around the nitrogen atom indicated with arrow II?

Does chloroform (CHCl3)contain polar bonds?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

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In addition to single bonds, which of the following electron groups do the carbon atoms in ethylene (C₂H₄)have?

What is the electron geometry of each carbon in ethylene (C₂H₄)?

What is the electron geometry of the nitrogen atom in nitrogen trichloride (NCl₃)?

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

What is the molecular geometry of each carbon in ethylene (C₂H₄)?

What is the molecular geometry of carbon in chloroform (CHCl₃)?

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

The only interactions between two or more molecules of a nonpolar material such as methane (CH₄)are _______ because these molecules do not have permanent dipoles.

Chloroform (CHCl₃)is an anesthetic and is also used in the synthesis of ozone-damaging refrigerants called CFCs.What is the correct Lewis dot structure for chloroform?

Does chloroform (CHCl₃)contain polar bonds?