Question 1

What is the total number of valence electrons in the chloroethylene molecule (C2H3Cl)?

Accepted Answer

A)  6 
B)  18 
C)  21 
D)  32 
E)  62 
A)  6 
B)  18 
C)  21 
D)  32 
E)  62

Question 2

Electrons shared between two atoms is a(n) _______.

Accepted Answer

A)  cation 
B)  anion 
C)  ionic bond 
D)  covalent bond 
E)  salt 
A)  cation 
B)  anion 
C)  ionic bond 
D)  covalent bond 
E)  salt

Question 3

Electronegativity is a measure of an atom's ability to

Accepted Answer

A)  become an anion. 
B)  ionize. 
C)  draw electrons to itself in a covalent bond. 
D)  accept an electron from a metal. 
E)  donate an electron to a nonmetal. 
A)  become an anion. 
B)  ionize. 
C)  draw electrons to itself in a covalent bond. 
D)  accept an electron from a metal. 
E)  donate an electron to a nonmetal.

Question 4

Which of the following is a diatomic molecule?

Accepted Answer

A)  N2 
B)  NaCl 
C)  H2O 
D)  CO 
E)  Li2O 
A)  N2 
B)  NaCl 
C)  H2O 
D)  CO 
E)  Li2O

Question 5

What is the ratio of ions in this lattice of lithium (the larger spheres) and oxygen (the smaller spheres) in Li2O?

Accepted Answer

A)  1 Li:1 O 
B)  2 Li:1 O 
C)  2 O:1 Li 
D)  4 O:5 Li 
E)  4 Li:5 O 
A)  1 Li:1 O 
B)  2 Li:1 O 
C)  2 O:1 Li 
D)  4 O:5 Li 
E)  4 Li:5 O

Question 6

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 7

What is the charge on iron in the ionic compound FeCl3?

Accepted Answer

A)  +3 
B)  +1 
C)  0 
D)  (F1F1F1S1F1F1F101) 
E)  (F1F1F1S1F1F1F103) 
A)  +3 
B)  +1 
C)  0 
D)  (F1F1F1S1F1F1F101) 
E)  (F1F1F1S1F1F1F103)

Question 8

A compound contains magnesium and phosphate. What is the formula unit of this compound?

Accepted Answer

A)  Mg3P2 
B)  MgPO4 
C)  Mg3(PO4)2 
D)  Mg2(PO4)3 
E)  MgHPO4 
A)  Mg3P2 
B)  MgPO4 
C)  Mg3(PO4)2 
D)  Mg2(PO4)3 
E)  MgHPO4

Question 9

Which of the molecules below contain an atom with an expanded octet?

Accepted Answer

A)  I and II 
B)  III only 
C)  IV only 
D)  I, II, and III 
E)  All of these molecules have an expanded octet. 
A)  I and II 
B)  III only 
C)  IV only 
D)  I, II, and III 
E)  All of these molecules have an expanded octet.

Question 10

In addition to single bonds, which of the following electron groups are on the nitrogen of methylamine (CH5N)?

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

Question 11

Is chloroform (CHCl3) a polar molecule?

Accepted Answer

A)  No, all polarities cancel out. 
B)  Yes, all molecules with polar bonds are polar. 
C)  No, the bonds in chloroform are not polar. 
D)  Yes, the polarities do not cancel out. 
E)  No, carbon compounds cannot be polar. 
A)  No, all polarities cancel out. 
B)  Yes, all molecules with polar bonds are polar. 
C)  No, the bonds in chloroform are not polar. 
D)  Yes, the polarities do not cancel out. 
E)  No, carbon compounds cannot be polar.

Question 12

Which of the following elements is the least electronegative?

Accepted Answer

A)  potassium 
B)  hydrogen 
C)  fluorine 
D)  carbon 
E)  oxygen 
A)  potassium 
B)  hydrogen 
C)  fluorine 
D)  carbon 
E)  oxygen

Question 13

Which of the following covalent bonds is polar?

Accepted Answer

A)  C-C 
B)  C-H 
C)  O-Cl 
D)  Cl-Cl 
E)  Mg-Cl 
A)  C-C 
B)  C-H 
C)  O-Cl 
D)  Cl-Cl 
E)  Mg-Cl

Question 14

What is the electron geometry of the carbon and the nitrogen in methylamine (CH5N)?

Accepted Answer

A)  Nitrogen is trigonal planar and carbon is tetrahedral. 
B)  Carbon is tetrahedral and nitrogen is bent. 
C)  Nitrogen is trigonal pyramidal and carbon is tetrahedral. 
D)  Carbon is linear and nitrogen is tetrahedral. 
E)  Both of them are tetrahedral. 
A)  Nitrogen is trigonal planar and carbon is tetrahedral. 
B)  Carbon is tetrahedral and nitrogen is bent. 
C)  Nitrogen is trigonal pyramidal and carbon is tetrahedral. 
D)  Carbon is linear and nitrogen is tetrahedral. 
E)  Both of them are tetrahedral.

Question 15

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

Accepted Answer

A)  C-H and O-H only 
B)  C-O and O-H only 
C)  C-O only 
D)  C-C and C-O 
E)  O-H only 
A)  C-H and O-H only 
B)  C-O and O-H only 
C)  C-O only 
D)  C-C and C-O 
E)  O-H only

Question 16

What does a ball-and-stick model show clearly that a space-filling model does not?

Accepted Answer

A)  relative atom size 
B)  relative bond length 
C)  relative bond strength 
D)  bond angle 
E)  atom identity 
A)  relative atom size 
B)  relative bond length 
C)  relative bond strength 
D)  bond angle 
E)  atom identity

Question 17

How many atoms are bonded to the carbon in dichloromethane (CH2Cl2)?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 18

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 19

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

Accepted Answer

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

Question 20

What is the name of the ionic compound that is composed of calcium and chlorine?

Accepted Answer

A)  calcium dichloride 
B)  dicalcium trichloride 
C)  dicalcium chloride 
D)  calcium chloride 
E)  dicalcium dichloride 
A)  calcium dichloride 
B)  dicalcium trichloride 
C)  dicalcium chloride 
D)  calcium chloride 
E)  dicalcium dichloride

What is the total number of valence electrons in the chloroethylene molecule (C₂H₃Cl)?

Electrons shared between two atoms is a(n) _______.

Electronegativity is a measure of an atom's ability to

Which of the following is a diatomic molecule?

What is the ratio of ions in this lattice of lithium (the larger spheres) and oxygen (the smaller spheres) in Li₂O?

A polar molecule is one that has

What is the charge on iron in the ionic compound FeCl₃?

A compound contains magnesium and phosphate. What is the formula unit of this compound?

Which of the molecules below contain an atom with an expanded octet?

In addition to single bonds, which of the following electron groups are on the nitrogen of methylamine (CH₅N)?

Is chloroform (CHCl₃) a polar molecule?

Which of the following elements is the least electronegative?

Which of the following covalent bonds is polar?

What is the electron geometry of the carbon and the nitrogen in methylamine (CH₅N)?

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

What does a ball-and-stick model show clearly that a space-filling model does not?

How many atoms are bonded to the carbon in dichloromethane (CH₂Cl₂)?

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

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

What is the name of the ionic compound that is composed of calcium and chlorine?

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

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Exam 3: Compounds and Molecules

What is the total number of valence electrons in the chloroethylene molecule (C2H3Cl)?

Electrons shared between two atoms is a(n) _______.

Electronegativity is a measure of an atom's ability to

Which of the following is a diatomic molecule?

What is the ratio of ions in this lattice of lithium (the larger spheres) and oxygen (the smaller spheres) in Li2O?

A polar molecule is one that has

What is the charge on iron in the ionic compound FeCl3?

A compound contains magnesium and phosphate. What is the formula unit of this compound?

Which of the molecules below contain an atom with an expanded octet?

In addition to single bonds, which of the following electron groups are on the nitrogen of methylamine (CH5N)?

Is chloroform (CHCl3) a polar molecule?

Which of the following elements is the least electronegative?

Which of the following covalent bonds is polar?

What is the electron geometry of the carbon and the nitrogen in methylamine (CH5N)?

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

What does a ball-and-stick model show clearly that a space-filling model does not?

How many atoms are bonded to the carbon in dichloromethane (CH2Cl2)?

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

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

What is the name of the ionic compound that is composed of calcium and chlorine?

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

What is the total number of valence electrons in the chloroethylene molecule (C₂H₃Cl)?

What is the ratio of ions in this lattice of lithium (the larger spheres) and oxygen (the smaller spheres) in Li₂O?

What is the charge on iron in the ionic compound FeCl₃?

In addition to single bonds, which of the following electron groups are on the nitrogen of methylamine (CH₅N)?

Is chloroform (CHCl₃) a polar molecule?

What is the electron geometry of the carbon and the nitrogen in methylamine (CH₅N)?

How many atoms are bonded to the carbon in dichloromethane (CH₂Cl₂)?

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