Package Title: Brown/Poon Test Bank
Course Title: Brown/Poon 6e
Chapter Number: 1

Question type: Multiple Choice

Section 1.1
Difficulty Level: Easy
1.  Which is the electronic configuration that describes Mg2+? 

a) 1s2, 2s2
b) 1s2, 2s2, 2p6
c) 1s2, 2s2, 2p6, 3s2
d) 1s2, 2s2, 2p6, 3s2, 3p6

Answer: b

Section 1.1
Difficulty Level: Easy
2.  Which is the electronic configuration that describes a neutral carbon atom?

a) 1s2, 2s2, 2p5
b) 1s2, 2s2, 2p6, 3s2
c) 1s2, 2s2, 2p2
d) 1s2, 2s2, 2p6

Answer: c

Section 1.1
Difficulty Level: Easy
3.  Which atom is described by the electronic configuration 1s22s22p63s23p3?

a) Mg
b) Al
c) Si
d) P

Answer: d

Section 1.1
Difficulty Level: Easy
4.  Which atom is described by the electron configuration 1s22s22p63s23p5?  

a) S
b) Se
c) Cl
d) Br

Answer: c

Section 1.1
Difficulty Level: Easy
5.  A neutral carbon has how many valence electrons?

a) 2
b) 4
c) 6
d) 8

Answer: b

Section 1.1
Difficulty Level: Easy
6.  A neutral oxygen has how many valence electrons?  

a) 4
b) 5
c) 6
d) 7

Answer: c

Section 1.1
Difficulty Level: Easy
7.  A neutral nitrogen has how many valence electrons?  

a) 4
b) 5
c) 6
d) 7

Answer: b

Section 1.1
Difficulty Level: Medium
8.  Which statement about orbitals is false?  

a) Orbitals are regions of space where electrons are found.
b) Orbitals may contain up to two electrons each.   
c) Orbitals are filled in order of decreasing energy.
d) Orbitals of equivalent energy are half filled before adding two electrons to any one of them.

Answer: c

Section 1.2
Difficulty Level: Easy
9.  Which atom is described by the Lewis structure ?  

a) C
b) P
c) Se
d) I

Answer: c

Section 1.2
Difficulty Level: Easy
10.  Which atom is described by the Lewis structure ?  

a) C
b) P
c) Se
d) I

Answer: a

Section 1.2
Difficulty Level: Medium
11. Which Lewis structures are correct?  
HINT: Perform a total valence count and check formal charges.  

a) I
b) II
c) III
d) IV

Answer: a

Sections 1.2, 1.7
Difficulty Level: Medium
12. Which Lewis structures are correct?  
HINT: Perform a total valence count and check formal charges.  

a)  I, II
b)  II, IV
c)  III, IV
d)  I, III

Answer: c

Section 1.2
Difficulty Level: Medium
13.  Which functional groups have correct Lewis structures?  

a) I, II
b) II, III
c) I, II, III
d) I, III

Answer: d

Section 1.2
Difficulty Level: Hard
14.  Which is the correct Lewis structure for acetic acid (CH3CO2H)?  

a) I
b) II
c) III
d) IV

Answer: d

Section 1.3
Difficulty Level: Medium
15.  Using the VSEPR model, predict which atoms have bond angles of about 120°. 

a) II, IV
b) I, IV
c) II, III
d) I, III

Answer: d

Section 1.3
Difficulty Level: Medium
16.  Using the VSEPR model, predict which species have bond angles of about 109°.  
HINT: Assume that the charges are correct. Add the missing lone pairs before applying the VSEPR theory!

a) I, III, IV
b) II, III, V
c) I, IV
d) III, IV, V

Answer: a

Section 1.3
Difficulty Level: Medium
17: Which of the atoms that are marked with an arrow have tetrahedral geometry? 

a)	I, II
b)	II, IV
c)	I, IV, V
d)	II, II, V

Answer: b

Sections 1.3, 1.5
Difficulty Level: Medium
18: Which of the atoms that are marked with an arrow are sp2-hybridized? 

a) I, II, III
b) I, II, IV
c) I, III, V
d) III, IV

Answer: c

Section 1.3
Difficulty Level: Hard
19.  According to VSEPR model, what is your prediction for the arrangement of electron pairs for CH3-?  
a) linear
b) tetrahedral
c) bent
d) trigonal

Answer: b

Section 1.4
Difficulty Level: Easy
20.  Arrange the bonds in increasing order of ionic character (least first).  

C-C		Na-O		C-N		O-H		C-O
  I                            II                         III                         IV                         V

a) III, I, IV, II, V
b) V, III, I, II, IV
c) I, V, III, IV, II
d) I, III, V, IV, II

Answer: d

Section 1.4
Difficulty Level: Easy
21.  Nitrogen has a negative formal charge in which of the following compounds?  

a) NaNH2
b) N2
c) NH4Cl
d) HCN

Answer: a

Section 1.4
Difficulty Level: Easy
22.  What is the formal charge of oxygen in H3O+?  

a) –1
b) 0
c) +1
d) +2

Answer: c

Section 1.4
Difficulty Level: Medium
23.  Which compounds contain both covalent and ionic bonds?  

CH3OH		Na2CO3		NH4Cl		NaCl
     I                            II                         III                       IV

a) I, II
b) II, IV
c) I, II, IV
d) II, III

Answer: d

Section 1.4
Difficulty Level: Medium
24.  Which of these molecules are polar?  
HINT: look for the presence of at least one polar covalent bond in these molecules!

a)  I,IV
b)  I, III, III
c)  II, III, IV
d)  III, IV, V

Answer: b

Section 1.4
Difficulty Level: Medium
25.  Which of these molecules are polar? 
HINT: look for the presence of at least one polar covalent bond in these molecules!

a) III, IV, V
b) I, IV
c) II, III, V
d) I, III

Answer: c

Section 1.4
Difficulty Level: Medium
26.  What is the formal charge of indicated carbon in the following molecule? 

a) –2
b) –1
c) 0
d) +1

Answer: b

Section 1.4
Difficulty Level: Hard
27.  Using the VSEPR model, predict which molecules have bond angles of about 109°.  

a) II, IV
b) I, II, III
c) III, IV, V
d) II, III, IV

Answer: c

Section 1.4
Difficulty Level: Hard
28.   Using the VSEPR model, predict which molecules have bond angles of about 120°. 

a) I, II, IV
b) I, II, III
c) III, IV, V
d) II, III, IV

Answer: b

Section 1.5
Difficulty Level: Medium
29.  Which statement about contributing structures is false?  

a) All contributing structures must have the same number of valence electrons.
b) All contributing structures must obey the rules of covalent bonding.
c) The position of nuclei may change.
d) Third period atoms may have up to 18 electrons around them.

Answer: c

Section 1.5
Difficulty Level: Hard

30.  Which of the following are pairs of contributing structures?  

a) II, IV
b) I, II, III
c) III, IV
d) II, III, ,IV

Answer: c

Section 1.6
Difficulty Level: Medium
31.  The carbon has the correct orbital hybridization in which structures?  

a) II, IV, V  
b) II, III, IV
c) I, II, III
d) I, IV, V

Answer: a

Section 1.6
Difficulty Level: Medium
32.  What are the correct orbital hybridizations for carbon in the following species?  
HINT: Add a lone pair if the charge of the molecule suggests it!

a) CH3+ is sp-hybridized
b) CH3- is sp2-hybridized
c) CH4  is sp2-hybridized
d) CH3- is sp3-hybridized

Answer: d  

Section 1.7
Difficulty Level: Easy
33.  Which of the following compounds is a tertiary (3°) alcohol?  

          I                                      II                                        III                                               IV

	a) I
	b) II
	c) III
	d) IV

Answer: b

Section 1.7
Difficulty Level: Medium
34. Which compounds are classified correctly?  
HINT: Assume that the charges are correct. Add the missing lone pairs!

a) III, IV, V 
b) II, III, IV
c) I, III, V
d) I, III, IV

Answer: a

Section 1.7
Difficulty Level: Medium
35.  Which of the three molecules (testosterone, methadone and hydrocodone) contains a ketone? 

a) I,II
b) III
c) II,III
d) I, II, III

Answer: d

Section 1.7
Difficulty Level: Medium
36.   Which of the three molecules testosterone, methadone and hydrocodone contains an amine?

a) I,II
b) III
c) II,III
d) I, II, III

Answer: c

Section 1.7
Difficulty Level: Medium
37.  Which of the three molecules testosterone, methadone and hydrocodone contains a hydroxyl group.

a) I
b) I, III
c) II,III
d) I, II, III

Answer: a

Section 1.7
Difficulty Level: Medium
38.  Which of the three molecules aspirin, paracetamol and ibuprofen contains a carboxyl group?

a) I
b) I, III
c) II,III
d) I, II, III

Answer: b

Section 1.7
Difficulty Level: Hard
39.  What is the correct structure for the aldehyde, which has the formula C4H8O?  

a) I
b) II
c) III
d) IV

Answer: c

Question type: Fill-in-the-Blank

Section 1.1
Difficulty Level: Easy
40.  The spins of two electrons in the same orbital must be _______ .

Answer: paired

Section 1.1
Difficulty Level: Easy
41.  Outer shell electrons are called _________ electrons.  

Answer: valence

Section 1.1
Difficulty Level: Easy
42.  ______ is the number of valence electrons for a neutral sulfur atom.  

Answer: 6

Section 1.1
Difficulty Level: Easy
43.  ______ is the number of valence electrons for a neutral bromine atom. 

Answer: 7

Section 1.1
Difficulty Level: Easy
44.  The tendency of an element to react such that it achieves a noble gas configuration is called 
      the ______ ______.  (Sec. 1.1, EASY)

Answer: octet rule

Section 1.4
Difficulty Level: Medium
45.  The most polar bond in the following molecule is __________.  

Answer: C-F

Section 1.4
Difficulty Level: Medium
46.  A __________ bond is characterized by the unequal sharing of electrons.  

Answer: polar covalent

Section 1.7
Difficulty Level: Medium
47.  The following molecule contains the _________ and __________ functional groups.  

Answer: hydroxyl and carbonyl 

Section 1.7
Difficulty Level: Medium
48. The following molecule contains the _________ and __________ functional groups.  

Answer: primary amino and carboxyl

Section 1.7
Difficulty Level: Medium
49.  Functional groups undergo the same type of __________ in whatever compound they are found.  

Answer: reactions

Section 1.7
Difficulty Level: Medium
50.  ______________ are the basis for compound nomenclature. 

Answer: Functional groups

Question type: True/False

Section 1.1
Difficulty Level: Easy
51.  Each shell can hold two electrons.  

Answer: False

Section 1.1
Difficulty Level: Medium
52.  Orbitals make up the majority of the mass of an atom. 

Answer: False

Section 1.2
Difficulty Level: Easy
53.  An neutral atom that has gained electrons is called an anion.  

Answer: True

Section 1.2
Difficulty Level: Easy
54.  Ionic bonds are characterized by the unequal sharing of electrons.  

Answer: False

Section 1.2
Difficulty Level: Medium
55.  Atoms of the group 7A elements react by losing an electron to achieve a noble gas configuration. 

Answer: False

Section 1.2
Difficulty Level: Medium
56.  Atoms of the group 2A elements react by losing two electrons to achieve a noble gas configuration. 

Answer: True

Section 1.2
Difficulty Level: Medium
57.  Carbon atoms usually react by gaining 4 electrons to achieve a noble gas configuration.  

Answer: False

Section 1.4
Difficulty Level: Medium

58.   is a polar molecule.  

Answer: True

Section 1.4
Difficulty Level: Medium

59.   contains only polar covalent bonds.  

Answer: False

Section 1.7
Difficulty Level: Medium
60.  The following molecule is an example of a secondary amine.  

Answer: False