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CHEM 110 - EXAM #3: Bonds and Intermolecular Forces

Total questions: 87

Worksheet time: 2hrs 56mins

Name
Class
Date
1.

How many single bonds will carbon look to make when it bonds covalently?

a)

2

b)

3

c)

4

d)

5

2.

How many bond(s) and lone pair(s) can C make?

(a)  

3.

How many bond(s) and lone pair(s) can F make?

(a)  

4.

How many bond(s) and lone pair(s) can O make?

(a)  

5.

How many bond(s) and lone pair(s) can N make?

(a)  

6.

  1. 1. Exists in all covalent molecules

  2. 2. Only force present for nonpolar molecules

    3. Created by a temporary dipole

  3. What intermolecular force is this?



(a)  

7.

  1. 1. Exists between two+ polar molecules

  2. 2. Stronger force than LDF

  3. 3. Has a permanent dipole

  4. What intermolecular force is this?



(a)  

8.

  1. 1. Ionic compound with

  2. a polar molecule

  3. 2. Permanent dipole

  4. What intermolecular force is this?



(a)  

9.

  1. 1. NOT a chemical bond

  2. 2. Strongest IMF

  3. 3. Must have H covalently

  4. bonded to (F, O, or N)

  5. What intermolecular force is this?



(a)  

10.

How does fluorine (F) obey the octet rule when reacting to form compounds?

a)

It doesn’t change its number of electrons

b)

Fluorine does not obey the octet rule.

c)

It gains electrons.

d)

It gives up electrons.

11.

Which of the following pairs of elements is most likely to form an ionic compound?

a)

magnesium and fluorine

b)

manganese and iron

c)

oxygen and chlorine

d)

sodium and aluminum

12.

How many valence electrons are transferred from the sodium atom to fluoride in the formation of the compound sodium fluoride?

a)

0

b)

1

c)

2

d)

3

13.

Select the correct formula for boron trichloride.

a)

B2Cl

b)

B3Cl

c)

BCl3

d)

BCl2

14.

What is the balanced chemical formula of iron (II) oxide?

a)

FeO

b)

FeO2

c)

Fe2O2

d)

Fe2O

15.

Which of the following is true about a balanced chemical equation?

a)

Starting substances are called reactants, and ending substances are called products.

b)

The reactants and products are separated by an arrow.

c)

The equation must obey the Law of Conservation of Matter.

d)

All of these are true.

16.

AlCl3 + Na(OH) → Al(OH)3 + NaCl


In the chemical equation above, NaCl is a ______.

a)

Catalyst

b)

Solvent

c)

Product

d)

Reactant

17.

MgCl2 + Na ---> NaCl + Mg


What type of reaction is shown by the equation?

a)

Combination/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

18.

___Fe + ___O2 ---> ___Fe2O3


Which set of coefficients will correctly balance the equation?

a)

Already Balanced (no coefficients needed)

b)

2, 3, 4

c)

4, 3, 2

d)

3, 2, 2

19.

How many chlorine (Cl) atoms are in 3MgCl2?

a)

2

b)

3

c)

5

d)

6

20.

What type of reaction is electrolysis if its formula is:


2H2O → 2H2 + O2

a)

Synthesis (Combination)

b)

Decomposition

c)

Single Replacement

d)

Combustion

21.
What elements generally make an ionic bond?
a)
metal and nonmetal
b)
2 nonmetals
c)
metal
d)
none of the above
22.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 nonmetals
c)
metal
d)
none of the above
23.
In chemical compounds, covalent bonds form when
a)
the electronegativity difference between two atoms is very large.
b)
electrons are completely transferred between two metals.
c)
pairs of electrons are shared between two nonmetal atoms.
d)
two nonmetal atoms are attracted to each other by opposite charges.
24.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
25.
Predict the bond that will form between Se and Cl
a)
Ionic
b)
Covalent
26.
What happens when an atom loses an electron?
a)
It becomes Negatively Charged
b)
It remains neutral because the proton also leaves.
c)
It becomes Positively Charged
d)
It stays the same.
27.
Soluble in Water
a)
Ionic
b)
Covalent
28.

Bonds formed by sharing electrons between atoms are

a)

ionic

b)

metallic

c)

covalent

d)

dipole-dipole

29.

A compound forms between a metal and a nonmetal. It is

a)

ionic

b)

metallic

c)

covalent

30.

A compound is made of two nonmetals. It is

a)

ionic

b)

metallic

c)

covalent

31.
How many electrons are needed to fill the outer orbit of most atoms?
a)
2
b)
4
c)
6
d)
8
32.

Which type of bond involves an unequal sharing of electrons?

a)

ionic

b)

polar covalent

c)

nonpolar covalent

d)

metallic

33.

Which of the following is the correct chemical formula of calcium nitrate?

a)

CaNO3

b)

Ca(NO3)2

c)

CaN

d)

Ca3N2

34.

Which of the following is the correct name for the compound PbO?

a)

lead oxide

b)

lead monoxide

c)

lead (I) oxide

d)

lead (II) oxide

35.

Which of the following forms a nonpolar covalent bond?

a)

Br2

b)

HBr

c)

NaBr

d)

PBr3

36.

Which correctly describes the molecular polarity of water?

a)

nonpolar and symmetrical

b)

nonpolar and asymmetrical

c)

polar and symmetrical

d)

polar and asymmetrical

37.

Which of the following is the most polar?

a)

HF

b)

HCl

c)

HBr

d)

HI

38.

Which of the following is a polar molecule?

a)

O2

b)

CO2

c)

NH3

d)

CH4

39.

What type of chemical bonding interaction is observed in LiF?

a)

Ionic

b)

Covalent

c)

Polar Covalent

d)

Metallic

40.

SHAPE OF BeCl2 MOLECULE IS?

a)

Trigoanl

b)

Linear

c)

Tetrahedral

d)

Octahedral

41.

Shape of SF6 is (a)   .

42.

Shape of ammonia molecule is

a)

Tetrahedral

b)

Trigonal Pyramidal

c)

Square Pyramidal

d)

Trigonal Bi-pyramidal

43.

Shape of H3O+ ion is _________________.

a)

Linear

b)

Trigonal

c)

Bent

d)

Distorted Tetrahedral

44.
Which of the following is the correct Lewis structure for the compound PBr3?
a)
structure A
b)
structure B
c)
structure C
d)
structure D
45.
This is a correct dot diagram for fluorine (F)
a)
true
b)
false
46.

Which is NOT an intramolecular force?

a)

Polar Covalent Bond

b)

Nonpolar Covalent Bond

c)

London Dispersion Force

d)

Ionic Bond

47.

Which occurs between metal and non-metals?

a)

ionic bonding

b)

metallic bonding

c)

covalent bonding

48.

This is an example of a(n) __________.

a)

Hydrogen Bonding

b)

Dipole

c)

Nonpolar Molecule

d)

Intermolecular Force

49.
Does NH3 have hydrogen bonding?
a)
yes
b)
no
50.

Which type of intermolecular force does this molecular drawing best represent?

a)

dipole-dipole

b)

hydrogen bonding

c)

London dispersion forces

51.

What name is given to the shape shown in the picture?

a)

bent

b)

trigonal planar

c)

triangular

d)

trigonal pyramidal

52.

Which of the following shapes is planar?

a)
b)
c)
d)
53.

In which of the following shapes is there atleast a lone pair of electrons around the central atom?

a)
b)
c)
d)
54.

Which of these species has a trigonal planar structure?

a)

PH3

b)

BCl3

c)

H3O+

d)

CH3−

55.

Which one of the following ions has three lone pairs of electrons around the central atom?

a)

BF2-

b)

NH2-

c)

ClF2-

d)

PF6-

56.

Which one of the following molecules or ions is pyramidal in shape?

a)

BF3

b)

CH3+

c)

CH3-

d)

SF3-

57.

What is the name of this shape?

a)

Straight line

b)

Linear

c)

Flat planar

d)

V-Shaped

58.

What is the name of this shape?

a)

Tetrahedral

b)

Triangular Planar

c)

Trigonal pyramid

d)

Trigonal Planar

59.

What is the name of this shape?

a)

Tetrahedral

b)

Pyramidal

c)

Octahedral

d)

Quadrilateral

60.

What is the name of this shape?

a)

Square pyramidal

b)

Triangular pyramidal

c)

Octahedral

d)

Trigonal bipyramidal

61.

What is the name of this shape?

a)

Tetrahedral

b)

Octahedral

c)

Square bipyramidal

d)

Trigonal bipyramidal

62.

What is the name of this shape?

a)

Square pyramidal

b)

Octahedral

c)

Trigonal pyramidal

d)

T-shaped

63.

What is the name of this shape?

a)

Linear

b)

Bent

c)

Pyramidal

d)

Trigonal

64.

What is the name of this shape?

a)

Square pyramidal

b)

Trigonal planar

c)

Tetrahedral

d)

Trigonal pyramidal

65.

How many bonding pairs and lone pairs for a pyramidal molecule?

a)

2 bonding pairs 2 lone pairs

b)

2 bonding pairs 0 lone pairs

c)

3 bonding pairs 1 lone pairs

d)

4 bonding pairs 2 lone pairs

66.

In the following lewis structure, how many bonds are around the central atom?

a)

1 bond

b)

2 bonds

c)

3 bonds

d)

4 bonds

67.

In the following lewis structure, how many lone pairs of electrons are around the central atom?

a)

0 lone pairs of electrons

b)

1 lone pair of electrons

c)

3 lone pairs of electrons

d)

4 lone pairs of electrons

68.

This molecule has 3 bonds and 1 lone pair around the central atom. What shape is it?

a)

bent

b)

trigonal pyramidal

c)

tetrahedral

d)

linear

69.

Which is the 3D picture of this molecule?

a)
b)
c)
d)
70.

This molecule has 2 bonds and 2 lone pairs around the central atom. What shape is it?

a)

bent

b)

trigonal pyramidal

c)

tetrahedral

d)

linear

71.

Which is the 3D picture of this molecule?

a)
b)
c)
d)
72.

This molecule has 4 bonds and 0 lone pairs around the central atom. What shape is it?

a)

bent

b)

trigonal pyramidal

c)

tetrahedral

d)

linear

73.

Which is the 3D picture of this molecule?

a)
b)
c)
d)
74.
a)
A is correct for Oxygen Dichloride 
b)
B is correct for Oxygen Dichloride 
c)
C is correct for Oxygen Dichloride 
d)
D is correct for Oxygen Dichloride 
75.

Use your knowledge and electronegativity sheet to predict what the following compound is classified as.

a)

polar covalent

b)

nonpolar covalent

c)

ionic

d)

metallic

76.

Use your knowledge and electronegativity sheet to predict what the following compound is classified as.

a)

nonpolar covalent

b)

polar covalent

c)

ionic

d)

metallic

77.

Use your knowledge and electronegativity sheet to predict what the following compound is classified as.

a)

non-polar covalent

b)

polar covalent

c)

ionic

d)

metallic

78.
In this Lewis structure, the symbol above F means...
a)
electrons are being transferred to Fluorine
b)
electrons are less attracted to F than H
c)
electrons are more attracted to F than H
d)
Fluorine has formed a cation
79.

What is the shape? Hint: Draw the Lewis dot structure for NH3.

a)

tetrahedral

b)

trigonal pyramidal

c)

trigonal planar

d)

bent

80.
What is the shape of H2O?
a)
linear
b)
tetrahedral
c)
bent
d)
trigonal pyramidal
81.

SiCl4 has what shape?

a)

trigonal planar

b)

pyramidal

c)

tetrahedral

d)

trigonal pyramidal

82.

3 atoms bonded and 0 lone pairs

a)

linear

b)

trigonal planar

c)

bent

d)

tetrahedral

e)

trigonal pyramidal

83.

3 atoms bonded and 1 lone pairs

a)

true linear

b)

trigonal planar

c)

bent

d)

tetrahedral

e)

trigonal pyramidal

84.
Intermolecular force present in HCl?
a)
dipole dipole
b)
dispersion
c)
H-bond
d)
ionic
85.

Intermolecular forces for: CO2

a)

Dispersion Force

b)

Dipole dipole

c)

Hydrogen bonding

86.
What forces will the following molecule have?
a)
dispersion
b)
dipole
c)
hydrogen bonding
87.
How will the following molecule bond with itself?
a)
Dispersion
b)
Dipole
c)
Hydrogen bond

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