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Review Activity 5 - Covalent Bonding

Total questions: 50

Worksheet time: 38mins

Name
Class
Date
1.
In a polar covalent bond, electrons are shared ___________.
a)
equally
b)
unequally
c)
between non-metals with similar electronegativities
d)
between a metal and a non-metal
2.

How many electrons are represented by a single dash line in a Lewis structure?

a)

1

b)

2

c)

4

d)

6

3.
This is an example of a __________ bond.
a)
non-polar covalent
b)
polar covalent
c)
ionic
d)
metallic
4.

A diatomic molecule like O2 is always_______ because electrons are shared ________.

a)

polar; unequally

b)

polar; equally

c)

nonpolar; equally

d)

nonpolar; unequally

5.

If Boron bonds with Hydrogen, a ____________ bond forms.

a)

polar covalent

b)

diatomic

c)

nonpolar ionic

d)

nonpolar covalent

6.
If Bromine bonds with Hydrogen, a ____________ bond forms.
a)
polar covalent
b)
nonpolar covalent
c)
metallic
d)
ionic
7.

The electronegativity difference in the bonds of CCl4 (carbon tetrachloride) is:

a)

1.0

b)

0.5

c)

9.5

d)

5.5

8.

Electronegativity is a measurement of what?

a)

an atom's attraction for VSEPR

b)

an atom's ability to attract other nuclei

c)

an atom's ability to attract electrons in the non-valence energy levels

d)

an atom's attraction for another atom's electrons

9.

When you have Br-Br, what is the polarity?

a)

Polar

b)

nonpolar

c)

Ionic

d)

opposite

10.

When you have Si-O, what is the polarity?

a)

nonpolar

b)

polar

c)

opposite

d)

ionic

11.
Which has the greater electronegativity: 
H, N, O or F?
a)
H
b)
F
c)
N
d)
O
12.

Which of the following elements has the weakest attraction for electrons in a chemical bond?

a)

S

b)

Cl

c)

O

d)

F

13.

Determine the type of bond in a hydrogen molecule (H2).

a)

Double covalent

b)

Single covalent

c)

polar

d)

Triple covalent

14.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
15.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
16.
Three pairs of electrons are shared in a
a)
Single bond
b)
Double bond
c)
Triple bond
17.

A covalent bond is

a)

a bond that shares electrons with metals

b)

a bond that shares electrons with non metals

c)

a bond that shares ions

d)

metals and nonmetals bonding

18.
When writing Lewis Structures, only __________ electrons are used.
a)
Inner shell
b)
Core 
c)
Valence
d)
Stable
19.

Multiple bonds are possible if _______, ______, and ________ are present in a molecule.

a)

C,H,O

b)

H,O,N

c)

N,O,F

d)

C,N,O

20.
What is the VSEPR theory used to predict?
a)
Bond Strength
b)
Polarity
c)
Molecular Shape
d)
Electronegativity
21.
Which of the following shapes has an unshared pairs of electrons on the central atom? 
a)
Bipyramidal
b)
Bent
c)
Trigonal Planar
d)
Tetrahedral
22.
Which molecule would have this molecular geometry?
a)
BF3
b)
CH4
c)
PCl5
d)
CO2
23.
Who could this molecule be?
a)
CH4
b)
CO2
c)
PCl5
d)
BF3
24.

What molecular geometry would PH3 have?

a)

Trigonal Pyramidal

b)

Trigonal Bipyramidal

c)

Bent

d)

Linear

25.
According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?
a)
Pairs of valence electrons
b)
Inner shell electrons
c)
Mobile Electrons
d)
Electrons closest to the nucleus
26.

Which molecular geometry would CH2I2 have?

a)

bent

b)

trigonal planar

c)

tetrahedral

d)

trigonal pyramidal

27.

Which of the following is a polar molecule?

a)

CH4

b)

I2

c)

H2O

d)

CO2

28.
Which of the following geometries could be nonpolar?
a)
bent
b)
tetrahedral
c)
trigonal pyrimidal
d)
none of the above
29.
Which formula represents a nonpolar molecule?
a)
HBr
b)
H2S
c)
CBr4
d)
PCl3
30.

What is the molecular geometry and polarity of PCl3?

a)

bent polar

b)

tetrahedral non-polar

c)

tetrahedral polar

d)

trigonal pyramidal polar

31.

What is the molecular geometry and polarity of H2O?

a)

bent polar

b)

tetrahedral non-polar

c)

tetrahedral polar

d)

bent nonpolar

32.

What geometry and polarity will this molecular structure have?: H2S

a)

bent nonpolar

b)

tetrahedral nonpolar

c)

linear polar

d)

bent polar

33.

What geometry and polarity will this molecular structure have?: CCl4

a)

bent polar

b)

tetrahedral nonpolar

c)

linear nonpolar

d)

trigonal pyramidal polar

34.

Choose the correct geometry and polarity for this molecule:

a)

Bent nonpolar

b)

Linear nonpolar

c)

bent polar

d)

linear polar

35.
phosphorus trichloride
a)
KCl3
b)
PCl3
c)
K3Cl
d)
P3Cl
36.
silicon dioxide
a)
SO2
b)
NaO2
c)
SiO2
d)
SiO
37.
SiCl4
a)
silicon tetrachloride
b)
silicon quadchloride
c)
monosilicon tetrachloride
d)
silicon chloride
38.

The chemical formula of sulfur hexabromide is

a)

SBr6

b)

S6Br

c)

S(VI)Br

d)

S6Br6

39.

The chemical formula of dinitrogen textroxide is

a)

Ni2O4

b)

NO4

c)

N2O4

d)

Ni2O2

40.

The name of P4S10 is

a)

phosphorous sulfide

b)

phosphorus sulfide

c)

tetraphosphorus decasulfide

d)

phosphorus (X) sulfide

41.

The chemical formula of tetraphosphorus heptaoxide is

a)

F4O10

b)

P4O7

c)

PO

d)

P10O4

42.

The chemical formula of tetraarsenic decoxide is

a)

As10O4

b)

As4O10

c)

As4O2

d)

AsO10

43.

The name of SO3 compound is

a)

sulfate

b)

sulfur oxide

c)

sulfur trioxide

d)

monosulfur trioxide

44.
What is the formula for Hexaboron Monosilicide
a)
B6Si
b)
BSi
c)
BSi6
d)
B6Si6
45.

What is the name for P3S9?

a)

phosphorous trisulifdenon

b)

diphosphorous ninsulfide

c)

triphosphorous nonasulfide

d)

triphosphide nonasulfur

46.
What is the OFFICIAL name for H2O
a)
Hydrogen Oxide
b)
Oxygen Dinitride
c)
Agua
d)
Dihydrogen Monoxide
47.
BrO3
a)
bromine oxide
b)
monobromine trioxide
c)
bromine trioxide
d)
bromine (III) oxide
48.
What is the correct name for NO?
a)
Mononitrogen Monoxide
b)
Nitrogen Monoxide
c)
Mononitrogen Dioxide
d)
Nitrogen Oxide
49.

Which formula represents a polar molecule?

a)

HBr

b)

H2

c)

CBr4

d)

Cl2

50.

What is the name for N3Cl4?

a)

trinitride dichloride

b)

nitrogen chloride

c)

nitride trichlorinetetra

d)

trinitrogen tetrachloride

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