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Structure and polarity

Total questions: 39

Worksheet time: 39mins

Name
Class
Date
1.

Is this molecule polar or non-polar?

a)

Polar

b)

Non-polar

2.

Is this molecule polar or non-polar?

a)

Polar

b)

Non-polar

3.

Is this molecule polar or non-polar?

a)

Non-polar

b)

Polar

4.

Is this molecule polar or non-polar?

a)

Non-polar

b)

Polar

5.

Is this molecule polar or non-polar?

a)

Polar

b)

Non-polar

6.
In covalent bonds, electrons are ___________.
a)
transferred
b)
gained
c)
lost
d)
shared
7.
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
8.
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
9.
This is an example of a __________ bond.
a)
non-polar covalent
b)
polar covalent
c)
ionic
d)
metallic
10.
Which molecule contains bonds of GREATER polarity?
a)
H2O
b)
OF2
11.
A bond with a partially negative end and a partially positive end is:
a)
ionic
b)
polar
c)
non-polar
d)
isometric
12.
A diatomic molecule like O2 is always_______ because electrons are shared ________.
a)
nonpolar; equally
b)
polar; equally
c)
nonpolar; unequally
d)
nonpolar; unequally
13.
If Boron bonds with Hydrogen, a ____________ bond forms.
a)
polar covalent
b)
nonpolar covalent
c)
metallic
d)
ionic
14.
If Bromine bonds with Hydrogen, a ____________ bond forms.
a)
polar covalent
b)
nonpolar covalent
c)
metallic
d)
ionic
15.
Which formula represents a polar molecule?
a)
H2
b)
H2O
c)
CO2
d)
CCl4
16.
What geometry will this molecular structure have?: PH3
a)
bent
b)
tetrahedral
c)
linear
d)
trigonal pyramidal
17.
What geometry will this molecular structure have?: H2S
a)
bent
b)
tetrahedral
c)
linear
d)
trigonal pyramidal
18.
What geometry will this molecular structure have?: CCl4
a)
bent
b)
tetrahedral
c)
linear
d)
trigonal pyramidal
19.
Will this molecule be polar or nonpolar? CCl4
a)
polar
b)
nonpolar
20.
Will this molecule be polar or nonpolar? H2S
a)
polar
b)
nonpolar
21.
Which of the following is the correct Lewis structure for water?
a)
A
b)
B
c)
C
22.
Electronegativity is a measurement of the ability of a nucleus to...
a)
attract bonding electrons
b)
attract other nuclei
c)
attract elenece in the non-valence energy levels
23.
How many electrons are represented by a single straight line in a Lewis structure?
a)
1
b)
2
c)
4
d)
6
24.
The most electronegative atom in the periodic table is:
a)
Fluorine
b)
Helium
c)
Neon
d)
Francium
25.
Which molecule contains bonds with a GREATER polarity?
a)
HCl
b)
CCl4
26.
The electronegativity difference in the bonds of CH4 (methane) is:
a)
0.4
b)
5.9
c)
-0.4
d)
1.7
27.
The electronegativity difference in the bonds of CCl4 (carbon tetrachloride) is:
a)
0.4
b)
0.5
c)
9.5
d)
5.5
28.

What is the molecular geometry for this molecule?

a)

Bent

b)

Trigonal pyramidal

c)

Trigonal planar

d)

Linear

29.
Choose the correct shape for this molecule:
a)
Bent
b)
Linear
c)
Tetrahedral
d)
Trigonal pyramidal
30.

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

31.

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

32.

Use your knowledge and electronegativity sheet to predict what type of bond would form between calcium and bromine.

a)

non-polar covalent

b)

polar covalent

c)

ionic

d)

metallic

33.

Water which is polar likes to dissolve:

a)

ionic compounds

b)

polar molecules

c)

nonpolar molecules

d)

metallic compounds

34.

CO2 has polar bonds but is a NON POLAR molecule. Why?

a)

it has an asymmetrical shape

b)

bond polarity or dipole moment between C and O atoms cancel

c)

there is net dipole moment between C and O atoms in molecule

d)

bond polarity does not exist between C+ and O- atoms

35.
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
36.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
37.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
38.

3 atoms bonded and 0 lone pairs

a)

linear

b)

trigonal planar

c)

bent

d)

tetrahedral

e)

trigonal pyramidal

39.

3 atoms bonded and 1 lone pairs

a)

true linear

b)

trigonal planar

c)

bent

d)

tetrahedral

e)

trigonal pyramidal

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