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warm up unit 5 covalent bonding

Total questions: 21

Worksheet time: 1hrs 17mins

Name
Class
Date
1.

Antimony tribromide

a)

AnBr3

b)

AtBr3

c)

Sb1Br3

d)

SbBr3

2.

Hexaboron monosilicide

a)

B5S

b)

B6S

c)

B6Si

d)

Br6Si1

e)

Br6Si

3.

P4S5

a)

phosphorus sulfide

b)

quadphosphorus hexasulfide

c)

tetraphosphorus pentasulfur

d)

tetraphosphorus pentasulfide

4.


The periodic table below shows the Pauling scale of electronegativities for each element. Bonds with a difference in electronegativity of 0.0-0.5 are nonpolar covalent, 0.6-1.7 are polar covalent, and greater than 1.7 are ionic. C4H9OH is the chemical formula for Butanol, Which of these two atom’s bonds in this compound is the least polar?

a)

O-H

b)

C-C

c)

C-H

d)

C-O

5.

Polarity in a molecule arises due to...

a)

areas of higher electron density around an atom

b)

the electrons being transferred

c)

greater difference in electronegativity between bonded atoms

6.
In a covalent bond, one or more electrons are? 
a)
shared 
b)
lost 
c)
gained 
d)
transferred 
7.
VSEPR stands for ________ theory.
a)
Valence Structure of Electron Pyramids and Regression
b)
Varied Structures of Electrons Paired and Replaced
c)
Varied Shell Energy of Protons and Radiation
d)
Valence Shell Electron Pair Repulsion
8.
What is the the shape of this molecule according to VSPER theory?
a)
Linear
b)
Tetrahedral
c)
Trigonal Planar
d)
Trigonal pyramidal
9.
Who could this be? 
a)
CO2
b)
NH3
c)
H2S
d)
CH4
10.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Tetrahedral
d)
Linear
11.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
12.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
13.
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
14.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
15.
SiCl4
a)
silicon tetrachloride
b)
silicon quadchloride
c)
monosilicon tetrachloride
d)
silicon chloride
16.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide
17.
What is the name of Br6F10 ?
a)
Bromium fluoride
b)
Hexabromine fluoride
c)
Bromium decafluoride
d)
none of the above
18.
What is the OFFICIAL name for H2O
a)
Hydrogen Oxide
b)
Oxygen Dinitride
c)
Agua
d)
Dihydrogen Monoxide
19.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
20.

NH3 has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

21.
How many valence electrons does nitrogen have?
a)
3
b)
2
c)
5
d)
1

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