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Unit 5-Test Tomorrow;)

Total questions: 40

Worksheet time: 2hrs 0mins

Name
Class
Date
1.

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

a)

Polar

b)

nonpolar

c)

Ionic

2.

When you have H-Cl, what is the polarity?

a)

nonpolar

b)

polar

c)

ionic

3.
 A lone pair is defined as
a)
A pair of bonding electrons
b)
One non-bonding electron
c)
A pair of non-bonding electrons
d)
A pair of electrons on the central atom
4.
What molecular shape is the structure shown here? (H2O)
a)
tetrahedral
b)
trigonal planar
c)
bent
d)
trigonal pyramidal
5.

The electrons in a polar covalent molecule are shared...

a)

Evenly sharing of electrons

b)

Uneven sharing of electrons

c)

Electrons are not shared

d)

None of the Above

6.
How many electrons should Hydrogen have around its Lewis dot model?
a)
1
b)
2
c)
7
d)
8
7.

Antimony tribromide

a)

AnBr3

b)

AtBr3

c)

Sb1Br3

d)

SbBr3

8.

Hexaboron monosilicide

a)

B5S

b)

B6S

c)

B6Si

d)

Br6Si1

e)

Br6Si

9.

P4S5

a)

phosphorus sulfide

b)

quadphosphorus hexasulfide

c)

tetraphosphorus pentasulfur

d)

tetraphosphorus pentasulfide

10.


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

11.
What is the the shape of this molecule according to VSPER theory?
a)
Linear
b)
Tetrahedral
c)
Trigonal Planar
d)
Trigonal pyramidal
12.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Tetrahedral
d)
Linear
13.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
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.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
19.

NH3 has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

20.
Choose the pair of names and formulas that do NOT match.
a)
Cl2O7 : dichlorine heptoxide
b)
NO : nitrogen monoxide
c)
N2O5 : dinitrogen pentoxide
d)
SO3 : monosulfur trioxide
21.
The electronegativity of an atom generally _______ going down columns and _______ going left to right across rows. An element like fluorine would most likely form a(n) _______ bond with an element like oxygen.
a)
decreases;
increases;
ionic
b)
decreases;
increases;
covalent
c)
increases;
decreases;
ionic
d)
increases;
decreases;
covalent
22.
The compound PI3 has what IUPAC name?
a)
potassium iodide
b)
phosphorus iodide
c)
phosphorus triiodide
d)
potassium triiodide
23.

What is the electronegativity of Chlorine gas(Cl2)

a)

0

b)

1

c)

2

24.

Which bond shares electrons evenly?

a)

Nonpolar Covalent

b)

Polar Covalent

c)

Ionic

25.
Which formula represents a nonpolar molecule?
a)
HBr
b)
H2S
c)

O2

d)
PCl3
26.

__________ bonds involve an unequal sharing of electrons, while __________ bonds involve an equal sharing of electrons.

a)

Nonpolar, polar

b)

Polar, metallic

c)

Metallic, nonpolar

d)

Polar, nonpolar

27.

Which picture is the correct Lewis Dot Structure for HCl?

a)
b)
c)
d)
28.

Which is the correct diagram for Carbon Tetraiodide which has one carbon and 4 iodines?

a)
b)
c)
d)
29.

What is the shape of this molecule?

a)

Bent

b)

Linear

c)

Tetrahedral

d)

Pyramidal

e)

Trigonal Planar

30.

WHat is the shape of this molecule?

a)

Bent

b)

Linear

c)

Tetrahedral

d)

Pyramidal

e)

Trigonal Planar

31.

What is the shape of this molecule?

a)

Bent

b)

Linear

c)

Tetrahedral

d)

Pyramidal

e)

Trigonal Planar

32.

What is the shape of this molecule?

a)

Bent

b)

Linear

c)

Tetrahedral

d)

Trigonal Pyramidal

e)

Trigonal Planar

33.

Choose the correct Lewis Dot diagram for CH4?

a)

b)

c)

d)

34.

Which Lewis Dot Model drawing correctly shows an O2 molecule?

a)
b)
c)
d)
35.

Match the following

a)

Covalent Bond

1.

Formed between two nonmetals

b)

Lone Pair

2.

2 electrons not shared by atoms in a covalent compound

c)

Line

3.

How 2 bonding electrons are shown in a dot diagram

d)

Dots

4.

How lone pair electrons are shown in a dot diagram

36.

What is the shape of formaldehyde (CH2O)?

a)

Tetrahedral

b)

Trigonal Planar

c)

Linear

d)

Bent

37.
What is the molecular geometry of OF2?
a)
Linear
b)
Bent
c)
Tetrahedral
d)
Trigonal Planar
38.

How many BONDS are in the diagram for this molecule?

(a)  

39.

According to the VSPER theory, which of the following represents MgCl2 ?

a)

b)

c)

d)

40.

The correct electron dot formula for hydrogen monofluoride?

a)

b)

c)

d)

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