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Chemistry Unit 4 Review

Total questions: 45

Worksheet time: 1hrs 18mins

Name
Class
Date
1.
What is the molecular geometry of CS2?
a)
linear
b)
bent
c)
trigonal planar
d)
trigonal pyramidal
2.

The molecular geometry of CH2O is...

a)

tetrahedral

b)

trigonal planar

c)

bent

d)

trigonal pyramidal

3.

A molecule consists of four single bonds and no lone pairs. What is its structure? 

a)
square planar
b)
tetrahedral
c)
linear
d)
square pyramidal 
4.

*no lone pairs

a)

linear

b)

trigonal planar

c)

trigonal pyramid

d)

bent of angular

5.
*
a)
trigonal pyramid
b)
linear
c)
bent
d)
angular
6.
*
a)
tetrahedral
b)
trigonal pyramid
c)
angular or bent
d)
trigonal plane
7.

ELECTRON geometry (Honors)

a)

Bent

b)

Trigonal Planar

c)

Trigonal Pyramidal

d)

Tetrahedral

8.
Hint: Draw the Lewis dot structure for NH3.
a)
tetrahedral
b)

trigonal pyramidal

c)
trigonal planar
d)
bent or angular
9.

Type of bond with the greatest difference in electronegativity

a)

Non-polar covalent

b)

Polar Covalent

c)

Ionic

10.
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
11.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
12.
SiCl4 has what shape?
a)
square planar
b)
square pyramidal
c)
tetrahedral
d)
octahedral
13.

H2O has _____bonding domains and ____non-bonding domains

a)

4,0

b)

3,1

c)

2,2

d)

3,0

14.

Which of the following is octahedral? (honors)

a)

SCl6

b)

XeI4

c)

NBr5

d)

CH4

15.
Which of the following most likely represents the molecular geometry of water?
a)
A
b)
B
c)
C
d)
D
16.
Which molecule contains one unshared pair of valence electrons (lone pair)? 
a)
H2O
b)
NH3
c)
CH4
d)
CO2
17.

Symmetric, dissolves in oil, spreads on wax, not attracted to a charged surface

a)
Polar 
b)
Nonpolar 
18.
H2O
a)
Polar 
b)
Nonpolar 
19.

Asymmetric, dissolves in water, beads up on wax, attracted to a charged surface

a)
Polar 
b)
Nonpolar 
20.
The molecule shown in the diagram can best be classified as a
a)
polar covalent molecule
b)
nonpolar covalent molecule
c)
ionic compound
d)
nonpolar ionic compound
21.
The polarity of a bond between two elements can be best determined by
a)
The difference in electronegativity between the elements
b)
The difference in first ionization energy between the elements
c)
The number of electrons shared in the bond
d)
The difference in atomic radius between the elements
22.

In the diagram shown, what is the total number of valence electrons around each carbon atom?

a)

4

b)

6

c)

8

d)

10

23.
Which bond is most polar?
a)
H-F
b)
H-Cl
c)
H-Br
d)
H-I
24.
Put these in increasing electronegativity order:
C, H, and O
a)
H < C < O
b)
H < O < C
c)
O < C < H
d)
C < H < O
25.
This molecule has______bond and is a _________molecule.
a)
non-polar; non-polar
b)
polar, polar
c)
polar,
non-polar
d)
non-polar; polar
26.
This molecule has______bonds and is a _________molecule.
a)
non-polar; non-polar
b)
polar; non-polar
c)
polar; polar
d)
non-polar; polar
polar, pointing straight down
27.
This is the correct dot diagram for nitrogen (N)
a)
true
b)
false
28.

How many bonds does this atom make?

a)

1

b)

2

c)

3

d)

4

29.

Which structural formula with lone pairs is correct for chloromethane (CH3Cl)

a)

A

b)

B

c)

C

d)

D

30.
In this molecule, each NITROGEN makes how many bonds?
a)
1
b)
2
c)
3
d)
4
31.

Shape at position 1

a)

Tetrahedral

b)

Bent

c)

Trigonal Planar

d)

Trigonal Pyramidal

32.

Shape at position 2

a)

Tetrahedral

b)

Bent

c)

Trigonal Planar

d)

Trigonal Pyramidal

33.

Shape at position 3

a)

Tetrahedral

b)

Bent

c)

Trigonal Planar

d)

Trigonal Pyramidal

34.

Around the central atom there are

a)

2 electron domains and both of them are bonds.

b)

4 electron domains, three are bonds and one is a lone pair

c)

3 electron domains and two are bonds and one is a lone pair.

d)

6 electron domains 3 are bonds and 3 and lone pairs

35.

Trigonal Bipyrmaidal geometry has _____ electron domains around a central atom. (honors)

a)

4

b)

6

c)

3

d)

5

36.

These __________, have the same ____________ but different ______________.

a)

Molecules, shape, molecular formulas

b)

Isomers, molecular formulas, structural formulas

c)

Isotopes, boiling points, geometry

d)

Compounds, conductivity, mass

37.

According the HONC rules, oxygen

a)

Bonds once and has three lone pairs

b)

Bonds twice and has three lone pairs

c)

Bonds twice and has two lone pairs

d)

Bonds four times and has no lone pairs

38.

The type of attraction at (A)

a)

Covalent bond

b)

Intermolecular Force

c)

Intramolecular Force

d)

Ionic Bond

39.

Which interaction is INTRAmolecular

a)

A

b)

B

40.

This could be the dot diagram of

a)

N

b)

Cl

c)

C

d)

O

41.

What part of this molecule is partially negative? (δ-)

a)

The top

b)

The left

c)

The bottom

d)

The right

42.

For which of the following is the molecular (overall) dipole correct? Select all that apply.

a)

b)

c)

d)

43.
This could be the dot diagram of 
a)
Ne
b)
Si
c)
Al
d)
Be
44.

What rule is this structure breaking?

a)

Octet

b)

HONC

c)

Octet and HONC

d)

None

45.

Metal + Non-metal =

a)

Non-polar covalent bond

b)

Metallic bond

c)

Polar Covalent Bond

d)

Ionic Bond

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