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WorksheetsLewis Structure/Bonding Practice
Total questions: 36
Worksheet time: 57mins
Name
Class
Date
1.
What is the first thing you need to do when drawing Lewis Structures?
a)
Draw your bonds
b)
Count the number of valence electrons
c)
Subtract to make the valence number even
d)
Add to make the valence number even
2.
After drawing in your bonds, what do you do if you don't have enough electrons to get each atom to its octet?
a)
Place dots until everything has eight
b)
Place dots only around the terminal atoms
c)
Add a multiple bond
d)
Have eight only around the central atom
3.
In a Lewis structure, what do you do with the total number of valence if your ion is 2- charged?
a)
Add 2 to the valence number
b)
Subtract 2 from the valence number
c)
Multiply the valence number by 2
d)
Divide the valence number by 2
4.
In a Lewis structure, what do you do with the total number of valence if your ion is + charged?
a)
Divide the valence number by 1
b)
Multiply the valence number by 1
c)
Add 1 to the valence number
d)
Subtract 1 from the valence number
5.
In a Lewis structure, which element belongs in the center?
a)
The more positive one
b)
The neutral one
c)
The more negative one
d)
The largest one
6.
Where can hydrogen be placed in a Lewis Structure?
a)
Only in the center
b)
Only on the left
c)
Only as a terminal atom
d)
Only on the right
7.
How many electrons do atoms need to be stable?
a)
1
b)
2
c)
6
d)
8
8.
How many electrons does each line indicate are shared?
a)
1
b)
2
c)
3
d)
4
9.
Which of the following has a full valence shell?
a)
Oxygen
b)
Neon
c)
Barium
d)
Carbon
10.
Which of the following is a covalent bond?
a)
NaCl
b)
HCl
c)
NH4Cl
d)
ZnCl2
11.
Which of the following is an ionic bond?
a)
H3N
b)
CaCl2
c)
NO2
d)
SCl
12.
Name the compound
a)
3,4 dimethyl octane
b)
3,4 diethyl octane
c)
butyl octane
d)
twelvane
13.
Name the compound
a)
Fifteenane
b)
2 pentyl decane
c)
3,4,5,6 tetramethyl decane
d)
3,4,5,6,7 pentamethyl decane
14.
Name the compound
a)
3,4 dipropyl hexane
b)
3,4-diethyl 3,4-dimethyl hexane
c)
Twelvane
d)
3,3,3,4,4,4 hexamethyl hexane
15.
Name the compound
a)
hexane
b)
2,3-dimethylbutane
c)
ethylbutane
d)
2,2-dimethylbutane
16.
How many carbons are in the longest chain of the following molecule:
a)
11
b)
10
c)
9
d)
8
17.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
18.
Methyl has the molecular formula
a)
CH4
b)
CH3
c)
CH
d)
CH2
19.
Which of the following hydrocarbons has a double bond in its carbon skeleton?
a)
C3H8
b)
C2H6
c)
C2H2
d)
C2H4
20.
Organic compounds are compounds contain ______________.
a)
O
b)
C
c)
N
d)
S
21.
What would an alkane with 2 carbons be called?
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
22.
Which of the following bonds cannot be formed by carbon?
a)
Single
b)
Double
c)
Triple
d)
Quadruple
23.
Which formula represents an isomer of this compound?
a)
1
b)
2
c)
3
d)
4
24.
Which of the following is the correct Lewis formula for molecular oxygen (O2)?
a)
A
b)
B
c)
C
d)
D
25.
Which of the following is the correct Lewis formula for molecular fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
26.
How many electrons are shared in a single bond?
a)
4
b)
2
c)
1
d)
0
27.
How many covalent bonds does carbon need to form in order to have a full octet?
a)
2
b)
3
c)
4
d)
5
28.
Which pair of elements is most likely to form a covalently bonded compound?
a)
Li with Cl
b)
S with O
c)
Ca with S
d)
Na with Br
29.
Which of the following is the correct Lewis structure for the compound phosphorus tribromide?
a)
structure A
b)
structure B
c)
structure C
d)
structure D
30.
Which of the following is the correct Lewis structure for the compound dinitrogen monoxide?
a)
structure A
b)
structure B
c)
structure C
d)
structure D
31.
what type of bond is the strongest
a)
single
b)
Double
c)
coordination
d)
triple
32.
What geometry does this molecule have?
a)
tetrahedral
b)
trigonal pyramid
c)
angular or bent
d)
trigonal plane
33.
What geometry does this molecule have?
a)
linear
b)
trigonal planar
c)
trigonal pyramid
d)
bent of angular
34.
What molecular geometry does ammonia, NH3 have? (hint: draw it out and model with pens)
a)
tetrahedral
b)
trigonal pyramid
c)
trigonal planar
d)
bent or angular
35.
Which of these has a double bond?
a)
Cl2
b)
H2
c)
N2
d)
O2
36.
How many lone pairs does XeCl4 have?
a)
1
b)
2
c)
3
d)
4
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