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WorksheetsRegents Chemistry Breaking Forming Bonds
Total questions: 25
Worksheet time: 38mins
Name
Class
Date
1.
In covalent bonds, electrons are ___________.
a)
transferred
b)
gained
c)
lost
d)
shared
2.
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
3.
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
4.
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
5.
A diatomic molecule like O2 is always_______ because electrons are shared ________.
a)
nonpolar; equally
b)
polar; equally
c)
nonpolar; unequally
d)
nonpolar; unequally
6.
A bond with a partially negative end and a partially positive end is:
a)
ionic
b)
polar
c)
non-polar
d)
isometric
7.
Which molecule contains bonds with a GREATER polarity?
a)
HCl
b)
CCl4
8.
When you are asked to find bond polarity, compare EN values of each bonding atom to the central atom
a)
true
b)
false
9.
The chemical bond formed when two atoms share electrons is called a(an) IONIC bond.
a)
True
b)
False
10.
How many electrons are shared in a single bond?
a)
2 pairs
b)
4
c)
2
d)
1
11.
In a(an) POLAR bond, one atom pulls on the shared electrons more than the other atom.
a)
True
b)
False
12.
Covalent bonds usually form when a nonmetal combines with another nonmetal.
a)
True
b)
False
13.
Which is the least polar bond?
a)
HCl
b)
HF
c)
OH
d)
H2
14.
In the diagram shown, what is the total number of electrons shared in the bond between the two carbon atoms?
a)
2
b)
3
c)
4
d)
6
15.
This molecule has______bond and is a _________molecule.
a)
non-polar; non-polar
b)
polar, polar
c)
polar,
non-polar
non-polar
d)
non-polar; polar
16.
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
polar, pointing straight down
17.
What kind of bond do you have: Li and Cl
a)
Non-polar covalent
b)
Polar covalent
c)
ionic
d)
James Bond
18.
H = 2.1
O = 3.5
O = 3.5
a)
non-polar
b)
polar
<---
<---
c)
polar
--->
--->
19.
C = 2.5
O = 3.5
O = 3.5
a)
non-polar
b)
polar
<---
<---
c)
polar
--->
--->
20.
C = 2.5
H = 2.1
H = 2.1
a)
non-polar
b)
polar
<---
<---
c)
polar
--->
--->
21.
Cl = 3.0
C = 2.5
C = 2.5
a)
non-polar
b)
polar
<---
<---
c)
polar
--->
--->
22.
O = 3.5
N = 3.0
N = 3.0
a)
non-polar
b)
polar
<---
<---
c)
polar
--->
--->
23.
Br = 2.8
C = 2.5
C = 2.5
a)
non-polar
b)
polar
<---
<---
c)
polar
--->
--->
24.
An ionic bond is the attraction between:
a)
oppositely charged ions
b)
similarly charged ions
c)
neutral ions
d)
neutral atoms
25.
Lewis structures use _ to represent valence electrons.
a)
dots
b)
prefixes
c)
roman numerals
d)
subscripts
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