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WorksheetsIonic and Covalent Bonds
Total questions: 16
Worksheet time: 13mins
Name
Class
Date
1.
How many valence electrons does calcium have?
a)
2
b)
4
c)
6
d)
7
2.
How many valence electrons does hydrogen have?
a)
1
b)
2
c)
3
d)
4
3.
When an atom loses an electron, it becomes a:
a)
positive ion
b)
negative ion
c)
neutral ion
d)
neutral atom
4.
Ionic compounds are formed when one or more valence electrons are transferred from _____
a)
a nonmetal atom to a metal atom
b)
a nonmetal atom to a nonmetal atom
c)
a metal atom to a nonmetal atom
d)
a metal atom to a metal atom
5.
This is a correct dot diagram for neon (Ne)
a)
true
b)
false
6.
This could be the dot diagram of
a)
Ne
b)
H
c)
C
d)
F
7.
How are covalent bonds explained?
a)
When one atom takes the other atom's electron
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
8.
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
9.
How many valence electrons do most atoms need to be stable?
a)
1
b)
2
c)
6
d)
8
10.
Where are the nonmetals located on the periodic table?
a)
Blue
b)
Red
c)
Green
11.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
12.
What is oxidation number of H in H2O?
a)
0
b)
-2
c)
-1
d)
+1
13.
What is oxidation number of Fe in FeO ?
a)
+2
b)
-2
c)
0
d)
+1
14.
What is the correct formula for a compound formed from Na + and S -2
a)
Na2S
b)
NaS2
c)
Na2S2
d)
NaS
15.
What is the correct formula for a compound formed from the ions K + and N-3
a)
KN
b)
KN3
c)
K3N3
d)
K3N
16.
What is the oxidation number of magnesium in magnesium chloride (MgCl2)?
a)
+2
b)
-2
c)
12
d)
0
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