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WorksheetsFormulas for Binary Compounds
Total questions: 16
Worksheet time: 46mins
Name
Class
Date
1.
A negatively-charged ion.
a)
atom
b)
cation
c)
anion
d)
electron
2.
An atom that has lost or gained electrons; an atom with a charge.
a)
cation
b)
anion
c)
isotope
d)
ion
3.
Cations are
a)
positive
b)
negative
c)
on the right side of the periodic table.
d)
nonmetals
4.
Na + and S -2
a)
Na2S
b)
NaS2
c)
Na2S2
d)
NaS
5.
K + and N-3
a)
KN
b)
KN3
c)
K3N3
d)
K3N
6.
The chemical formula for an ionic compound of potassium and oxygen is
a)
KO.
b)
K2O.
c)
K2O2.
d)
KO2.
7.
How many valence electrons does a bromine atom have?
a)
1
b)
2
c)
6
d)
7
8.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
9.
When naming ionic compounds, the cation is always named first and the anion is always named second.
a)
False
b)
True
10.
Which of the following will form an ion with a 2- charge?
a)
Ca
b)
Se
c)
Ge
d)
N
11.
How do the following two elements bond together?
Al3+ O2-
Al3+ O2-
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
12.
What charge does a calcium (Ca) ion have?
a)
+1
b)
+2
c)
+3
d)
+4
13.
A phosphorus atom needs to gain ___ electrons to achieve a full octet.
a)
3
b)
4
c)
6
d)
5
14.
What would be the proper chemical formula for combining Al3+ and l- :
a)
Al l3
b)
Al3l
c)
Al l
d)
Al3 l3
15.
What formula results when Ca+2 and Br- ions bond?
a)
Ca2Br2
b)
CaBr
c)
Ca(br)2
d)
CaBr2
16.
The chemical formula for an ionic compound of potassium and oxygen is
a)
KO.
b)
K2O.
c)
K2O2.
d)
KO2.
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