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WorksheetsWriting Ionic Compounds Chemical Formulas
Total questions: 10
Worksheet time: 30mins
Name
Class
Date
1.
What is the correct formula for the compound, lithium oxide?
a)
LiO
b)
Li2O
c)
LiO2
d)
Li2O2
2.
What is the formula for manganese(III) oxide?
a)
MgO
b)
Mg2O3
c)
MnO
d)
Mn2O3
3.
From the following ionic compounds, choose the name-formula pair that is not correctly matched.
a)
sodium sulfide Na2S
b)
ammonium nitrate NH4NO3
c)
sodium sulfate Na2SO3
d)
calcium oxide CaO
4.
Name the following ionic compound: MgSO4
a)
magnesium sulfoxide
b)
magnesium sulfide
c)
magnesium sulfate
d)
magnesium oxide
5.
Name the following ionic compound: Cr(NO2)3
a)
chromium nitrite
b)
chromium nitride
c)
chromium III nitride
d)
chromium III nitrite
6.
The formula of calcium phosphate is
a)
CaPO4
b)
Ca2(PO4)3
c)
Ca3PO4
d)
Ca3(PO4)2
7.
The chemical compound for sodium phosphate would be:
a)
NaPO4
b)
Na2PO4
c)
Na3PO4
d)
Na(PO4)3
8.
When adding a subscript to a polyatomic ion, you should...
a)
multiply any subscripts on the polyatomic ion by the subscript you are adding
b)
put parentheses around the polyatomic ion before adding a subscript
c)
write the new subscript next to any subscripts on the polyatomic ion
d)
put the polyatomic ion in square brackets before adding the subscript
9.
How do the following two elements bond together?
K1+ S2-
K1+ S2-
a)
KS
b)
K8S
c)
K6S3
d)
K2S
10.
What is the correct formula for aluminum phosphide?
a)
Al₃P₃
b)
AlP
c)
AlPO₄
d)
AlPO₃
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