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Worksheets

Naming/Writing Ionic Compounds/Formulas

Total questions: 40

Worksheet time: 40mins

Name
Class
Date
1.
What is the correct formula for the compound, lithium oxide?
a)
LiO
b)
Li2O
c)
LiO2
d)
Li2O2
2.
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
3.
Cu +2  and  OH -
a)
CuOH2
b)
Cu2OH
c)
Cu(OH)2
d)
correct answer is not given
4.
How do the following two elements bond together?
Al3+  O2-         
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
5.
How do the following two elements bond together?
K1+  S2- 
a)
KS
b)
K8S
c)
K6S3
d)
K2S
6.
How do the following two elements bond together?
Cr3+  O2-         
a)
CrO
b)
Cr3O2
c)
Cr2O3
d)
CrO3
7.
How do the following two elements bond together?
Na1+  F1-         
a)
NaF
b)
NaF3
c)
Na3F
d)
Na1F2
8.
The chemical compound for sodium phosphate would be:
a)
NaPO4
b)
Na2PO4
c)
Na3PO4
d)
Na(PO4)3
9.
The chemical formula of Iron (III)bromide is
a)
FeBr
b)
Fe(III)Br
c)
FeBr₃
d)
Fe₂Br₃
10.
The formula of calcium phosphate is 
a)
CaPO4
b)
Ca2(PO4)3
c)
Ca3PO4
d)
Ca3(PO4)2
11.
Name the following ionic compound: Cr(NO2)3
a)
chromium nitrite
b)
chromium nitride
c)
chromium III nitride
d)
chromium III nitrite
12.

Name the following ionic compound: MgSO4

a)

magnesium sulfoxide

b)

magnesium sulfide

c)

magnesium sulfate

d)

magnesium oxide

13.
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
14.
What is the formula for manganese(III) oxide?
a)
MgO
b)
Mg2O3
c)
MnO
d)
Mn2O3
15.

Potassium and Sulfur create...

a)

KS

b)

KS2

c)

K2S

d)

K2S2

16.

The name of FeCl₂ is

a)

iron chloride

b)

iron (II) chloride

c)

iron (I) chloride

d)

iron dichloride

17.

LiBr is called

a)

lithium bromine

b)

lithium (I) bromine

c)

lithium bromide

d)

lithuim (I) bromide

18.

Which of these combinations is an ionic compound made of?

a)

Metal and Metal

b)

Nonmetal and Nonmetal

c)

Metal and Nonmetal

d)

Cation and Cation

19.

Name the ionic compound SnSe2

a)

Tin diselenide

b)

Tin (IV) Selenide

c)

Tin selenide

d)

Tin (II) triselenide

20.

Name the following ionic compound: Cs2S

a)

cesium sulfide

b)

cesium sulfate

c)

cesium II sulfate

d)

cesium II sulfide

21.

When naming a compound, which of these is written first?

a)

Metal

b)

Nonmetal

c)

Anion

d)

Cation

22.

When naming ionic compounds with transition metals you need to include roman numerals to show the _____ of the metal..

a)

atomic number

b)

mass number

c)

charge

d)

ionization energy

23.

Which of the following combinations would need roman numerals in the name?

a)

potassium + fluorine

b)

beryllium + oxygen

c)

boron + iodine

d)

gold + oxygen

24.

When naming a compound, what must the last part be?

a)

the element with "ide" at the end

b)

the element with the ending "ite"

c)

the name of the element

d)

the element with "ide" at the end, unless its a polyatomic ion

25.

What is the name of the compound Sc(OH)3?

a)

Scandium (III) hydroxide

b)

Scandium (I) hydroxide

c)

Scandium (II) hydroxide

d)

Scandium hydroxide

26.
What is the formula for manganese(III) oxide?
a)
MgO
b)
Mg2O3
c)
MnO
d)
Mn2O3
27.
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
28.

This product contains the compound Na2CO3. The name of this compound is (a)   .

29.

This product contains the compound Sodium hydroxide. What is the chemical formula for this compound?

(a)  

30.

This product contains sodium nitrate. What is the chemical formula of this compound?

(a)  

31.

This product contains Calcium phosphate. What is the chemical formula of this compound?

(a)  

32.

The chemical formula for this substance is (a)   .

33.

This product contains zinc oxide. What is the chemical formula for this compound?

(a)  

34.

These objects contains silver cyanide. What is the chemical formula for this compound?

(a)  

35.

This product contains the compound Potassium chloride. What is the chemical formula for this compound? (a)  

36.

This product contains the compound Na3PO4. The name of this compound is (a)   .

37.

This product contains the compound Magnesium oxide. What is the chemical formula for this compound?

(a)  

38.

What is the proper formula for copper II bromide?

a)

CuBr

b)

CuBr2

c)

Cu2Br

39.

What is the formula for copper (II) sulfide?

a)

CuS

b)

Cu₂S

c)

CuS₂

d)

CuSO₃

40.

This product contains the compound MgCl2. What is the name of this compound?

(a)  

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