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Polyatomic Ions Quiz

Total questions: 19

Worksheet time: 1hrs 24mins

Name
Class
Date
1.

When writing the chemical formula of a compound that contains more than one of a particular polyatomic ion, _____ must be used.

a)

ionic charges

b)

parenthesis

c)

Greek prefixes

d)

lower case letters.

2.

What is the correct name of the compound CaCl2?

a)

Calcium dichloride

b)

Calcium dichlorine

c)

Calcium chlorine

d)

Calcium chloride

3.

What is the correct name for the compound LiF?

a)

Lithium fluoride

b)

Lithium fluorine

c)

monolithium monofluoride

d)

lithium monofluoride

4.

What is the correct formula for Ammonium phosphate?

a)

NH4PO4

b)

NH43PO4

c)

(NH4)3PO4

d)

NH4(PO4)3

5.

How many atoms of oxygen are in a molecule of Ca3(PO4)2

a)

1

b)

2

c)

4

d)

8

6.

_______ is an ion that contains more than one atom.

a)

monatomic ion

b)

complex ion

c)

polyatomic ion

d)

diatomic ion

7.
What is the name of K3PO4?
a)
Tripotassium Phosphate
b)
Tripotassium Phosphite
c)
Potassium phosphide
d)
Potassium phosphate
8.
What is the name of Al(NO3)3?
a)
Aluminum trinitrate
b)
Monoaluminum nitrate
c)
Aluminum (III) nitrate
d)
Aluminum Nitrate
9.
What is the name of Mg(OH)2?
a)
Magnesium Hydride
b)
Magnesium Dihydride
c)
Magnesium Dihydroxide
d)
Magnesium Hydroxide
10.
The formula of calcium phosphate is 
a)
CaPO4
b)
Ca2(PO4)3
c)
Ca3PO4
d)
Ca3(PO4)2
11.
The chemical compound for sodium phosphate would be:
a)
NaPO4
b)
Na2PO4
c)
Na3PO4
d)
Na(PO4)3
12.
Cu +2  and  OH -
a)
CuOH2
b)
Cu2OH
c)
Cu(OH)2
d)
correct answer is not given
13.
NH4 +1  and  C2O4 -2
a)
NH4C2O4
b)
(NH4)2C2O4
c)
NH4(C2O4)2
d)
correct answer is not given
14.
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
15.

How many atoms are present in CaCO3?

a)

5

b)

2

c)

4

d)

6

16.

How many ions are in NaOH?

a)

1

b)

2

c)

3

d)

4

17.

How many ions are in Na2SO4?

a)

2

b)

3

c)

6

d)

7

18.

How many atoms are present in (NH4)2SO4?

a)

3

b)

10

c)

15

d)

12

19.

True or False: Prefixes are used when naming ionic compounds.

a)

True

b)

False

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