Free Printable Naming and Writing Chemical Formulas

1.

K⁺, O^-2

a)

KO

b)

K₂O

c)

K_-2O₂

d)

O₂K

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.

What is the correct name for P₃Cl₆?

a)

Potassium chloride

b)

Phosphorous chloride

c)

Triphosphorous hexachloride

d)

Tetraphosphorous heptachloride

4.

What is the correct name for MgI₂?

a)

Manganese IV iodide

b)

Manganese diiodide

c)

Magnesium iodide

d)

Magnesium diiodide

5.

The correct name of Mg₃N₂ is

a)

manganese nitride

b)

magnesium nitride

c)

magnesium (III) nitride

d)

trimagnesium dinitride

6.

What is the correct formula for hydrochloric acid?

a)

HClO

b)

ClO₃

c)

HCl

d)

HCO₃

7.

What is the correct formula for phosphorous trichloride?

a)

P₃Cl

b)

PCl₃

c)

KCl₃

d)

K₃Cl

8.

What is the correct formula for aluminum phosphide?

a)

Al₃P₃

b)

AlP

c)

AlPO₄

d)

AlPO₃

9.

What is the correct formula for dichlorine monoxide?

a)

Co₃O

b)

ClO₂

c)

Cl₂O

d)

(Cl₂)₂O

10.

What is the correct formula for carbon dioxide?

a)

C₂O₂

b)

C₂0

c)

CO

d)

CO₂

11.

The chemical formula for an ionic compound of aluminum and chlorine is

a)

AlCl.

b)

ClAl.

c)

AlCl₃.

d)

Al₃Cl.

12.

What is the correct formula for sodium sulfate?

a)

$Na_2SO_4$

b)

$NaSO_4$

c)

$Na_2(SO_4)_2$

d)

$Na_2SO_3$

13.

Which of the following is the correct name for $\text{Fe}_2\text{O}_3$ ?

a)

Iron(II) oxide

b)

Iron(III) oxide

c)

Iron oxide

d)

Ferric oxide

14.

What is the correct formula for ammonium nitrate?

a)

$NH_4NO_3$

b)

$NH_3NO_4$

c)

$(NH_4)_2NO_3$

d)

$NH_4(NO_3)_2$

15.

When writing the formula for calcium phosphate, which of the following is correct?

a)

$Ca_3(PO_4)_2$

b)

$Ca_2(PO_4)_3$

c)

$Ca_3PO_4$

d)

$Ca(PO_4)_2$

Naming and Writing Chemical Formulas

Total questions: 15

Worksheet time: 15mins

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