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Naming compounds and writing formula -Year 8

Total questions: 33

Worksheet time: 1hrs 6mins

Name
Class
Date
1.
Name the following ionic compound: BeCl2
a)
beryllium chlorine
b)
beryllium II chloride
c)
beryllium chloride
d)
beryllium dichloride
2.
What is the correct formula for the compound, lithium oxide?
a)
LiO
b)
Li2O
c)
LiO2
d)
Li2O2
3.
What is the formula for manganese(III) oxide?
a)
MgO
b)
Mg2O3
c)
MnO
d)
Mn2O3
4.
The formula of calcium phosphate is 
a)
CaPO4
b)
Ca2(PO4)3
c)
Ca3PO4
d)
Ca3(PO4)2
5.
What is the name of Al(NO3)3?
a)
Aluminum trinitrate
b)
Monoaluminum nitrate
c)
Aluminum (III) nitrate
d)
Aluminum Nitrate
6.
Name the following ionic compound: Cr(NO2)3
a)
chromium nitrite
b)
chromium nitride
c)
chromium III nitride
d)
chromium III nitrite
7.

What is the correct way to write zinc fluoride in symbols

a)

ZnF2

b)

ZnF

c)

Zn2F

d)

Zn2F4

8.
The chemical formula for tin (IV) oxide is written
a)
Sn2O4
b)
Ti2O4
c)
SnO2
d)
TiO2
9.

What is the charge on the nitrogen in: NaN3

a)

1+

b)

1-

c)

3+

d)

3-

e)

None of these.

10.

Name the following compound: AgCl

a)

silver chloride

b)

silicon chloride

c)

silver monochloeride

d)

silver chlorine

e)

None of these.

11.

Name the following compound: Na2S

a)

sodium sulfide

b)

disodium sulfide

c)

sodium sulfur

d)

sodium monosulfide

e)

None of these.

12.
Formula for Potassium Sulfide?
a)
SK
b)
S2K
c)
KS
d)
K2S
13.

Which of the following is the polyatomic ion - nitrate?

a)

NO-

b)

NO2-

c)

NO3-

d)

NO4-

14.
What is the name of Mg(OH)2?
a)
Magnesium Hydride
b)
Magnesium Dihydride
c)
Magnesium Dihydroxide
d)
Magnesium Hydroxide
15.
What is the correct formula for Sodium Oxide?
a)
NaO
b)
NaO2
c)
Na2O
d)
Na2O2
16.
What is the charge on an Aluminium ion?
a)
3
b)
+3
c)
+2
d)
+1
17.
What is the charge on a chloride ion?
a)
-1
b)
1
c)
+2
d)
+1
18.
What is the charge on an Aluminium ion?
a)
3
b)
+3
c)
+2
d)
+1
19.

In the compound TiO2, Titanium has a charge of

a)

+4

b)

+3

c)

+2

d)

+1

20.
When naming ionic compounds you always write the name of the positive element  _______ .
a)
first
b)
second
c)
with "ide"
d)
with a prefix
21.

In most cases, when naming a binary compound, you change the ending of the second element to ________.

a)

-ate.

b)

-ite.

c)

-ide.

d)

-ine.

22.
How many sodium atoms can bond with one bromine atom?
a)
1
b)
2
c)
3
d)
4
23.
Fe+3 combines with S-2 to form 
a)
Fe+4(S)=3
b)
Fe2S4
c)
Fe2S3
d)
Fe3S2
24.

zinc sulfate can be written as

a)

ZnSO3

b)

ZnSO4

c)

ZnS

d)

Zn(SO4)2

25.

What's the name of LiBr?

(a)  

26.

What's the name of K3P?

(a)  

27.

What's the name of Al2O3?

(a)  

28.

Write the correct NAME of this compound:

Rules:

Write name of 1st element

Check to see if 1st element needs a Roman Numeral

2nd element change ending to 'ide'

NaCl

a)

Sodium Chloride

b)

Sodium Chlorine

c)

Chlorine Sodium

d)

Sodium (II) Chloride

29.
What is the name of Al(NO3)3?
a)
Aluminum trinitrate
b)
Monoaluminum nitrate
c)
Aluminum (III) nitrate
d)
Aluminum Nitrate
30.
Ca+2, O-2
a)
CaO
b)
OCa
c)
Ca-2O+2
d)
Ca2O2
31.

Hector claims that a single sodium ion and a single oxygen ion do not bond together to form a stable binary ionic compound. Is he correct? Why or why not?

a)

Hector is incorrect. The two ions have opposite charges, so they will bond together in a binary ionic compound.

b)

Hector is incorrect. The two ions have more than eighteen protons, so they will bond together in a binary ionic compound.

c)

Hector is correct. The sum of the charges of the two ions must be zero in order for them to form a stable ionic compound.

d)

Hector is correct. The sum of the protons of the two ions must be divisible by eight in order for them to form a stable ionic compound.

32.

Potassium (K), an alkali metal, and magnesium (Mg), an alkaline earth metal, both combine readily with bromine (Br), a halogen. What compound will each element (K and Mg) most likely form with bromine?

a)

KBr and Mg2Br

b)

KBr and MgBr

c)

K2Br and Mg2Br

d)

KBr and MgBr2

33.

Unknown element W has 2 valence electrons. Unknown element X has 7 valence electrons. Which formula shows the most likely outcome when elements W and X react?

a)

WX

b)

WX2

c)

W2X

d)

W2X2

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