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Formulae of compounds

Total questions: 60

Worksheet time: 38mins

Name
Class
Date
1.
NaCl represents 
a)
Sodium bicarbonate
b)
Sodium carbonate
c)
Sodium Chloride
d)
Calcium Carbonate
2.
NaOH represents 
a)
Sodium bicarbonate
b)
Sodium carbonate
c)
Sodium Chloride
d)
Sodium Hydroxide
3.

CaCO3 represents

a)

Sodium bicarbonate

b)

Sodium carbonate

c)

Sodium Chloride

d)

Calcium Carbonate

4.

What is the total number of oxygen atoms in Ca3(PO4)2?

a)

2

b)

4

c)

6

d)

8

e)

40

5.

Formula of Potassium Chloride

a)

KCl2

b)

KCl

c)

KClO

d)

KClO3

6.

What is the formula for iron(II) oxide?

a)

FeO2

b)

FeO

c)

Fe2O

d)

Fe2O3

7.
What is the correct chemical formula for water?
a)
H2O
b)
HO2
c)
H2O
d)
H2O
8.

Ba2+ and Cl- create...

a)

Ba2Cl

b)

BaCl2

c)

Ba2Cl2

d)

BaCl

9.

Ca2+ and F- create...

a)

Ca2F2

b)

Ca3F

c)

CaF2

d)

Ca2F

10.
How do the following two elements bond together?
Al3+  O2-         
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
11.
Ca+2, O-2
a)
CaO
b)
OCa
c)
Ca-2O+2
d)
Ca2O2
12.
K+, O-2
a)
KO
b)
K2O
c)
K-2O2
d)
O2K
13.

Potassium hydroxide

a)

POH

b)

KOH

c)

KO3

d)

MnO4

14.

Sodium nitrate

a)

NaNO3

b)

Na2NO3

c)

Na(NO3)2

d)

S(NO3)2

15.

Sodium bicarbonate

a)

SCO3

b)

Na2CO3

c)

Na2Co3

d)

NaHCO3

16.

Calcium bicarbonate

a)

CaHCO3

b)

Ca2CO3

c)

Ca(HCO3)2

d)

none of these

17.

Magnesium Nitrate

a)

MgNO3

b)

MgN3

c)

Mg(NO3)2

d)

Mg(NO)2

18.

Zinc Hydroxide

a)

ZnOH2

b)

ZnOH

c)

Zn(OH)2

d)

Zn2OH

19.

Copper(II) sulphate

a)

CuS

b)

CuSO4

c)

Cu2S

d)

Cu2S2

20.

Iron (II) Sulphide

a)

FeSO4

b)

FeS

c)

Fe2S3

d)

I2S

21.

Aluminium Hydroxide

a)

AlOH

b)

AlOH2

c)

Al2OH

d)

Al(OH)3

22.

AMMONIUM HYDROXIDE

a)

AmOH

b)

NH4OH

c)

(NH4)2OH

d)

NH4(OH)2

23.

Silver chloride

a)

AgCL

b)

AgCl2

c)

AgCl

d)

Ag2Cl

24.

Ammonium Sulphate

a)

NH4SO4

b)

NH4(SO4)2

c)

(NH4)2SO4

d)

(NH4)2CO4

25.

Lead oxide

a)

LO2

b)

LeO2

c)

PbO

d)

PbO2

26.

Fe2+ and SO42- are the ions present in

a)

FeSO4

b)

Fe4(SO4)2

c)

FeSO2

d)

correct answer is not given

27.

What compound contains the following ions:

Ca 2+ and OH -

a)

Ca2OH

b)

CaOH2

c)

Ca(OH)2

d)

correct answer is not given

28.

what is the formula formed from these ions:

SO42- and Al3+

a)

(SO4)3Al2

b)

(SO4)2Al3

c)

Al3SO4

d)

Al2(SO4)3

29.

Formula for the compound, lithium oxide?

a)
LiO
b)
Li2O
c)
LiO2
d)
Li2O2
30.

Which is an ionic compound:

a)

CH4

b)

I2

c)

LiBr2

d)

CO

31.
How do the following two elements bond together?
Al3+  O2-         
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
32.

What is the formula of Copper (II) oxide?

a)

CUO

b)

CuO

c)

CuO2

d)

Cu2O

33.

chemical formula for nitrogen gas?

a)

N2N_2

b)

N3N_3

c)

N1N_1

34.

formula for carbon dioxide

a)

CO3CO_3

b)

CO4CO_4

c)

CO2CO_2

35.

name of the compound NO2

a)

Nitrogen oxide

b)

Mononitrogen dioxide

c)

Nitrogen dioxide

d)

Dinitrogen monoxide

36.

formula for nitric acid?

a)
HNO2
b)
HNO3
c)
HNO4
d)
H2NO3
37.

What is the compound formula for the ions Zn+2 and S-2 ?

a)

ZnS

b)

Zn2S2

c)

zinc sulfide

38.
The chemical formula of potassium iodide is
a)
KI
b)
PI
c)
KI₂
d)
K₂I
39.

the formula for calcium chloride

a)
CaCl
b)
CaCl2
c)
Ca2Cl
d)
CaCl3
40.

FORMULA for.... Lead (II) iodide

a)

PbI

b)

PbI2

c)

Pb2I

d)

LbI2

41.

Name this compound: KF

a)

Potassium fluoride

b)

Potassium fluorite

c)

Fluorine potasside

d)

Potassium fluorate

42.
Write the correct chemical formula for Ag +  and  Br -
a)
AgBr
b)
silver bromide
c)
Ag2Br2
d)
gold bromide
43.
What charge does a calcium (Ca) ion have?
a)
+1
b)
+2
c)
+3
d)
+4
44.
The name of Ca₃(PO₄)₂ is
a)
calcium phosphide oxide
b)
calcium phosphate
c)
tricalcium diphosphate
d)
carbon phosphate
45.
The name of Fe(OH)₂ is
a)
iron oxide
b)
iron hydroxide
c)
iron (II) hydroxide
d)
iron dihydroxide
46.

The chemical formula of sodium sulphate is

a)
S₂SO₄
b)
NaSO₂
c)
NaSO₄
d)
Na₂SO₄
47.
What is the formula for Magnesium Carbonate?
a)
MgCO3
b)
Mg(CO3)2
c)
Mg2CO6
d)
Mg2CO3
48.

formula of Barium sulphate

a)

BaSO3

b)

BaSO4

c)

BSO4

d)

Ba(SO4)3

49.

Formula of lead nitrate

a)

PbNO3

b)

Pb2NO3

c)

Pb(NO3)2

d)

Pb2(NO3)

50.

Ammonium ion

a)

NH3

b)

NH3+

c)

NH4+

d)

none of these

51.

valency of Carbonate ion

a)

2

b)

3

c)

1

d)

0

52.

valency of HCO3-

a)

3

b)

1

c)

0

d)

5

53.

valency of Ca

a)

20

b)

1

c)

2

d)

0

54.

valency of Al

a)

1

b)

2

c)

3

d)

4

55.

Formula of Aluminium Chloride

a)

Al Cl

b)

AlCl2

c)

Al3Cl

d)

AlCl3

56.

Zinc sulphate

a)

ZnSO4

b)

Zn(SO4)2

c)

Zn(SO4)3

d)

none of these

57.

rust

a)

FeS

b)

FeO

c)

Fe3O4

d)

Fe2O3.xH2O

58.

silver sulphide

a)

AgS

b)

Ag2S

c)

HgS

d)

none of these

59.

ZinC oxide

a)

ZnO

b)

ZnO2

c)

ZnO3

d)

ZnO4

60.

formula for magnesium hydroxide:

a)
MgOH
b)
Mg2OH
c)
Mg(OH)2
d)
Mg2OH2

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