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IGCSE CHEMISTRY: CHEMICAL FORMULAE AND NAMING COMPOUNDS

Total questions: 108

Worksheet time: 2hrs 48mins

Name
Class
Date
1.
Ba+2, Br-1
a)
BrBa
b)
Br2Ba2
c)
BaBr2
d)
Br2Ba
2.
Ca+2, O-2
a)
CaO
b)
OCa
c)
Ca-2O+2
d)
Ca2O2
3.
The correct chemical formula for magnesium phosphide is
a)
MgP
b)
Mg₂P₃
c)
Mg₃P₂
d)
Mg₃(PO₄)₂
4.
The name of FeCl₂ is
a)
iron chloride
b)
iron (II) chloride
c)
iron (I) chloride
d)
iron dichloride
5.
K+, O-2
a)
KO
b)
K2O
c)
K-2O2
d)
O2K
6.
Ca+2P-3
a)
PCa
b)
P2Ca3
c)
CaP
d)
Ca3P2
7.
What do atoms of metals tend to do with their valence electrons when bonding with non-metals?
a)
share them
b)
donate them
c)
keep them and accept others
d)
keep them and give others
8.
What is the correct name for P₃Cl₆?
a)
Potassium chloride
b)
Phosphorous chloride
c)
Triphosphorous hexachloride
d)
Tetraphosphorous heptachloride
9.
What is the correct name for MgI₂?
a)
Manganese IV iodide
b)
Manganese diiodide
c)
Magnesium iodide
d)
Magnesium diiodide
10.
The correct name of Mg₃N₂ is
a)
manganese nitride
b)
magnesium nitride
c)
magnesium (III) nitride
d)
trimagnesium dinitride
11.
What is the correct formula for dinitrogen tetroxide?
a)
N₃O₃
b)
(N₂)₂(O₄)₃
c)
N₂O₄
d)
N₄O₂
12.
What is the correct formula for phosphorous trichloride?
a)
P₃Cl
b)
PCl₃
c)
KCl₃
d)
K₃Cl
13.
What is the correct name for SO₂?
a)
Sulfur oxide
b)
Sulfite
c)
Sulfur dioxide
d)
Sulfur II Oxide
14.
What is the correct term for "atom with a full valence shell"?
a)
positive ion (cation)
b)
negative ion (anion)
c)
neutral atom
d)
stable atom
15.
Which of the following formulas represents the harmful gas, carbon monoxide?
a)
CO
b)
CO2
c)
NO
d)
SO2
16.
What is the total number of atoms in the chemical formula shown below?
Al2(SO4)3
a)
17
b)
15
c)
10
d)
5
17.

Name for NaH

a)

sodium hydrogen

b)

potassium hydride

c)

sodium hydride

d)

potassium hydrogen

18.

Name for PBr2

a)

phosphorus bromide

b)

phosphorus dibromide

c)

phosphorus dibromine

d)

phosphorus bromine

19.

Name for LiOH

a)

lithium hydrogen oxide

b)

lithium hydroxide

c)

lithium (II) hydroxide

d)

lithium (I) hydroxide

20.

Formula for Cobalt (II) bromide

a)

CoBr

b)

Co2Br2

c)

Co2Br

d)

CoBr2

21.

Formula for sulfur dioxide

a)

S2O

b)

SO2

c)

S2O2

d)

(SO)2

22.

Formula for aluminum phosphate

a)

Al2P3

b)

Al3PO4

c)

AlP

d)

AlPO4

23.

Name for BaO

a)

Barium oxide

b)

Barium monoxide

c)

Monobarium oxide

d)

Monobarium monoxide

24.
Name the following ionic compound: BeCl2
a)
beryllium chlorine
b)
beryllium II chloride
c)
beryllium chloride
d)
beryllium dichloride
25.
What is the correct formula for the compound, lithium oxide?
a)
LiO
b)
Li2O
c)
LiO2
d)
Li2O2
26.
What is the name of Al(NO3)3?
a)
Aluminum trinitrate
b)
Monoaluminum nitrate
c)
Aluminum (III) nitrate
d)
Aluminum Nitrate
27.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide
28.
What is the name of C3Cl8 ?
a)
Carbon octachloride
b)
Tricarbon octachloride
c)
Carbon trichloride
d)
Octacarbon trichloride
29.
True or false: When naming ionic compounds, use prefixes to indicate subscripts
a)
True
b)
False
30.

How many Oxygen atoms are in H2O?

a)

1

b)

2

c)

0

d)

4

31.
Ionic compounds generally form when ____________ and ________________ react with each other.
a)
nonmetals and nonmetals
b)
metals and metals
c)
metals and nonmetals
d)
polyatomic elements & nonmetals
32.
How many valence electrons are in a fluoride ion (F-)?
a)
8
b)
7
c)
10
d)
0
33.
Which of the following is the correct name for the chemical formula Li2S?
a)
Lithium sulfate
b)
lithium sulfide
c)
lithium sulfite
d)
lithium hyposulfite
34.
phosphorus trichloride
a)
KCl3
b)
PCl3
c)
K3Cl
d)
P3Cl
35.
silicon dioxide
a)
SO2
b)
NaO2
c)
SiO2
d)
SiO
36.
diphosphorus pentoxide
a)
P2O5
b)
PO5
c)
P5O2
d)
P2O6
37.
SiCl4
a)
silicon tetrachloride
b)
silicon quadchloride
c)
monosilicon tetrachloride
d)
silicon chloride
38.
The chemical formula of sulfur hexabromide is
a)
SBr₆
b)
S₆Br
c)
S(VI)Br
d)
S6Br
39.
The chemical formula of sulfur hexabromide is
a)
SBr₆
b)
S₆Br
c)
S(VI)Br
d)
S6Br
40.
The chemical formula of carbon tetrachloride is
a)
CCl
b)
C₄Cl
c)
CCl₄
d)
C(IV)Cl
41.
The chemical formula of dinitrogen textroxide is
a)
Ni₂O₄
b)
NiO
c)
N₂O₄
d)
NiO₂
42.
The name of P₄S₁₀ is
a)
phosphorous sulfide
b)
phosphorus sulfide
c)
tetraphosphorus decasulfide
d)
phosphorus (X) sulfide
43.
The chemical formula of tetraphosphorus heptaoxide is
a)
F₄O₁₀
b)
P₄O7
c)
PO
d)
P₁₀O₄
44.
What is the OFFICIAL name for H2O
a)
Hydrogen Oxide
b)
Oxygen Dinitride
c)
Agua
d)
Dihydrogen Monoxide
45.
What is the correct name for NO?
a)
Mononitrogen Monoxide
b)
Nitrogen Monoxide
c)
Mononitrogen Dioxide
d)
Nitrogen Oxide
46.
Which of the following is NOT an ionic compound:
a)
CaO
b)
NaOH
c)
BaCl2
d)
Br2
47.

What is the name of PBr3

a)

phosphorus tribromide

b)

phosphorus bromide

c)

phosphorus (III) bromide

d)

phosphorus bromine

48.

What is the name for P2O5?

a)

phosphorus pentoxide

b)

diphosphorus pentoxide

c)

biphosphorus oxide

d)

phosphorus oxide

49.
A covalent compound made of one sulfur and two oxygen atoms would be named
a)
sulfur dioxide.
b)
sulfur oxide.
c)
disulfur oxide.
d)
sulfide oxygen.
50.
The covalent compound N2O5 would be named
a)
nitrogen oxide.
b)
dinitrogen oxide.
c)
nitrogen pentoxide.
d)
dinitrogen pentoxide.
51.

Name the following compound:

CO2

a)

monocarbon dioxide

b)

carbon oxide

c)

carbon dioxide

d)

oxygen carbonide

52.
What is the name of NF3?
a)
mononitrogen trifluoride
b)
nitrogen trifluoride
c)
nitrogen flouride
d)
nitrogen fluorine 
53.

Name the ionic compound, CaCO3

a)

calcium carbide

b)

calcium carbon trioxide

c)

calcium carbon oxide

d)

calcium carbonate

54.

Name the ionic compound, FeBr3

a)

Iron (II) bromide

b)

Iron (III) bromide

55.
K20 - name?
a)
potassium dioxide
b)
potassium oxide
c)
potassium oxygen
d)
dipotassium dioxide
56.

What is the chemical formula of sulfur hexabromide?

a)

SBr₆

b)

S₆Br

c)

S(VI)Br

d)

SBr4

57.

CaF2- name?

a)

calcium fluorate

b)

calcium fluoride

c)

fluoride calcite

d)

fluorine calciumate

58.

Na2SO4- name?

a)

sulfur sulfate

b)

sodium sulfide

c)

sodium sulfate

d)

sodium oxygenate

59.

HCl- name?

a)

hydrogen chloride

b)

chlorine hydrogen

c)

hydrogen chlorine

d)

hydrogen chlorate

60.

LiNO3- name?

a)

lithium oxygenate

b)

nitrogen lithate

c)

lithium nitride

d)

lithium nitrate

61.

MgO- name?

a)

oxygen magnesium

b)

magnesium oxide

c)

magnesium oxate

d)

magnesium oxygenate

62.

BaClO3- name?

a)

barium chlorate

b)

barium chloride

c)

chlorine bariate

d)

chlorine baride

63.

KH- name?

a)

potassium hydrate

b)

potassium hydrogen

c)

potassium hydride

d)

hydrogen potassiate

64.

LiOH- name?

a)

hydrogen lithium

b)

lithium oxyhydride

c)

lithium oxide

d)

lithium hydroxide

65.

HI

a)

-ide

b)

-ate

66.

What is the correct formula for Calcium Phosphate?

a)

Ca3(PO4)2

b)

Ca3(PO4)

c)

Ca2(PO4)

d)

Ca2(PO4)2

67.

What is the correct name for the compound with the formula (NH4)3PO4

a)

Ammonium Pyrophosphite

b)

Ammonium Phoporylate

c)

Ammonium Phosphite

d)

Ammonium Phosphate

68.

The correct name for the compound with the formula PbSO3 is

a)

Lead (II) Sulfite

b)

Lead (III) Sulfite

c)

Lead Sulfite

d)

Lead Sulfate

69.

What is the correct name for Mn(SO4)2

a)

Manganese (VI) Sulfate

b)

Manganese (IV) Sulfate

c)

Magnesium (II) Sulfide

d)

Magnesium (III) Sulfide

70.

What is the correct name for the compound with the formula NH4NO3

a)

ammonium nitrite

b)

ammonium nitrate

c)

ammonium nitride

71.

What is the correct formula for aluminum nitrate

a)

Al2(NO3)3

b)

Al(NO3)3

c)

Al(NO3)2

d)

Al2(NO3)4

72.

What is the correct name for the compound with the formula Pb(NO3)2

a)

Lead (I) Nitrate

b)

Lead Nitrite

c)

Lead (II) Nitrate

d)

Lead Nitrate

73.

What is the correct formula for iron III phosphate

a)

Fe3P4

b)

Fe(PO4)

c)

Fe2(PO4)2

d)

Fe6(PO4)3

74.

What is the correct name for (NH4)2S

a)

Ammonium sulfate

b)

Nitrogen octhydrogen sulfide

c)

Ammonium sulfide

75.

What is the proper formula for copper II bromide?

a)

CuBr

b)

CuBr2

c)

Cu2Br

76.

What is the correct name of the compound P2O5

a)

phosphorous oxide

b)

diphosphorous pentoxide

c)

phosphorous pentoxide

77.

What formula represents dinitrogen trioxide?

a)

N3O2

b)

NO2

c)

N2O3

78.

What is the name of Al2O3

a)

aluminum oxide

b)

dialuminum trioxide

c)

aluminum III oxide

79.

What is the formula for sodium bromide?

a)

NaBr

b)

NaBr2

c)

Na2Br

d)

SoBr

80.

What is the formula for diphosphorus pentoxide?

a)

P2O5

b)

PO5

c)

P5O2

d)

Po2O5

81.

How any hydrogen atoms are in water? (H2O)

a)

1

b)

2

c)

3

d)

4

82.

Na2CO3 represents

a)

Sodium bicarbonate

b)

Sodium carbonate

c)

Sodium Chloride

d)

Calcium Carbonate

83.

NaHCO3 represents

a)

Sodium bicarbonate

b)

Sodium carbonate

c)

Sodium Chloride

d)

Calcium Carbonate

84.
NaOH represents 
a)
Sodium bicarbonate
b)
Sodium carbonate
c)
Sodium Chloride
d)
Sodium Hydroxide
85.

NaNO3 represents

a)

Sodium Hydroxide

b)

Sodium Chloride

c)

Sodium Nitrite

d)

Sodium Nitrate

86.
What is the name of Ca3N2?
a)
calcium nitrogen
b)
carbon nitrogen
c)
calcium nitride
d)
carbon nitrate
87.

CF4

a)

Carbon fluoride

b)

Carbon tetrafluoride

c)

Carbon fluorine

88.

Al(OH)3 :

a)

Aluminum hydroxide

b)

Aluminum oxygen hydride

c)

Aluminum tri hydroxide

89.

K2O

a)

Potassium dioxide

b)

Di potassium oxide

c)

Potassium oxide

90.

Na3PO4

a)

Tri sodium phosphorus tetra oxide

b)

Sodium tetra phosphide

c)

Sodium phosphate

d)

Sodium tetra oxide

91.

NH4Br

a)

Ammonium bromide

b)

Tetra ammonium bromide

c)

Nitrogen tetra hydrogen bromide

92.

Tetraphosphorus trisulfide has the chemical formula ________.

a)

P3S4

b)

P4S3

c)

F3S4

d)

F4S3

93.

Ca2+ combined with SO4-2 will form CaSO4, with a molecular ratio of _________.

a)

1:1

b)

1:2

c)

1:4

d)

2:2

94.

Using the classical system, Pb(NO3)4 has the chemical name _________.

a)

Lead (I) Nitrate

b)

Lead (IV) Nitrate

c)

Plumbic Nitrate

d)

Plumbous Nitrate

95.

What is the name of this compound Br6F10?

a)

Hexabromine Decafluoride

b)

Decabromine Hexafluoride

c)

Bromine Fluoride

d)

Hexabromide Decafluorine

96.

What is the name of the following compound: CuBr2

a)

copper bromine

b)

copper bromide

c)

copper (I) bromide

d)

copper (II) bromide

97.

What is the name of the following compound: Mn2O3

a)

manganese oxide

b)

manganese (II) oxide

c)

manganese (III) oxide

d)

magnesium oxide

98.

Which is the correct formula for the compound: Calcium Oxide

a)

CaO

b)

CaO2

c)

Ca2O

99.

Which is the correct formula for the compound: Barium Hydroxide

a)

BaOH

b)

Ba(OH)2

c)

BaOH2

d)

Ba2OH

100.

Which is the correct formula for the compound: lead (II) fluoride

a)

Pb2F

b)

PbF2

c)

PbF

d)

PbF7

101.
How do the following two elements bond together?
Na1+  F1-         
a)
NaF
b)
NaF3
c)
Na3F
d)
Na1F2
102.
How do the following two elements bond together?
K1+  S2- 
a)
KS
b)
K8S
c)
K6S3
d)
K2S
103.
What is the charge on the hydroxide ion?
a)
0
b)
-1
c)
-2
d)
-3
104.
Name the following ionic compound: LiNO3
a)
lithium nitrate
b)
lithium III nitrate
c)
lithium nitride
d)
lithium oxide
105.
Name the following ionic compound: MgSO4
a)
magnesium sulfoxide
b)
magnesium sulfide
c)
magnesium sulfate
d)
magnesium oxide
106.
What would be the proper chemical formula for combining Al3+ and Cl- :
a)
AlCl3
b)
Al3Cl
c)
AlCl
d)
Al3Cl3
107.
What is the formula for calcium phosphide?
a)
CaP
b)
Ca2P3
c)
Ca3P2
d)
Ca2P
108.
The chemical formula for an ionic compound of potassium and oxygen is
a)
KO.
b)
K2O.
c)
K2O2.
d)
KO2.

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