SNC2D: Chemistry
Name: _____________________________
Practice: Writing Formulas and Names of Compounds: ANSWERS
1. Write the chemical formulas for the following ionic compounds.
ZnCl2
mercury (II) sulphide HgS
CaI2
calcium iodide
FeN
iron (III) nitride
FeBr2
iron (II) bromide
aluminum phosphide AlP
Ni2S3
nickel (III) sulphide
Li3N
lithium nitride
AgI
silver iodide
MgO
magnesium oxide
manganese (IV) oxide MnO2
a) zinc chloride
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
SnS
CoBr3
m) cobalt (III) bromide
Be3P2
n) beryllium phosphide
KF
o) potassium fluoride
PbF2
p) lead (II) fluoride
Hg2S
q) mercury (I) sulphide
AuN
r) gold (III) nitride
CuO
s) copper (II) oxide
NaCl
t) sodium chloride
CaS
u) calcium sulphide
v) magnesium phosphide Mg3P2
l) tin (II) sulphide
2. Write the names for the following ionic compounds.
manganese (IV) sulphide
calcium oxide
CaO
Zn3P2 zinc phosphide
iron (III) phosphide
FeP
sodium iodide
NaI
HgBr2 mercury (II) bromide
Cu2S copper (I) sulphide
Al2S3 aluminum sulphide
lead (II) sulphide
PbS
PbS2 lead (IV) sulphide
MgBr2 magnesium bromide
a) MnS2
l) AgF
b)
m) CoI2
c)
d)
e)
f)
g)
h)
i)
j)
k)
n) NiCl2
o) BeI2
p) Sn3P4
q) Sn3P2
r) MnS
s) Li2O
t) K3P
u) Au2S
v) Na3N
silver fluoride
cobalt (II) iodide
nickel (II) chloride
beryllium iodide
tin (IV) phosphide
tin (II) phosphide
manganese (II) sulphide
lithium oxide
potassium phosphide
gold (I) sulphide
sodium nitride
3. Write the chemical formulas for the following polyatomic compounds.
Be(ClO3)2
HClO3
chloric acid
Sn(CO2)2
tin (IV) carbonite
Cu(NO3)2
copper (II) nitrate
Ni3(PO4)2
nickel (II) phosphate
PbCO3
lead (II) carbonate
AlPO4
aluminum phosphate
HClO2
chlorous acid
Li2SO4
lithium sulphate
manganese (IV) sulphite Mn(SO3)2
HNO3
nitric acid
a) beryllium chlorate
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
H2SO4
Na2CO3
m) sodium carbonate
NaHCO3
n) sodium bicarbonate
H3PO3
o) phosphorous acid
AgClO2
p) silver chlorite
AuNO2
q) gold (I) nitrite
Pb(OH)4
r) lead (IV) hydroxide
H2CO3
s) carbonic acid
Hg2SO4
t) mercury (I) sulphate
u) cobalt (III) bicarbonate Co(HCO3)3
Zn3(PO3)2
v) zinc phosphite
l) sulphuric acid
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4. Write the names for the following polyatomic compounds.
a) Hg(ClO3)2
b) Ca(NO3)2
c) H2SO3
d) Mn3(PO3)4
e) AgHCO3
f) BeCO2
g) ZnSO3
h) Au2(CO3)3
i) NaClO2
j) HNO2
k) Sn(NO2)2
mercury (II) chlorate
calcium nitrate
sulphurous acid
manganese (IV) phosphite
silver bicarbonate
beryllium carbonite
zinc sulphite
gold (III) carbonate
sodium chlorite
nitrous acid
tin (II) nitrite
l) H3PO4
m) Fe3(PO4)2
n) Ni2(SO4)3
o) Pb(CO3)2
p) Mg(NO3)2
q) H2CO3
r) NaOH
s) Co(HCO3)2
t) HClO3
u) HNO3
v) Be(OH)2
phosphoric acid
iron (II) phosphate
nickel (III) sulphate
lead (IV) carbonate
magnesium nitrate
carbonic acid
sodium hydroxide
cobalt (II) bicarbonate
chloric acid
nitric acid
beryllium hydroxide
5. Write the chemical formulas for the following molecular compounds.
CF4
N2O3
dinitrogen trioxide
SiC
silicon carbide
CO2
carbon dioxide
diphosphorus pentoxide P2O5
XeF6
xenon hexafluoride
CO
carbon monoxide
NO2
nitrogen dioxide
O2
oxygen gas
diphosphorus trisulphide P2S3
OF3
oxygen trifluoride
a) carbon tetrafluoride
l) hydrogen peroxide
b)
m) dinitrogen pentasulphide
c)
d)
e)
f)
g)
h)
i)
j)
k)
n) methane
o) silicon dioxide
p) ammonia
q) phosphorus tribromide
r) nitrogen gas
s) sulphur tetrafluoride
t) nitrogen monoxide
u) iodine difluoride
v) chlorine gas
H2O2
N 2S 5
CH4
SiO2
NH3
PBr3
N2
SF4
NO
IF2
Cl2
6. Write the names for the following molecular compounds.
a) Br2
b) P2O5
c) N2O3
d) SF7
e) PBr3
f) H2O
g) CS2
h) CO
i) H2
j) SO3
k) NO
bromine
diphosphorous pentoxide
dinitrogen trioxide
sulphur heptafluoride
phosphorous tribromide
water
carbon disulphide
carbon monoxide
hydrogen
sulphur trioxide
nitrogen monoxide
l) P2O4 diphosphorous tetroxide
m) SiO2 silicon dioxide
fluorine
o) H2O2 hydrogen peroxide
p) OF2 oxygen difluoride
q) NH3 ammonia
r) N2O5 dinitrogen pentoxide
iodine
s) I2
t) ICl2 iodine dichloride
u) PCl5 phosphorous pentachloride
v) P4O6 tetraphosphorous hexoxide
n) F2
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