Acid
Sulfuric acid
H2SO4
Sulfurous acid
H2SO3
Hydrochloric acid
HCl
Nitric acid
HNO3
Hydrogen sulfide
H2S
Carbonic acid
p>
H2CO3
Chemical formulas of common substances in junior high schools
Hydrogen
Carbon
Nitrogen
Oxygen
Phosphorus
Sulfur
Chlorine
(non-metallic element)
H2
C
N2
O2
P
S
Cl2
Sodium
Magnesium
Aluminum
Potassium
Calcium
Iron
Zinc
p>Copper
Barium
Tungsten
Mercury
(element metal)
Na
Mg
Al
K
Ca
Fe
Zn
Cu
Ba
W
Hg
Water
Carbon Monoxide
Carbon dioxide
Phosphorus pentoxide
Sodium oxide
Nitrogen dioxide
Silicon dioxide
H2O
CO
CO2
P2O5
Na2O
NO2
SiO2
Sulfur dioxide
Sulfur trioxide
Nitric oxide
Magnesium oxide
Copper oxide
Barium oxide
Copper oxide
SO2
SO3
NO
MgO
CuO
BaO
Cu2O
Iron oxide
Iron trioxide (iron red)
Feferric oxide
Aluminum trioxide
Tungsten trioxide
FeO
Fe2O3
Fe3O4
Al2O3
WO3
Silver Oxide
Lead Oxide
Manganese Dioxide
(Common oxides)
Ag2O
PbO
MnO2
Potassium chloride
Chlorination Sodium (table salt)
Magnesium chloride
Calcium chloride
Copper chloride
Zinc chloride
Chlorine Barium chloride
Aluminum chloride
KCl
NaCl
MgCl2
CaCl2
CuCl2
ZnCl2
BaCl2
AlCl3
Ferrous chloride
Ferric chloride
Silver chloride
(chloride/hydrochloride)
FeCl2
FeCl3
AgCl
Sulfuric acid
Hydrochloric acid
Nitric acid
Phosphoric acid
p>Hydrogen sulfide
Hydrogen bromide
Carbonic acid
(common acid)
H2SO4
HCl
HNO3
H3PO4
H2S
HBr
H2CO3
Copper sulfate
Barium sulfate
Calcium sulfate
Potassium sulfate
Magnesium sulfate
Ferous sulfate
p>Iron sulfate
CuSO4
BaSO4
CaSO4
KSO4
MgSO4
FeSO4
Fe2
(SO4)3
Aluminum sulfate
Sodium hydrogen sulfate
Potassium bisulfate
Sodium sulfite
Sodium nitrate
Potassium nitrate
Silver nitrate
Al2(SO4)3
NaHSO4
KHSO4
NaSO3
NaNO3
KNO3
AgNO3
p>
Magnesium nitrate
Copper nitrate
Calcium nitrate
Sodium nitrite
Sodium carbonate
Calcium carbonate
Magnesium carbonate
MgNO3
Cu(NO3)2
Ca(NO3)2
NaNO3
Na2CO3
CaCO3
MgCO3
Potassium carbonate
(common salt)
K2CO3
Sodium hydroxide
Calcium hydroxide
Barium hydroxide
Magnesium hydroxide
Copper hydroxide
Potassium hydroxide
Aluminum hydroxide
NaOH
Ca(OH)2
Ba(OH)2
Mg(OH)2
Cu(OH)2
KOH
Al(OH) 3
Iron hydroxide
Ferous hydroxide (common alkali)
Fe(OH)3
Fe(OH) 2
Methane
Acetylene
Methanol
Ethanol
Acetic acid
(common Organic matter)
CH4
C2H2
CH3OH
C2H5OH
CH3COOH
Alkali Formula copper carbonate
Gypsum
Gypsum of Paris
Alum
Green alum
Cu2(OH)2CO3
CaSO4?2H2O
2
CaSO4?H2O
KAl(SO4)2?12H2O
FeSO4? 7H2O
Blue vitriol
Sodium carbonate crystal
(common crystal hydrate)
CuSO4?5H2O
Na2CO3?10H2O
Urea
Ammonium nitrate
Ammonium sulfate
Ammonium bicarbonate
Potassium dihydrogen phosphate
(Common chemical fertilizers)
CO(NH2)2
NH4NO3
(NH4)2SO4
NH4HCO3
<p>KH2PO4
Precipitation:
Reddish brown flocculent precipitate--------Fe(OH)3
Light green precipitate--- ----------Fe(OH)2
Blue flocculent precipitate----------Cu(OH)2
White precipitate ---------------CaCO3, BaCO3, AgCl, BaSO4, (where BaSO4 and AgCl are white precipitates insoluble in
HNO3, CaCO3
BaCO3 is a white precipitate dissolved in HNO3
), Mg(OH)2.
light yellow precipitate (in aqueous solution)----S
Micro Soluble in water------------Ca(OH)2, CaSO4