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Water
H₂O
Table salt
NaCl
Baking soda
NaHCO₃
Bleach
NaOCl
Caustic soda / lye
NaOH
Ammonia
NH₃
Vinegar (acetic acid)
HC₂H₃O₂ or CH₃COOH
Rubbing alcohol (ethanol)
C₂H₅OH
Wood alcohol (methanol)
CH₃OH
Chalk / marble / limestone
CaCO₃
Quicklime
CaO
Slaked lime / limewater
Ca(OH)₂
Rust
Fe₂O₃ (or Fe₃O₄)
Sand / quartz
SiO₂
Laughing gas
N₂O
Methane (natural gas)
CH₄
Vitamin C
C₆H₈O₆
Simple sugar (glucose)
C₆H₁₂O₆
Double sugar (sucrose)
C₁₂H₂₂O₁₁
Quicksilver (mercury element)
Hg
Epsom salts
MgSO₄
Magnesia
MgO
Soda ash
Na₂CO₃
Potash
K₂CO₃
Saltpeter
NaNO₃
Glauber's salt
Na₂SO₄
Hypo (photography)
Na₂S₂O₃
Alum
AlK(SO₄)₂·12H₂O
Gypsum / plaster of paris
CaSO₄
Chloroform
CHCl₃
Formaldehyde
HCHO
Benzene
C₆H₆
Acetone
CH₃COCH₃
Glycerin
C₃H₅(OH)₃
Naphthalene (mothballs)
C₁₀H₈
Oleic acid
C₁₈H₃₄O₂
Hydrogen
H₂
Oxygen
O₂
Nitrogen
N₂
Fluorine
F₂
Chlorine
Cl₂
Bromine
Br₂
Iodine
I₂
Astatine
At₂
Phosphorus
P₄ (tetratomic)
Sulfur
S₈ (octatomic)
Selenium
Se₈
Arsenic
As₂ or As₄
Antimony
Sb₄