Hydrogen
H2
Oxygen
O2
Nitrogen
N2
Chlorine
Cl2
Ammonia
NH3
Methane
CH4
Carbon Dioxide
CO2
Carbon dioxide
CO2
Hydrochloric acid
HCl
Sulphuric acid
H2SO4
Nitric Acid
HNO3
ammonium chloride
HN4CL
Hydrated copper sulphate
CuSO4 . 5H20
Sodium Hydroxide
NaOH
hydroxide
OH-
nitrate
NO3-
sulfate
SO42-
Carbonate
CO32-