Chemical Tests

Testing for anions, cations, gases and flame tests
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Terms in this set (...)

Carbonate CO3(2-)
dilute acid

effervescence, carbon dioxide produced
Chloride Cl(-)
dilute nitric acid, silver nitrate(aq)

white precipitate
Bromide Br(-)
dilute nitric acid, silver nitrate(aq)

cream precipitate
Iodide I(-)
dilute nitric acid, silver nitrate(aq)

yellow precipitate
Nitrate NO3(-)
sodium hydroxide(aq), aluminum foil, warm

ammonia produced
Sulfate SO4(2-)
acidify, barium nitrate(aq)

white precipitate
Sulfite SO3(2-)
dilute hydrochloric acid, warm

sulfur dioxide produced
Aluminium Al(3+) with NaOH(aq)
white precipitate
soluble in excess giving a colorless solution
Ammonium NH4(+) with NaOH(aq)
ammonia produced on warming
Calcium Ca(2+) with NaOH(aq)
white precipitate
insoluble in excess
Chromium Cr(3+) with NaOH(aq)
green precipitate
soluble in excess
Copper Cu(2+) with NaOH(aq)
light blue precipitate
insoluble in excess
Iron Fe(2+) with NaOH(aq)
green precipitate
insoluble in excess
Iron Fe(3+) with NaOH(aq)
red-brown precipitate
insoluble in excess
Zinc Zn(2+) with NaOH(aq)
white precipitate
soluble in excess, giving a colorless solution
Aluminium Al(3+) with NH3(aq)
white precipitate
insoluble in excess
Calcium Ca(2+) with NH3(aq)
no precipitate or very slight white precipitate
Chromium Cr(3+) with NH3(aq)
grey-green precipitate
insoluble in excess
Copper Cu(2+) with NH3(aq)
light-blue precipitate
soluble in excess, giving a dark blue solution
Iron Fe(2+) with NH3(aq)
green precipitate
insoluble in excess
Iron Fe(3+) with NH3(aq)
red-brown precipitate
insoluble in excess
Zinc Zn(2+) with NH3(aq)
white precipitate
soluble in excess, giving a colorless solution
Ammonia NH3
Litmus Paper turns blue
Carbon Dioxide CO2
Limewater turns milky/cloudy
Chlorine Cl2
Bleaches damp litmus paper
Hydrogen H2
Pop Test
Pops with a lighted splint
Oxygen O2
relights a glowing splint
Sulfur Dioxide SO2
acidified Potassium Manganate(aq) turns from purple to colorless
Lithium Li(+) flame color
red
Sodium Na(+) flame color
yellow
Potassium K(+) flame color
lilac
Copper Cu(2+) flame color
blue-green