Chemistry Tests Flashcards
Test for ammonium ions
Add sodium hydroxide
Moist red litmus paper should turn blue
Test for sulfate ions
Add hydrochloric or nitric acid and barium chloride or barium nitrate
Should produce a white precipitate
Test for ammonia
Use moist red litmus paper
Should turn blue
Test for calcium
Flame test: brick red
Test for lithium
Flame test: red
Test for test for ion(ii) ions
Add sodium hydroxide
Produces a green precipitate
Test for copper(ii) ions
Add sodium hydroxide
Produces a blue precipitate
Test for sodium
Flame test: yellow/orange
Test for carbonate ions
Add an acid
Should start to fizz
Test for chloride ions
Add nitric or sulfuric acid and silver nitrate
Should produce a white precipitate
Test for chlorine gas
Moist litmus paper(both types) bleaches
Test for bromide ions
Add nitric or sulfuric acid and silver nitrate
Should produce a cream precipitate
Test for iodide ions
Add nitric or sulfuric acid and silver nitrate
Should produce a yellow precipitate
Test for water
Add anhydrous copper sulfate
Turns blue
Test for carbon dioxide
Pour gas into limewater
Should turn cloudy
Test for iron(iii) ions
Add sodium hydroxide
Should produce a yellow/brown precipitate
Test for c=c double bonds
Add bromine water
Should decolorise
Litmus in alkali
Blue colour
Methyl orange in alkali
Yellow colour
Phenolphthalein in alkali
Pink colour
Test for hydrogen
Hold lit splint to gas
Gives off a squeaky pop
Test for oxygen gas
Hold a glowing splint to gas
Splint should re-ignite
Litmus in acid
Red colour
Methyl orange in acid
red/orange colour
Phenolphthalein in acid
Colourless
