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- Chemical Tests

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Total cards: 13•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (13)

#1
Front (Question)

Hydrogen

Back (Answer)

Lit splint makes a squeaky pop

#2
Front (Question)

Oxygen

Back (Answer)

Relights glowing splint

#3
Front (Question)

Carbon Dioxide

Back (Answer)

• Bubble through limewater - Turns milky (white precipitate of CaCO3)

#4
Front (Question)

Carbonates

Back (Answer)

• React with acids - Effervescence, CO2 test

#5
Front (Question)

Sulfates

Back (Answer)

• Add barium chloride - White precipitate of barium sulfate

#6
Front (Question)

Cu2+ ion

Back (Answer)

• Add dilute sodium hydroxide - Blue, gelatinous precipitate of Cu(OH)2

#7
Front (Question)

Fe2+ ion

Back (Answer)

• Add dilute sodium hydroxide - Green, gelatinous precipitate of Fe(OH)2

#8
Front (Question)

Fe3+

Back (Answer)

• Add dilute sodium hydroxide - Rust-brown, gelatinous precipitate of Fe(OH)3

#9
Front (Question)

Alcohols

Back (Answer)

• Add potassium dichromate and sulfuric acid - Orange to green

#10
Front (Question)

Alkenes

Back (Answer)

• Add bromine - Orange to colourless

#11
Front (Question)

Ammonia/Ammonium Salts

Back (Answer)

• Damp red litmus paper - Turns blue

#12
Front (Question)

Halide ions

Back (Answer)

• Add silver nitrate • Chlorine -> white • Bromine -> cream • Iodine -> yellow

#13
Front (Question)

NH4+ ions

Back (Answer)

• Add aqueous OH- - Ammonia produced (damp red litmus paper turns blue)