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C12 - Testing substances

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

test for hydrogen = positive

Back (Answer)

lighted splint pops

#2
Front (Question)

test for o2 = positive

Back (Answer)

a glowing splint relights

#3
Front (Question)

test fro co2

Back (Answer)

turns limewater milky

#4
Front (Question)

test for chlorine

Back (Answer)

damp blue litmus paper turns white (bleaches)

#5
Front (Question)

flame tests process

Back (Answer)

-nichrome wire loop dipped into concentrated HCL to clean it -dipped into HCL + metal compound -hold loop in blue bunsen burner flame -colour = identifies metal ion

#6
Front (Question)

flame tests

Back (Answer)

identifies metal ion by colour of flame

#7
Front (Question)

mixture of metal ions in flame test

Back (Answer)

colours can be masked

#8
Front (Question)

Li+ flame colour

Back (Answer)

crimson

#9
Front (Question)

Na+ flame colour

Back (Answer)

yellow

#10
Front (Question)

K+ flame colour

Back (Answer)

lilac

#11
Front (Question)

flame colour of Ca2+

Back (Answer)

orange - red

#12
Front (Question)

Cu2+ flame colour

Back (Answer)

green

#13
Front (Question)

Mg2+ flame colour

Back (Answer)

no colour

#14
Front (Question)

metal cation test is with

Back (Answer)

sodium hydroxide

#15
Front (Question)

metal cation test with sodium hydroxide test

Back (Answer)

identifies metal positive ions in unknown compound

#16
Front (Question)

metal cation test with sodium hydroxide for aluminium, calcium, magnesium

Back (Answer)

white precipitate

#17
Front (Question)

metal cation test with sodium hydroxide - aluminium

Back (Answer)

precipitate will dissolve

#18
Front (Question)

metal cation test with sodium hydroxide test - mg and ca

Back (Answer)

precipitate will not dissolve -then can be distinguished with a flame test

#19
Front (Question)

copper II ions colour precipitate

Back (Answer)

blue

#20
Front (Question)

iron II ions colour precipitate

Back (Answer)

green

#21
Front (Question)

iron III ions colour precipitate

Back (Answer)

brown

#22
Front (Question)

testing for carbonate

Back (Answer)

fizzing + co2 produced -when dilute acid is dded

#23
Front (Question)

group 1 carbonates

Back (Answer)

soluble whereas most aren’t

#24
Front (Question)

Halide test

Back (Answer)

add dilute nitric acid and silver nitrate solution -if a precipitate forms = present