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Chemistry IGCSE > Flame tests > Flashcards

Flame tests Flashcards

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1
Q

Test for hydrogen

A

burning splint

squeaky pop

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2
Q

Test for oxygen

A

glowing splint

splint relights

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3
Q

Test for carbon dioxide

A

bubble the gas through limewater (calcium hydroxide)

turns milky

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4
Q

Test for ammonia

A

damp red litmus paper

turns blue

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5
Q

ammonia reaction with hydrogen chloride gas

A

forms a white smoke of ammonium chloride

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6
Q

flame test - description

A

Take a sample of a metal on a wire and put it in a flame, the flame will turn a specific color

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7
Q

flame test - lithium

A

red

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8
Q

flame test - sodium

A

yellow

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9
Q

flame test - potassium

A

lilac

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10
Q

flame test - calcium

A

orange red

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11
Q

flame test - copper

A

blue green

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12
Q

ion test (cation) - description

A

using NaOH(aq) to identify the gas evolved

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13
Q

ion test (cation) - ammonia

A

forms NH3

turns red damp litmus paper blue

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14
Q

ion test (cation) - copper (II)

A

blue precipitate

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15
Q

ion test (cation) - Iron (II)

A

green precipitate

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16
Q

ion test (cation) - Iron (III)

A

brown precipitate

17
Q

ion test (anion) - description

A

using acidified silver nitrate solution

acidified barium chloride solution

hydrochloric acid

18
Q

ion test (anion) - halide

A

add dilute nitrate acid, followed by silver nitrate solution

chloride - white precipitate
bromide - cream precipitate
iodide - yellow precipitate

19
Q

ion test (anion) - sulfate

A

add dilute hydrochloric acid, followed by barium chloride solution

white precipitate forms

20
Q

ion test (anion) - carbonate ions

A

react with dilute acids to create carbon dioxide

this gas can be bubbled through limewater

21
Q

presence of water - copper

A

use anhydrous copper (II) sulfate

turns from white to blue

22
Q

presence of water - cobalt

A

use anhydrous cobalt (II) sulfate

turns from pink to blue

Chemistry IGCSE (1 decks)

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