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CHEMISTRY P2 > TESTS RP > Flashcards

TESTS RP Flashcards

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1
Q

what color flame does lithium produce?

A

crimson

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2
Q

what color flame does sodium produce?

A

yellow

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3
Q

what color flame does potassium produce?

A

lilac

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4
Q

what color flame does calcium produce?

A

orange-red

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5
Q

what color flame does copper produce?

A

green

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6
Q

test and result for calcium (cation)?

A

add sodium hydroxide

white precipitate formed

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7
Q

test and result for copper II (cation)?

A

add sodium hydroxide

blue precipitate formed

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8
Q

test and result for iron II (cation)?

A

add sodium hydroxide

green precipitate formed

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9
Q

test and result for iron III (cation)?

A

add sodium hydroxide

brown precipitate formed

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10
Q

test and result for aluminium (cation)?

A

add sodium hydroxide

white precipitate formes –> redissolves with excess NaOH

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11
Q

test and result for magnesium (cation)?

A

add sodium hydroxide

white precipitate formed

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12
Q

test and result for chlorine gas?

A

place a piece of damp litmus paper inside test tube

damp litmus paper turns red then bleaches white

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13
Q

test and result for oxygen gas?

A

place glowing splint inside test tube

the glowing splint will relight

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14
Q

test and result for carbon dioxide gas?

A

bubble gas through limewater

solution will turn cloudy

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15
Q

test and result for hydrogen gas?

A

hold lit splint at open end of test tube

should hear a squeaky pop

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16
Q

test and result for carbonates?

A

add dilute HCL
(you will see fizzing as CO2 is produced)
collect gas and bubble through lime water
lime water will turn cloudy

17
Q

test and result for sulfates?

A

add a few drops of HCL
add barium chloride solution
a white precipitate will form

18
Q

test and result for a chloride?

A

add dilute nitric acid
add silver nitrate solution
white precipitate will form

19
Q

test and result for a bromide?

A

add dilute nitric acid
add dilute silver nitrate
cream precipitate will form

20
Q

test and result for an iodide?

A

add dilute nitric acid
add dilute silver nitrate
yellow precipitate formed

21
Q

test for an alkene?

A

add bromine water

from orange/brown to colorless

22
Q

test for an alkane?

A

add bromine water

stays bright orange

CHEMISTRY P2 (1 decks)

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