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AS Chemistry > Important : chemical tests > Flashcards

Important : chemical tests Flashcards

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1
Q

Steps to carry out a flame test ( 3 steps )

A
  1. Dip nichrome wire into HCl then in Bunsen flame to clean it
  2. Dip nichrome wire into sample being tested
  3. Hold wire in blue Bunsen flame
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2
Q

Flame test : bright red flame =?

A

Lithium ions

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3
Q

Flame test : yellow (orange ) flame =?

A

Sodium ions

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4
Q

Flame test : lilac flame =?

A

Potassium ions

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5
Q

Flame test : brick red flame =?

A

Calcium ions

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6
Q

Flame test : apple green flame =?

A

Barium ions

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7
Q

Flame test : blue green flame =?

A

Cooper ions

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8
Q

Flame test : lithium ions = ?

A

Bright red

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9
Q

Flame test : sodium ions = ?

A

Yellow ( orange )

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10
Q

Flame test : potassium ions = ?

A

Lilac

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11
Q

Flame test : calcium ions = ?

A

Brick red

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12
Q

Flame test : barium ions = ?

A

Apple green

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13
Q

Flame test : copper ions = ?

A

Blue green

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14
Q

Sodium hydroxide test : blue precipitate =?

A

Copper ions

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15
Q

Sodium hydroxide test : dirty green precipitate =?

A

Iron ( II ) ions

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16
Q

Sodium hydroxide test : orange/brown precipitate =?

A

iron ( III ) ions

17
Q

Sodium hydroxide test : white precipitate =?

A

Calcium ions

Magnesium ions

18
Q

Sodium hydroxide test : whote precipitate ( re - dissolved with XS ) =?

A

Aluminium ions

19
Q

Sodium hydroxide test : copper ions =?

A

Blue precipitate

20
Q

Sodium hydroxide test : iron ( II ) ions =?

A

Dirty green precipitate

21
Q

Sodium hydroxide test : iron ( III ) ions =?

A

Orange/ brown precipitate

22
Q

Sodium hydroxide test : calcium ions =?

A

White precipitate

23
Q

Sodium hydroxide test : magnesium ions =?

A

White precipitate

24
Q

Sodium hydroxide test : aluminium ions =?

A

White precipitate ( re - dissolves with XS )

25
Q

Steps for surface ions test ( 3 steps )

A
  1. Sample in test tube
  2. Add HCl
  3. Add barium chloride solution
26
Q

Result of sulfate ion test ( HCl & barium chloride ) if sulfate ions are present

A

White precipitate

27
Q

Steps for halide ions test ( 3 steps )

A
  1. sample in test tube
  2. Add dilute nitric acid
  3. Add silver nitrate
28
Q

Halide ions test : white precipitate = ?

A

Chloride ions

29
Q

Halide ions test : cream precipitate = ?

A

Bromide ions

30
Q

Halide ions test : yellow precipitate = ?

A

Iodide ions

31
Q

Steps for carbonate ions test

A
  1. Add an acid ( eg. HCl )

2. Test gas given off with limewater

32
Q

Results for carbonate ions test if carbonate ions present

A

Fizzing = CO2 = turn limewater cloudy

AS Chemistry (43 decks)

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