Chemistry colours and tests i need to memorise!

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Colours of select elements, colours of indicators, quantitative analysis (flame for metal ions, anion, aqueous cation, and gases

Last updated 3:34 PM on 7/25/26
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57 Terms

1
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Which anion test fits anions: chloride, bromide, iodide

acidify with dilute nitric acid, add aqueous silver nitrate

2
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What is the result of anion test of chlorine, bromine and iodide in solution respectively

white, cream and yellow ppt respectively.

3
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anion test for carbonate and result

add dilute acid, test for CO2 gas. Result: effervescence and CO2 produced

4
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anion test for nitrate in solution and result

add aqueous sodium hydroxide and aluminium foil, warm carefully. Result: ammonia

5
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anion test for sulfate in solution and result

acidify with dilute nitric acid, add aqueous barium nitrate. Result: white ppt

6
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anion test for sulfite and result

add small volume of acidified aqueous potassium manganate. Result: it changes from purple to colourless

7
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2 tests of aqueous cations

aqueous sodium hydroxide and aqueous ammonia

8
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Effect of aqueous sodium hydroxide on aluminium

white ppt, soluble in excess, colourless solution

9
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Effect of aqueous sodium hydroxide on ammonium

ammonia produced on warming

10
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Effect of aqueous sodium hydroxide on calcium

white ppt insoluble in excess

11
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Effect of aqueous sodium hydroxide on chromium

green ppt, soluble in excess

12
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Effect of aqueous sodium hydroxide on copper

light blue ppt, insoluble in excess

13
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Effect of aqueous sodium hydroxide on iron (II)

Green ppt, insoluble in excess, ppt turns brown near surface on standing

14
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Effect of aqueous sodium hydroxide on iron (III)

red brown ppt, insoluble in excess

15
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Effect of aqueous sodium hydroxide on zinc

white ppt, soluble in excess, giving colourless solution

16
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Effect of aqueous ammonia on aluminium

17
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Effect of aqueous ammonia on ammonium

nothing

18
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Effect of aqueous ammonia on calcium

19
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Effect of aqueous ammonia on chromium

20
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Effect of aqueous ammonia on copper

21
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Effect of aqueous ammonia on iron (II)

22
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Effect of aqueous ammonia on iron (III)

23
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Effect of aqueous ammonia on zinc

24
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test for ammonia gas

turns damp red litmus paper blue

25
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test for carbon dioxide gas

turns limewater milky

26
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test for chlorine gas

bleaches damp litmus paper

27
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test for hydrogen gas

pops with lighted splint

28
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test for oxygen gas

relights with glowing splint

29
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test for sulfur dioxide gas

turns acidified aqueous potassium manganate from purple to colourless

30
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Flame test for lithium

red

31
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Flame test for sodium

yellow

32
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Flame test for potassium

lilac

33
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Flame test for copper

blue-green

34
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Flame test for calcium

orange red

35
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Flame test for barium

light green

36
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state and colour at RTP of fluorine

yellow gas

37
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state and colour at RTP of chlorine

green gas

38
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state and colour at RTP of bromine

orange brown liquid

39
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state and colour at RTP of iodine

blue black solid

40
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colour of fluorine when aqueous

light yellow

41
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colour of chlorine when aqueous

pale yellow green

42
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colour of bromine when aqueous

red orange

43
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colour of iodine when aqueous

red brown

44
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colour of any group one or ammonium when solid and solution

white powder when solid and colourless when solution

45
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colour of transition metals when solid and solution

Anhydrous: white powder

Hydrated: coloured crystals

Solution: coloured solutions

46
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colour of copper sulfate when solid and solution

Anhydrous: white powder

Hydrated: blue crystals

Solution: blue solution

47
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colour of cobalt chloride when solid and solution

Anhydrous: blue

Hydrated: pink

Solution: pink

48
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4 different indicators

Universal, methyl orange, phenolphthalein, litmus

49
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Colours of universal indicator in acid, neutral and alkali

red-yellow, green, blue purple

50
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Colours of methyl orange in acid, neutral and alkali

red, no change, yellow

51
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colours of phenolphthalein in acid, neutral and alkali

Colourless, colourless, pink

52
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colours of litmus in acid, neutral and alkali

red, no change, blue

53
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colour of sulphur

yellow solid

54
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colour of copper

brown/pink solid

55
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colour of most metals

silver/grey solid

56
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colour of all noble gases

colourless

57
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colour of soot (carbon)

black