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Chemistry > Chemical analysis > Flashcards

Chemical analysis Flashcards

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1
Q

What is the test and result for Hydrogen gas

A

Test: Lit splint
Result: Squeaky pop

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2
Q

What is the test and result for Oxygen gas

A

Test: Glowing splint
Result: Relights

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3
Q

What is the test and result for Carbon Dioxide

A

Test: Bubble through limewater
Result: Limewater turns cloudy

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4
Q

What is the test and result for Ammonia gas (NH3)

A

Test: Damp pink litmus
Result: turns blue

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5
Q

What is the test and result for Chlorine Gas

A

Test: Damp blue litmus
Result: Turns pink then bleaches white

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6
Q

What is the test and result for Water (H2O)

A

Test: Blue colbalt chloride (CoCl2)
Result: Paper turns pink

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7
Q

What is the other test for Water

A

Test: White anhydrous CopperII Sulphate powder
Result: turns blue

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8
Q

What is the test for purity in water

A

Boils at 100 degrees
Melts at 0 degrees

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9
Q

What happens to the melting and boiling point if the water isn’t pure

A

Melting point decrease
Boiling point increases

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10
Q

What is the test and result for lithium ions

A

Test: flame test
Result: Crimson (Red) flame

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11
Q

What is the test and result for sodium ions

A

Test: flame test
Result: Yellow flame

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12
Q

What is the test and result for potassium ions

A

test: flame test
result: lilac (purple) flame

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13
Q

What is the test and result for calcium ions

A

test: flame test
result: orange-red flame

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14
Q

What are the tests and result for Copper II ions

A

test: flame test
result: blue-green flame
test: Add sodium hydroxide
Result: blue precipitate

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15
Q

What is the ionic equation for Copper II ions using NaOH

A

Cu (aq) + 2OH (aq) = Cu(OH)2 (s)

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16
Q

What is the test and result for Iron (III) ions

A

test: Add sodium hydroxide NaOH
Result: Brown precipitate

17
Q

What is the ionic equation for Iron (III) ions using NaOH

A

Fe3+ (aq) + 3OH (aq) = Fe(OH)3 (s)

18
Q

What is the test and result for Iron (II) ions

A

Test: Add sodium hydroxide NaOH
result: green precipitate

19
Q

What is the ionic equation for Iron (II) ions using NaOH

A

Fe2+ (aq) + 2OH (aq) = Fe(OH)2 (s)

20
Q

What is the test and result for Ammonium NH4+

A

Test: Add sodium hydroxide NaOH and then warm gently
Result: Damp pink litmus turns blue

21
Q

What is the test and result for Carbonate CO3 2-

A

Test: add dilute acid e.g. HCl
Result: Bubbles of gas (that turn limewater cloudy)

22
Q

What is the test and result for Sulfate ions SO4 2-

A

Test: Add Hydrochloric Acid (HCl) and then add Barium Chloride Solution (BaCl2)
Result: White precipitate

23
Q

What is the ionic equation for Sulphate ions using Barium Chloride

A

Ba2+ (aq) + SO4 2- (aq) = BaSO4 (s)

24
Q

What is the test and result for chloride ions

A

Test: Add nitric acid (HNO3) followed by silver nitrate solution AgNO3
Result: White precipitate

25
Q

What is the ionic equation for Chloride Cl- ions using Silver nitrate

A

Ag+ (aq) + Cl- (aq) = AgCl (s)

26
Q

What is the test and result for bromide ions

A

Test: Add nitric acid (HNO3) followed by silver nitrate solution AgNO3
Result: Cream precipitate

27
Q

What is the ionic equation for Bromide Br- ions using Silver nitrate

A

Ag+ (aq) + Br - (aq) = AgBr(s)

28
Q

What is the test and result for Iodide ions

A

Test: Add nitric acid (HNO3) followed by silver nitrate solution AgNO3
Result: Yellow precipitate

29
Q

What is the ionic equation for Iodide ions using Silver nitrate

A

Ag+ (aq) + I- (aq) = AgI (s)

30
Q

Why would you add acid to the substance

A

To neutralise impurities

31
Q

Hydroxide, ammonium, carbonate, nitrate, sulfate, silver and zinc formula

A

OH-, NH4+, CO3 2-, NO3-, SO4 2-, Ag+, Zn 2+

32
Q

What are the diatomic atoms

A

H2, N2, F2, O2, I2, Cl2, Br2

Chemistry (5 decks)

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