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AQA Chemistry Separate Science > 11. Qualitative Chemistry (Tests for ions) > Flashcards

11. Qualitative Chemistry (Tests for ions) Flashcards

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1
Q

What is the positive test for hydrogen?

A

Lit splint + squeaky pop

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2
Q

What is the positive test for oxygen?

A

Relights a glowing splint

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3
Q

What is the positive test for carbon dioxide?

A

Turns limewater cloudy

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4
Q

What is the positive test for carbonate ions?

A

Add hydrochloric acid and bubble the evolved gas through limewater which goes cloudy

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5
Q

What is the positive test for sulfate ions?

A

Barium chloride forms a white precipitate

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6
Q

What is the positive test for chloride ions?

A

Silver nitrate forms a white precipitate

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7
Q

What is the positive test for iodide ions?

A

Silver nitrate forms a yellow precipitate

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8
Q

What is the positive test for bromide ions?

A

Silver nitrate forms a cream precipitate

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9
Q

What is the positive test for iron(II) ions?

A

Sodium hydroxide forms a black/green precipitate

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10
Q

What is the positive test for iron(III) ions?

A

Sodium hydroxide forms a orange/brown precipitate

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11
Q

What is the positive test for copper(II) ions?

A

Sodium hydroxide forms a blue precipitate

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12
Q

What is the positive test for magnesium ions?

A

Sodium hydroxide forms a white precipitate

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13
Q

What is the positive test for aluminium ions?

A

Sodium hydroxide forms a white precipitate which quickly dissolves

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14
Q

What is the positive test for calcium ions?

A

Sodium hydroxide forms a white precipitate + flame test produces orange flame

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15
Q

What is the positive test for lithium ions?

A

flame test produces red/crimson flame

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16
Q

What is the positive test for potassium ions?

A

flame test produces lilac flame

17
Q

What is the positive test for sodium ions?

A

flame test produces orange flame

AQA Chemistry Separate Science (8 decks)

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