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Chemistry paper 2 > TESTS > Flashcards

TESTS Flashcards

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1
Q

what is the gas test for oxygen ?

A

glowing splint re-lights

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2
Q

what is the gas test for hydrogen ?

A

lit splint makes a squeaky pop over test tube

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3
Q

what is the gas test for chlorine ?

A

damp litmus paper is bleached

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4
Q

what is the gas test for carbon dioxide ?

A

when burbled through lime water goes cloudy

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5
Q

what colour flame is lithium ?

A

crimson

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6
Q

what colour flame is sodium ?

A

yellow

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7
Q

what colour flame is potassium ?

A

lilac

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8
Q

what colour flame is calcium ?

A

orange - red

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9
Q

what colour flame is copper

A

green

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10
Q

what precipitate is formed when sodium hydroxide is added to Ca2+ ?

A

white

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11
Q

what precipitate is formed when sodium hydroxide is added to Cu2+ ?

A

blue

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12
Q

what precipitate is formed when sodium hydroxide is added to Fe2+ ?

A

green

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13
Q

what precipitate is formed when sodium hydroxide is added to Fe3+ ?

A

brown

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14
Q

what precipitate is formed when sodium hydroxide is added to Al3+ ?

A

white

excess sodium hydroxide to make colourless

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15
Q

what precipitate is formed when sodium hydroxide is added to Mg2+ ?

A

white

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16
Q

what precipitate is made when silver nitrate is added to Br- ?

A

creamy

17
Q

what precipitate is made when silver nitrate is added to I- ?

A

yellow

18
Q

what precipitate is made when silver nitrate is added to Cl- ?

A

white

Chemistry paper 2 (3 decks)

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