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Chemistry > C4 > Flashcards

C4 Flashcards

Predicting and identifying reactions and products

1
Q

How do you test for carbon dioxide?

A

Limewater

Calcium hydroxide

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2
Q

How do you test for chlorine?

A

Blue litmus paper will turn red and then white.

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3
Q

How do you test for hydrogen?

A

A lit split will ignite with a squeaky pop in oxygen

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4
Q

How do you test for oxygen?

A

Glowing splint will reignite in oxygen

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5
Q

What colour flame will lithium make?

A

Red flame

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6
Q

What colour flame will sodium make?

A

Yellow flame

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7
Q

What colour flame will potassium make?

A

Lilac flame

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8
Q

What colour flame will calcium make?

A

Orange-red flame

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9
Q

What colour flame will copper make?

A

Green-blue flame

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10
Q

What is the nicrome wire cleaned with?

A

Hydrochloric acid

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11
Q

What colour (hydroxide) precipitate will the ion iron II (Fe²+) make?

A

Green precipitate

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12
Q

What colour (hydroxide) precipitate will the ion iron III (Fe³+) make?

A

Orange- brown precipitate

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13
Q

What colour (hydroxide) precipitate will the ion copper II (Cu²+) make?

A

Blue precipitate

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14
Q

What colour (hydroxide) precipitate will the ion calcium (CA²+) make?

A

White precipitate

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15
Q

What colour (hydroxide) precipitate will the ion Zinc (Zn²+) make?

A

White precipitate

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16
Q

How do you test for Sulfate ions?

What is the equation?

A

Hydrochloric acid + barium chloride. White precipitate = present.
Ba ²+ (aq) + SO4 ²- (aq) –> BaSO4 (S)

17
Q

How do you test for Carbonate ions?

What is the equation?

A

Hydrogen ions/ Hydrochloric acid. Bubbles of glass = present.
2H (aq) + + Co3 ²- (aq) –> Co3 ²-. (aq) + H2O (L)

18
Q

How do you test for Halide ions?

What colours do Chloride, Bromide & Iodide make?

A

Add a few drops of dilute nitric acid and then silver nitric acid.
White- chloride
Cream- Bromide
Yellow- Iodide

19
Q

What is rentention time?

A

Time taken for a substance to travel through the chromatography column.

Chemistry (3 decks)

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