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My Chemistry > Chemical Tests > Flashcards

Chemical Tests Flashcards

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1
Q

Gas Tests

Ammonia (NH₃)

A

Damp red litmus paper turns blue

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2
Q

Gas Tests

Carbon Dioxide (CO₂)

A

Bubble through limewater - Limewater turns cloudy

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3
Q

Gas Tests

Chlorine (Cl₂)

A

Damp blue litmus paper - Paper is bleached

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4
Q

Gas Tests

Hydrogen (H₂)

A

Hold a lighted splint in mouth of test tube - Burns with a ‘squeky pop’ sound

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5
Q

Gas Tests

Oxygen (O₂)

A

Hold a glowing splint - Splint relights

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6
Q

Flame Tests

Lithium (Li⁺)

A

Red

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7
Q

Flame Tests

Sodium (Na⁺)

A

Yellow

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8
Q

Flame Tests

Pottassium (K⁺)

A

Lilac

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9
Q

Flame Tests

Calcium (Ca²⁺)

A

Orange-Red

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10
Q

Flame Tests

Copper (Cu²⁺)

A

Blue-Green

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11
Q

Tests for Cations

Ammonium (NH₄⁺)

A

Ammonia gas produced turns damp red litmus paper blue

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12
Q

Tests for Cations

Copper (III) (Cu²⁺)

A

Light blue precipitate formed

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13
Q

Tests for Cations

Iron (II) (Fe²⁺)

A

Green precipitate formed

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14
Q

Tests for Cations

Iron (III) (Fe²⁺)

A

Red-brown precipitate formed

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15
Q

Tests for Anions

Carbonate (CO₃²⁻)

A

Add dilute acid and test the gas released
Gas produced is CO₂ which turns limewater milky

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16
Q

Tests for Anions

Chloride (Cl⁻)

A

ACidify with dilute nirtic acid and add aqueous silver nitrate
White precipitate formed

17
Q

Tests for Anions

Bromide (Br⁻)

A

Acidify with dilute nitric acid and add aqueous silver nitrate
Cream precipitate formed

18
Q

Tests for Anions

Iodide (I⁻)

A

Acidify with dilute nitric acid and add aqueous silver nitrate
Yellow precipitate formed

19
Q

Tests for Anions

Sulfate (SO₄²⁻)

A

Acidify with dilute nitric acid and add aqueous barium nitrate
White precipitate formed

My Chemistry (6 decks)

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