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GCSE Chemistry > C12 - Chemical Analysis > Flashcards

C12 - Chemical Analysis Flashcards

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1
Q

What is a pure substance?

A

One with only one type of atom.

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2
Q

What is a formulation?

A

A mixture designed for a useful product, e.g. ketchup, fertiliser, cleaning agents

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3
Q

What is the test for chlorine?

A

Bleaches litmus paper

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4
Q

When NaOH added, what happens to calcium?

A

White precipitate formed

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5
Q

When NaOH added, what happens to magnesium?

A

White precipitate formed

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6
Q

When NaOH added, what happens to aluminium?

A

White precipitate formed then redissolves when excess NaOH added.

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7
Q

When NaOH added, what happens to copper?

A

Blue precipitate formed

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8
Q

When NaOH added, what happens to iron(ll)?

A

Green precipitate formed

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9
Q

When NaOH added, what happens to iron(lll)?

A

Brown precipitate formed

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10
Q

When diluted acid and silver nitrate added, what happens to chlorine?

A

White precipitate formed

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11
Q

When diluted acid and silver nitrate added, what happens to bromine?

A

Cream precipitate formed

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12
Q

When diluted acid and silver nitrate added, what happens to iodine?

A

Yellow precipitate formed

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13
Q

What is the test for carbonate?

A

Add dilute hydrochloric acid to solid then bubble gas through limewater. Limewater should turn cloudy.

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14
Q

What is the test for a sulphate ion?

A

Add hydrochloric acid and barium chloride. If white precipitate is formed, sulphate ions are present.

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15
Q

Lithium flame test

A

crimson

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16
Q

Sodium flame test

A

yellow

17
Q

Potassium flame test

A

lilac

18
Q

Copper flame test

A

green

19
Q

Calcium flame test

A

orange

20
Q

What is instrumental analysis?

A

Use of scientific equipment to detect elements and compounds. It is accurate, sensitive and rapid.

21
Q
A

GCSE Chemistry (3 decks)

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