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C3 > C3.4 > Flashcards

C3.4 Flashcards

1
Q

What can a range of chemical tests be used for

A

The detection and identification of elements and compounds

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2
Q

What can titration be used for

A

To find the amounts of acid or alkali in a solution

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3
Q

What can flame tests be used for

A

To identify metal ions.

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4
Q

What 5 compounds produce distinctive colours in flame tests

A 
Lithium 
Sodium 
Potassium 
Calcium
Barium
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5
Q

What colour flame does lithium compounds result in

A

Crimson flame

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6
Q

What colour flame does sodium compounds result in

A

Yellow flame

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7
Q

What colour flame does potassium compounds result in

A

Lilac flame

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8
Q

What colour flame does calcium compounds result in

A

Red flame

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9
Q

What colour flame does barium compounds result in

A

Green flame

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10
Q

What 3 ions form white precipitates with sodium hydroxide solution

A

Aluminium
Calcium
Magnesium

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11
Q

What does aluminium hydroxide precipitates only do

A

Dissolve in excess sodium hydroxide solution

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12
Q

What 3 ions form coloured precipitates with sodium hydroxide solution

A

Copper(ll)
Iron(ll)
Iron(lll)

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13
Q

What colour precipitates does copper form with sodium hydroxide solution

A

Blue precipitates

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14
Q

What colour precipitates does iron (ll) form with sodium hydroxide solution

A

Green precipitates

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15
Q

What colour precipitates does iron (lll) form with sodium hydroxide solution

A

Brown precipitates

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16
Q

What do carbonates react with to form carbon dioxide

A

Dilute acids

17
Q

What colour precipitate does carbon dioxide produce with limewater

A

White

18
Q

What does carbon dioxide do to limewater

A

Make it cloudy

19
Q

What do halide ions in solution produce with silver nitrate solution in the presence of dilute nitric acid

A

Precipitates

20
Q

What colour is the precipitate that chlorine ions produce with silver nitrate solution

A

Silver chloride is White

21
Q

What colour is the precipitate that bromine ions produce with silver nitrate solution

A

Silver bromide is cream

22
Q

What colour is the precipitate that iodine ions produce with silver nitrate solution

A

Silver iodide is yellow

23
Q

In the presence of dilute hydrochloric acid what do sulphate ions in solutions produce with barium chloride

A

White precipitates

24
Q

How can the volumes of acid and alkali solutions that react with each other be measured

A

By titration using a suitable indicator

25
Q

What can titration be used for if the concentration of one of the reactants is known

A

To find the concentration of the other reactant

C3 (6 decks)

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