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A2 Chemistry > Unit 5 Practical > Flashcards

Unit 5 Practical Flashcards

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1
Q

Lithium flame test

A

Red

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2
Q

Sodium flame test

A

Yellow

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3
Q

Potassium flame test

A

Lilac

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4
Q

Copper flame test

A

Blue-green

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5
Q

Barium flame test

A

Apple green

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6
Q

Calcium flame test

A

Orange red

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7
Q

Strontium flame test

A

Crimson

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8
Q

Rubidium flame test

A

Violet- red

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9
Q

Lead flame test

A

Grey

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10
Q

Magnesium flame test

A

White

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11
Q

Caesium flame test

A

Blue-violet

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12
Q

Test for sulphates?

A

HCl + BaNO3 - white ppt

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13
Q

What are the 2 carbonate tests?

A

Acid - fizzing
Limewater - cloudy

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14
Q

Test for nitrates?

A

Iron (III) sulphate + H2So4 - brown ring

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15
Q

What are the halide tests?

A

Nitric acid + silver nitrate -
chlorine = white
bromine = cream
iodine = pale yellow

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16
Q

Copper ppt colour

A

Blue

17
Q

Iron (II) ppt colour

A

Green

18
Q

Iron (III) ppt colour

A

Brown

19
Q

Chromium ppt colour

A

grey/ green

20
Q

Magnesium ppt colour

A

White

21
Q

Aluminium ppt colour

A

White - dissolves in excess NaOH

22
Q

Zinc ppt colour

A

White - dissolves in excess NaOH and NH3

23
Q

Lead ppt colour

A

White

24
Q

What are the 3 gas tests?

A

hydrogen - squeaky pop test
oxygen - relights glowing splint
carbon dioxide - splint goes out, limewater

25
Q

How to test for alkene?

A

Bromine water
Orange to colourless

26
Q

How to test for halogenalkanes?

A

Sodium hydroxide
Nitric acid/ silver nitrate

Cl - white
Br - cream
I - yellow

27
Q

How to test for primary and secondary alcohols?

A

Warm dichromate - orange
PCl5 - white fumes
Carboxylic acid + sulphuric acid - sweet smell (ester)

28
Q

How to test for aldehydes?

A

Tollens - silver
Fehlings - blue to red
Dichromate - orange to green

29
Q

How to test for carboxylic acids?

A

Carbonate - fizzing
Limewater - clear to cloudy

30
Q

How to test for phenol?

A

Iron (III) chloride solution - clear to purple

31
Q

What are the soluable compounds?

A

NAG SAG
Nitrates (NO3)
Acetates (C2H3O2)
Group 1 (Li+, Na+ ect)
Sulfates (SO42)
Ammonium (NH4+)
Group 7 (F-,Cl- ect)

32
Q

What are the exceptions to soluable compounds?

A

PMS and Castro Bear
P (pb2+, lead)
M (mercury, Hg2+)
S (silver, ag+)

Ca2+
Sr2+
Ba 2+

33
Q
A

A2 Chemistry (7 decks)

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