Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

GCSE Chemistry (Edexcel) > Topic 9a- Chemical analysis / tests for ions > Flashcards

Topic 9a- Chemical analysis / tests for ions Flashcards

You may prefer our related Brainscape-certified flashcards:
GCSE Geography - AQA flashcards AP® Chemistry flashcards GCSE Religious Studies - Edexcel Route B flashcards GCSE Religious Studies - Eduqas Route A flashcards GCSE Religious Studies - Edexcel Route A flashcards GCSE Religious Studies - Eduqas Route B flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q

Flame test: Lithium

A

Red

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Flame test: Sodium

A

Orange/Yellow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Flame test: Potassium

A

Lilac

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Flame test: Calcium

A

Brick red/orange

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Flame test: Barium(?)

(not on spec)

A

apple green

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Why is only a small amount of NaOH is used?

A

So the metal hydroxide precipitates
In excess NaOH some of the precipitates may dissolve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Flame test: Copper

A

green/blue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is used to test for cations?

A

NaOH (sodium hydroxide)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Sodium hydroxide test: copper

A

Light blue precipitate, remains in excess (insoluble)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Sodium hydroxide test: Ammonium ions (NH4 (+))

A

No precipitate, gentle heating produces ammonia gas that can be tested for with red litmus paper, turning blue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Sodium hydroxide test: Calcium

A

White precipitate, remain in excess (insoluble)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Sodium hydroxide test: Aluminium

A

White precipitate, dissolve in excess

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Sodium hydroxide test: Iron(II)

A

Green precipitate, remains in excess (insoluble)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Sodium hydroxide test: Iron(III)

A

Red-brown precipitate, remains in excess (insoluble)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Test for carbonate ions

A

Add dilute acid, effervescance seen, CO2 produced, lime water test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

test for sulfate ion

A

Add dilute HCl and aqueous barium chloride, white precipitate of barium sulfate formed

11
Q

How to test for halide ions?

A

Add dilute nitric acid (HNO3) then add silver nitrate solution (AgNO3), forms silver halide precipitate forms

12
Q

What colour is silver chloride?

A

White

13
Q

What colour is silver bromide?

A

Cream

14
Q

What colour is silver iodide?

A

Yellow

GCSE Chemistry (Edexcel) (26 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions