Brainscape's Knowledge GenomeTM

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


See full index

Chemistry Paper 2 Separate > 8 Analysis Separate > Flashcards

8 Analysis Separate Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

What is a flame test?

A

A test to identify metal ions (cations)

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

What is the colour of the flame produced from a lithium containing compound?

A

Crimson

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

What is the colour of the flame produced from a copper containing compound?

A

Green

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

What is the colour of the flame produced from a sodium containing compound?

A

Yellow

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

What is the colour of the flame produced from a potassium containing compound?

A

lilac

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

What is the colour of the flame produced from a calcium containing compound?

A

Orange-red

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

Other than flame tests, how can metal ions be identified?

A

Use of sodium hydroxide

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

Which solutions produce white precipitates on addition of sodium hydroxide?

A

Solutions containing aluminium, magnesium, calcium ions

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

How can a solution of aluminium ions be distinguished from calcium and magnesium ones?

A

Its precipitate will dissolve in excess sodium hydroxide

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

What is the colour of the precipitate formed from the addition of sodium hydroxide to a solution containing copper (II) ions?

A

Blue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the colour of the precipitate formed from the addition of sodium hydroxide to a solution containing iron(II) ions?

A

Green

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the colour of the precipitate formed from the addition of sodium hydroxide to a solution containing iron(III) ions?

A

Brown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the test for carbonates?

A

Add an acid to generate carbon dioxide gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the test for halides?

A

Add silver nitrate and nitric acid to generate a solid silver halide precipitate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the colours of the silver halides?

A

Silver chloride white, silver bromide cream, silver iodide yellow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the test for sulfate ions?

A

Add barium chloride and hydrochloric acid, forms white precipitate

17
Q

What is an instrumental method?

A

Use of scientific technology to perform chemical analysis

18
Q

What are the three advantages of instrumental methods?

A

They are accurate (gives correct results), sensitive (only needs a small sample to work), rapid (a lot faster than other tests)

19
Q

What is flame emission spectroscopy?

A

An instrumental analysis tool for identifying metal ions

20
Q

How is flame emissions spectroscopy carried out?

A

Sample placed in a flame, light emitted is passed through a spectroscope to give a spectrum which can be compared to a reference

Chemistry Paper 2 Separate (12 decks)

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