WorksheetsC8 Further Chemical Analysis - Triple
Total questions: 20
Worksheet time: 10mins
What is a flame test?
A test to identify metal ions (cations)
An instrumental analysis tool for identifying metal ions
A process to separate the constituents of a mixture
The process of establishing what anions are present in a substance
What is the colour of the flame produced from a lithium containing compound?
Crimson
Green
Yellow
Lilac
What is the colour of the flame produced from a copper containing compound?
Crimson
Green
Yellow
Lilac
What is the colour of the flame produced from a sodium containing compound?
Crimson
Green
Yellow
Lilac
What is the colour of the flame produced from a potassium containing compound?
Crimson
Green
Yellow
Lilac
What is the colour of the flame produced from a calcium containing compound?
Red
Green
Yellow
Lilac
Other than flame tests, how can metal ions be identified?
Use of sodium hydroxide
Add an acid to generate carbon dioxide gas
Add silver nitrate and nitric acid to generate a solid silver halide precipitate
Add barium chloride and hydrochloric acid, forms white precipitate
What is the test for carbonates?
Use of sodium hydroxide
Add an acid to generate carbon dioxide gas
Add silver nitrate and nitric acid to generate a solid silver halide precipitate
Add barium chloride and hydrochloric acid, forms white precipitate
What is the test for halides?
Use of sodium hydroxide
Add an acid to generate carbon dioxide gas
Add silver nitrate and nitric acid to generate a solid silver halide precipitate
Add barium chloride and hydrochloric acid, forms white precipitate
What is the test for sulfate ions?
Use of sodium hydroxide
Add an acid to generate carbon dioxide gas
Add silver nitrate and nitric acid to generate a solid silver halide precipitate
Add barium chloride and hydrochloric acid, forms white precipitate
Which solutions produce white precipitates on addition of sodium hydroxide?
Solutions containing aluminium, magnesium, calcium ions
Solutions containing aluminium, iron, copper ions
Solutions containing copper, magnesium, calcium ions
Solutions containing iron (ii), iron (iii), calcium ions
How can a solution of aluminium ions be distinguished from calcium and magnesium ones?
Its precipitate will dissolve in excess sodium hydroxide
It forms a blue precipitate in excess sodium hydroxide
It forms a green precipitate in excess sodium hydroxide
It forms a orange precipitate in excess sodium hydroxide
What is the colour of the precipitate formed from the addition of sodium hydroxide to a solution containing copper (II) ions?
Blue
Green
Brown
White
What is the colour of the precipitate formed from the addition of sodium hydroxide to a solution containing iron(II) ions?
Blue
Green
Brown
White
What is the colour of the precipitate formed from the addition of sodium hydroxide to a solution containing iron(III) ions?
Blue
Green
Brown
White
What are the colours of the silver halides?
chloride = white, bromide = cream, iodide = yellow
chloride = red, bromide = yellow, iodide = blue
chloride = green, bromide = brown, iodide = purple
chloride = white, bromide = white, iodide = white
What is an instrumental method?
The process of establishing what chemicals are present in a substance
A process that has had nothing added to it and is in its "natural" state
An instrumental analysis tool for identifying metal ions
Use of scientific technology to perform chemical analysis
Which is NOT an advantage of instrumental methods?
They are accurate (gives correct results)
They are sensitive (only needs a small sample to work)
They are rapid (a lot faster than other tests)
They are complex (need a skilled worker to operate them)
What is flame emission spectroscopy?
The process of establishing what chemicals are present in a substance
A process that has had nothing added to it and is in its "natural" state
An instrumental analysis tool for identifying metal ions
Use of scientific technology to perform chemical analysis
Which process does the following describe? 'Sample placed in a flame, light emitted is passed through a spectroscope to give a spectrum which can be compared to a reference'
Flame emission spectroscopy
Chromatography
Microscopy
Light spectroscopy
