WorksheetsOCR A Chemistry – 6.3.1 Functional Group Tests
Total questions: 12
Worksheet time: 10mins
Bromine water is used as a test for which functional group?
(a)
In a positive test, Br2(aq) goes from orange to ...
(a)
TICK ALL THAT APPLY
the test for haloalkanes...
...only requires AgNO3(aq)
...always gives a white precipitate when positive
... is negative when no precipitate is seen
...requires a different solvent than water
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The test for a carbonyl involves...
...2,4-DNP
...a colour observation for a positive test
formation of precipitate for a positive test
The positive test for a carbonyl involves a(n) (a) precipitate
A silver mirror is formed to show a positive test for an...
(a)
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A silver mirror is formed when
ammoniacal silver nitrate reacts in a positive test
an oxidation of the metal has occured
an oxidation of an organic group has occurred
Tollen's reagent has been used in a negative test
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Secondary alcohols can be tested for...
...in the same way that primary alcohols can be tested
...with an orange to green colour change for a positive test
...with a green to orange colour change for a positive test
...in the same way that aldehydes can be tested
Write your answer in words (not formulae!)
What is used to test for secondary alcohols?
(a)
What can be used as a chemical test for carboxylic acid?
(a)
What is the positive observation in a chemical test for carboxylic acid?
(a)
TICK ALL THAT APPLY
Testing for phenol...
...can be done with the same reagent as the test for alkenes
...can involve a precipitate as a positive test
...can be done with the same reagent as the test for carboxylic acid
...can be done using pH tests, and the pH > 7
