CLEAPSS Supporting practical science and technology
CLEAPSS Resources
Latest Resources
Search For:
Showing results 1 to 10 of 29
1 23

Members only resource Click to download Document.
Although both aldehydes and ketones contain the carbonyl functional group (-C=O), only aldehydes give a positive test (formation of an orange to brick-red precipitate of copper(I) oxide) with Fehling’.. more
words matched: aldehyde

Members only resource Click to download Document.
Although both aldehydes and ketones contain the carbonyl functional group (-C=O), only aldehydes (or reducing sugars) give a positive ‘silver mirror’ test result with Tollen’s reagent. This small-scal.. more
words matched: aldehyde

Free resource Click to download Document.
Using a number of aldehydes safely in practical work. Includes ethanal (acetaldehyde), ethanal tetramer (metaldehyde),  propanal (proprionaldehyde) and butanal (butyraldehyde).
words matched: aldehyde

Members only resource Click to download Document.
In this activity, a primary alcohol (ethanol) is oxidised to an aldehyde (ethanal) using an acidified dichromate(VI) solution. After collection by distillation, the organic product can be tested to co.. more
words matched: aldehyde

Members only resource Click to download Document.
Guidance on the preparation (and use) of Fehling's solutions A and B.
words matched: aldehyde

Members only resource Click to download Document.
Risk assessment guidance for propanal, butanal and benzaldehyde.
words matched: aldehyde

Members only resource Click to download Document.
Guidance on the preparation of Sandell's solution. This reagent may be used to test for aldehydes and is a safer alternative to Fehling's for testing for reducing sugars.
words matched: aldehyde

Members only resource Click to download Document.
Guidance on the preparation of potassium dichromate(VI) and sodium dichromate(VI) solutions.
words matched: aldehyde

Members only resource Click to download Document.
Brief risk assessment guidance and experimental notes for a range of practical activities involving silver nitrate(V) and its solutions (Hazcard 87).
words matched: aldehyde

Members only resource Click to download Document.
Guidance for the preparation of Brady's test reagent from 2,4-dinitrophenylhydrazine.
words matched: aldehyde

Showing results 1 to 10 of 29
1 23