CLEAPSS Supporting practical science and technology
Search Science site:     
Log InHelplineSite FeedbackCLEAPSS Home Page
Science HomeBulletinsCoursesEquipmentAll EquipmentBuy It GuidesMake It GuidesGuidesHazCardsLaboratory HandbookJoin CLEAPSSMembership DocumentsMailing ListPractical ProceduresAll ProceduresBiologyChemistryPhysicsRecipe SheetsStudent Safety SheetsSubject AreasAll SubjectsBiologyChemistryPhysicsSupplementary RAsTeaching ResourcesTechniciansTechnicians HomeJob AdvertsTechnicians NetworksBuy It GuidesMake It GuidesTechnician TipsUseful LinksWhat's NewVideos
CLEAPSS Resources
Latest Resources
Search For:
Showing results 1 to 10 of 84
1 234►
Free resource
SSS070 - Dyes and indicators
Click to download Document.
Using common dyes and indicators safely in practical activities. Many such compounds , or their solvents, are hazardous but are used in such small amounts and in a very controlled way so as to limit e.. more
words matched: orange
Members only resource
PP011 - Testing for carbonyl compounds with Fehling's solution
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: orange
Members only resource
TL004 - Extracting limonene
Click to download Document.
The chemistry of extracting substances from plant materials is important because many such compounds are physically active, either medically or aesthetically (perfumes). This guide describe a small-s.. more
words matched: orange
Members only resource
PP094 - Bromine clock reactions: disappearing pink
Click to download Document.
The kinetics of a reaction can be investigated by determining how the rate of the reaction varies with the concentration of the reactants. The 'disappearing pink' method provides an alternative to iod.. more
words matched: orange
Members only resource
PP099 – Testing for positive ions: non-transition metals
Click to download Document.
The positive ions aluminium (Al3+), potassium (K+), lead(II) (Pb2+) and ammonia (NH4+) can be tested for with simple test tube reactions. These tests are more specific than precipitation reactions wit.. more
words matched: orange
Members only resource
PP057 - Making a Universal Indicator- A Microscale Approach
Click to download Document.
This activity can be used as an introduction to microscale drop, or “puddle” chemistry. It demonstrates that indicators do not always change at pH7.
words matched: orange
Members only resource
GL018 - Food tests
Click to download Document.
This document explains how to carry out a circus of qualitative food tests for:carbohydratesstarch – iodine testreducing sugars - Benedict’s testnon-reducing sugars – hydrolysis then Benedict’s test p.. more
words matched: orange
Members only resource
PP130 - Making azo dyes
Click to download Document.
Azo dyes provide an opportunity for students to carry out a simple multi-step organic synthesis. The methods provided here could be the basis for a student investigation into the effects of different .. more
words matched: orange
Members only resource
PP049 - Paper chromatography; the separation of pH indicators
Click to download Document.
It is becoming increasingly difficult to determine the composition of food dyes in an unknown mixture, because formulations have been altered over time, and, as a consequence, the results never match .. more
words matched: orange
Members only resource
HC032 - Dyes, indicators and stains
Click to download Document.
Risk assessment guidance for dyes, indicators and stains.
words matched: orange
Showing results 1 to 10 of 84
1 234►