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KEMIJA TOPOL

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by

gasper jamnik

on 3 June 2013

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Transcript of KEMIJA TOPOL

1. poskus dokaz monosaharidov 3. poskus dokaz škroba 2. poskus dokaz maščob KEMIJA kemijska delavnica
nadarjenih jodovica je reagent, ki je rumenorjave barve.če je v vzorcu prisoten škrob, se bo po končanem poskusu raztopina obarvala modro vijolično. da preverimo, če je v živilu prisotna maščoba živilo stremo na filtrirnem papirju. če je maščoba prisotna se na filtrirnem papirju pokaže masten madež. v tem poskusu smo dokazali monosaharide s pomočjo fehlingovega reagenta ki je temno modre barve. dodali smo ga medu, glukozi, saharozi, fruktozi in škrobu. s temi vzorci ogljikovih hidratov smo napolnili epice, ki so bile do polovice napoljnene z vodo. tem zmesem smo dodali fehlingov reagent. če je v vzorcu prisoten monosaharid, se bo vzorec po končanem poskusu obarval rjavordeče hvala za pozornost
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