https://padlet.com/ccasu13/8pe04vzuttwz BIOLOGIA en-us 2019-02-16 17:20:47 UTC 2025-12-04 14:31:46 UTC hello@padlet.com ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332022997 -portaprovette
-tre provette
-guanti
-pipetta]]> 2019-02-16 18:06:46 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332022997 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332023159 -amido
-zucchero da tavola
-soluzione di Lugol]]> 2019-02-16 18:08:27 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332023159 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332023377 Ricerca dell'amido in alcuni alimenti]]> 2019-02-16 18:10:24 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332023377 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332023615 L'amido è un polisaccaride (zucchero complesso) costituito da molte molecole di glucosio. è un polisaccaride di riserva delle piante che lo accumulano nei semi o nei tuberi come le patate]]> 2019-02-16 18:12:05 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332023615 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332024643 Abbiamo riempito le tre provette :
-nella prima è presente solo acqua
-nella seconda zucchero da tavola(saccarosio) mescolato ad acqua
-nella terza è contenuta un po' di farina mischiata con acqua]]> 2019-02-16 18:21:06 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332024643 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332025053 In ciascuna delle provette abbiamo aggiunto alcune gocce di iodo iodurata, una soluzione acquosa che si ricava sciogliendo ioduro di potassio in acqua e aggiungendo iodio cristallino, soluzione di Lugol]]> 2019-02-16 18:25:46 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332025053 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332025787 -la provetta che conteneva solo acqua assume un colore rosso-arancio che è comune alla soluzione iodo iodurata


]]> 2019-02-16 18:33:45 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332025787 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332026644 -anche quella acqua e zucchero presenta la stessa colorazione, perchè lo zucchero non contiene amido

]]> 2019-02-16 18:42:28 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332026644 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332026670 - quella contenente acqua e farina invece risulta essere marrone-nero= formazione complesso soluzione iodio iodurata e amido. Lo iodio resta racchiuso tra le catene dell'amido e assorbe luce producendo la colorazione più scura]]> 2019-02-16 18:42:40 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332026670 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332029272 2019-02-16 19:06:52 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332029272 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332031187 2019-02-16 19:24:53 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332031187 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332031341 2019-02-16 19:26:34 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332031341 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332031472 2019-02-16 19:28:02 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332031472 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332031775 2019-02-16 19:30:57 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332031775 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332033948 2019-02-16 19:53:40 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332033948 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034144 2019-02-16 19:55:15 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034144 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034269 2019-02-16 19:56:29 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034269 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034387 2019-02-16 19:57:38 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034387 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034496 2019-02-16 19:58:50 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034496 ccasu13 https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034751 2019-02-16 20:01:53 UTC https://padlet.com/ccasu13/8pe04vzuttwz/wish/332034751