{"id":4791,"date":"2017-03-14T18:42:50","date_gmt":"2017-03-14T17:42:50","guid":{"rendered":"http:\/\/agora.xtec.cat\/ceipsesmondolo\/?p=4791"},"modified":"2017-03-14T18:42:50","modified_gmt":"2017-03-14T17:42:50","slug":"hem-fet-neu","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ceipsesmondolo\/ei\/hem-fet-neu\/","title":{"rendered":"HEM FET NEU!!!!"},"content":{"rendered":"

Hem fet neu!!! Amb l\u2019ajuda d\u2019uns quants bolquers i aigua hem fet un trosset de Pol Nord.<\/p>\n

Primer hem obert els bolquers i hem tret de dins una mena de pols blanca. (Els bolquers porten un component que els fan molt absorbents: poliacrilat de sodi. El policrilat \u00e9s un pol\u00edmer amb una gran capacitat d’ absorci\u00f3. Immediatament al contacte amb l’ aigua canvia d’estat i pren una textura molt semblant a la neu.)<\/p>\n

Despr\u00e9s de treure la pols hi hem afegit aigua i el seu volum ha augmentat considerablement. Quan l\u2019hem tocat la seva textura era semblant a la de la neu, com una mena de gel fred.<\/p>\n\r\n\t

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