{"id":4440,"date":"2021-01-21T17:36:23","date_gmt":"2021-01-21T16:36:23","guid":{"rendered":"http:\/\/agora.xtec.cat\/ceip-marti-poch\/?p=4440"},"modified":"2021-01-22T12:15:56","modified_gmt":"2021-01-22T11:15:56","slug":"la-neu-i-la-sal","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/portada\/la-neu-i-la-sal\/","title":{"rendered":"LA NEU I LA SAL"},"content":{"rendered":"

Aquest comen\u00e7ament de trimestre els alumnes de segon vam aprofitar que ten\u00edem la neu a la terrassa de l\u00b4escola per a fer un petit experiment.<\/p>\n

Vam posar neu en un got i despr\u00e9s de fer unes quantes hip\u00f2tesis sobre la temperatura que devia tenir vam poder comprovar amb un term\u00f2metre com l\u00b4aigua se solidifica a 0\u00baC.<\/p>\n

Despr\u00e9s vam parlar sobre el fet de llen\u00e7ar sal a les voreres per desfer la neu i vam pensar qu\u00e8 passaria amb la temperatura si pos\u00e0vem sal dins el got on hi havia la neu.<\/p>\n

Vam veure que no la desfeia gaire. Vam pensar que segurament ara la temperatura seria m\u00e9s alta. Un nen va dir que hi havia posat el dit i li semblava que estava m\u00e9s freda que abans quan nom\u00e9s hi havia la neu. I quina sorpresa! S\u00ed! Quan hi vam posar de nou el term\u00f2metre vam veure com la temperatura baixava fins a \u2013 10\u00baC o fins a -20\u00baC.<\/p>\n

Quan l\u00b4aigua o la neu es barreja amb la sal, canvia la temperatura que ha de tenir la barreja per passar a s\u00f2lida i aquesta temperatura \u00e9s molt m\u00e9s baixa que 0\u00baC, no pas m\u00e9s alta. \u00c9s a dir, ha de fer encara molt m\u00e9s fred a l\u00b4ambient perqu\u00e8 en el lloc on han tirat sal l\u00b4aigua o la neu que hi caigui s\u00b4arribi a gelar.<\/p>\n

I aix\u00f2 \u00e9s molt important per evitar relliscades perilloses.<\/p>\n

I en aquest temps que estem tamb\u00e9 cal que no donar m\u00e9s feina als metges.<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Aquest comen\u00e7ament de trimestre els alumnes de segon vam aprofitar que ten\u00edem la neu a la terrassa de l\u00b4escola per a fer un petit experiment.
\nVam posar neu en un got i despr\u00e9s de fer unes quantes hip\u00f2tesis sobre la temperatura que devia tenir vam poder… Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":4441,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[11,60,150,4,5,137],"tags":[],"class_list":["post-4440","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-2n","category-escoles-verdes","category-natura","category-portada","category-primaria","category-tallers"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/posts\/4440","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/comments?post=4440"}],"version-history":[{"count":1,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/posts\/4440\/revisions"}],"predecessor-version":[{"id":4443,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/posts\/4440\/revisions\/4443"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/media\/4441"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/media?parent=4440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/categories?post=4440"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/tags?post=4440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}