{"id":5475,"date":"2019-10-24T10:29:36","date_gmt":"2019-10-24T08:29:36","guid":{"rendered":"http:\/\/agora.xtec.cat\/esc-elfar\/?p=5475"},"modified":"2019-10-24T10:29:36","modified_gmt":"2019-10-24T08:29:36","slug":"un-vegetal-com-indicador-del-ph","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/esc-elfar\/nivells\/un-vegetal-com-indicador-del-ph\/","title":{"rendered":"Un vegetal com indicador del PH"},"content":{"rendered":"

L’alumnat de cicle mitj\u00e0, a la darrera sessi\u00f3 de ci\u00e8ncia naturals, ha realitzat un experiment amb un vegetal, la col llombarda.<\/p>\n

En diferents recipients s’ha posat: vinagre, llet, aigua, detergent, aigua amb bicarbonat i suc de llimona. Tot seguit, cada alumne\/a amb una pipeta ha afegit suc d’haver bullit la col. Ha estat sorprenent veure com cada got ha aconseguit un color molt diferent.<\/p>\n

La col llombarda t\u00e9 una subst\u00e0ncia anomenada cianina, un antioxidant natural que reacciona segons es trobi amb un \u00e0cid o base. Per tant, aplicant-lo hem vist, instant\u00e0niament, modificacions de color. La llimona i el vinagre s\u00f3n \u00e0cids perqu\u00e8 han obtingut un color m\u00e9s vermell\u00f3s. L\u2019aigua i la llet s\u00f3n neutres, perqu\u00e8 no han reaccionat massa, nom\u00e9s han agafat la tonalitat de la col. I tant la dissoluci\u00f3 amb bicarbonat com el detergent, han obtingut un to blav\u00f3s, perqu\u00e8 s\u00f3n bases.<\/p>\n

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

L’alumnat de cicle mitj\u00e0, a la darrera sessi\u00f3 de ci\u00e8ncia naturals, ha realitzat un experiment amb un vegetal, la col llombarda.
\nEn diferents recipients s’ha posat: vinagre, llet, aigua, detergent, aigua amb bicarbonat i suc de llimona. Tot seguit, cada alumne\/a amb una pipeta ha afegit… Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":7,"featured_media":5476,"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":[1],"tags":[],"class_list":["post-5475","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nivells"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/posts\/5475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/comments?post=5475"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/posts\/5475\/revisions"}],"predecessor-version":[{"id":5483,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/posts\/5475\/revisions\/5483"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/media\/5476"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/media?parent=5475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/categories?post=5475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/tags?post=5475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}