{"id":8233,"date":"2020-11-13T10:13:11","date_gmt":"2020-11-13T09:13:11","guid":{"rendered":"http:\/\/agora.xtec.cat\/zergavarresa\/?p=8233"},"modified":"2021-01-13T21:17:23","modified_gmt":"2021-01-13T20:17:23","slug":"experimentem-amb-la-tensio-superficial","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/zergavarresa\/escola-els-roures\/grups-els-roures\/cicle-superior-els-roures\/experimentem-amb-la-tensio-superficial\/","title":{"rendered":"Experimentem amb la tensi\u00f3 superficial."},"content":{"rendered":"<p><strong>Qu\u00e8 passar\u00e0 amb la llet, colorant i sab\u00f3?<\/strong><\/p>\n<p>Els alumnes han experimentat amb aquest 3 ingredients i han observat com reaccionaven, s&#8217;han adonat que quan pos\u00e0vem el sab\u00f3, aquest feia que el colorant reaccion\u00e9s i es separ\u00e9s fent magn\u00edfiques obres d&#8217;art.<\/p>\n<p><strong>Quina ci\u00e8ncia hi ha darrera de l\u2019experiment?<\/strong> El colorants no es dissolen r\u00e0pidament perqu\u00e8 a la llet no nom\u00e9s hi ha aigua, si b\u00e9 n\u2019\u00e9s un dels components principals. L\u2019exist\u00e8ncia de greixos fa que els colorants quedin concentrats.<\/p>\n<p><strong>Per qu\u00e8 s\u2019allunyen els colors r\u00e0pidament quan toquem la llet amb el sab\u00f3?<\/strong> Perqu\u00e8 per una banda, estem trencant la tensi\u00f3 superficial de l\u2019aigua. La tensi\u00f3 superficial \u00e9s una propietat de l\u2019aigua que fa que la capa de la superf\u00edcie es comporti com una \u201cpell\u201d ja que les mol\u00e8cules de l\u2019aigua s\u2019atrauen entre elles i exerceixen una tensi\u00f3. Aquesta tensi\u00f3 superficial facilita que hi hagi insectes, com el sabater, que es puguin despla\u00e7ar per la superf\u00edcie de l\u2019aigua sense enfonsar-se.<\/p>\n<p>Quines ganes de fer m\u00e9s experiments!<\/p>\n<p><a href=\"https:\/\/photos.app.goo.gl\/75veNSGQK5KCfHuC8\">Trobareu les fotos aqu\u00ed<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Qu\u00e8 passar\u00e0 amb la llet, colorant i sab\u00f3? Els alumnes han experimentat amb aquest 3 ingredients i han observat com reaccionaven, s&#8217;han adonat que quan pos\u00e0vem el sab\u00f3, aquest feia que el colorant reaccion\u00e9s i es separ\u00e9s fent magn\u00edfiques obres d&#8217;art. Quina ci\u00e8ncia hi ha darrera de l\u2019experiment? El colorants no es dissolen r\u00e0pidament perqu\u00e8 [&hellip;]<\/p>\n","protected":false},"author":45,"featured_media":8234,"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,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[99,103],"tags":[106,198,322],"class_list":["post-8233","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cicle-superior-els-roures","category-escola-els-roures","tag-cicle-superior","tag-escola-els-roures","tag-experimentacio"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/posts\/8233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/users\/45"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/comments?post=8233"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/posts\/8233\/revisions"}],"predecessor-version":[{"id":8527,"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/posts\/8233\/revisions\/8527"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/media\/8234"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/media?parent=8233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/categories?post=8233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/zergavarresa\/wp-json\/wp\/v2\/tags?post=8233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}