{"id":12464,"date":"2020-06-04T10:25:10","date_gmt":"2020-06-04T08:25:10","guid":{"rendered":"https:\/\/agora.xtec.cat\/ieribesdefreser\/?p=12464"},"modified":"2020-06-04T10:28:12","modified_gmt":"2020-06-04T08:28:12","slug":"experiments-casolans-4","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ieribesdefreser\/general\/experiments-casolans-4\/","title":{"rendered":"Experiments casolans 4"},"content":{"rendered":"<p>Avui us ensenyarem 4 videos m\u00e9s dels experiments i treballs pr\u00e0ctics que han fet els alumnes de cinqu\u00e8 durant el confinament.<\/p>\n<p>En primer lloc tenim a l&#8217;Agustina que ha convertit un ou fr\u00e0gil i trencad\u00eds en un ou flexible i resistent. Aix\u00f2 \u00e9s possible perqu\u00e8 la closca de l&#8217;ou est\u00e0 formada per una subst\u00e0ncia que es diu carbonat de calci.\u00a0 Aquesta subst\u00e0ncia quan la poses en contacte durant 2 o 3 dies amb un \u00e0cid (com el \u00e0.ac\u00e8tic que t\u00e9 el vinagre) reacciona qu\u00edmicament, la reacci\u00f3 \u00e9s de corrosi\u00f3, i com en tota reacci\u00f3 qu\u00edmica , les subst\u00e0ncies inicials (closca dura de l&#8217;ou i vinagre) desapareixen i es transformen en subst\u00e0ncies noves ( capa tova i el\u00e0stica de l&#8217;ou i altres subst\u00e0ncies) .\u00a0 Aquest ou transformat bota, si ho proveu\u00a0 us divertireu.<\/p>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Agusina Ous de goma\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/5TfGvqV7uvM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>En Jan ens mostra un altre experiment molt interessant sobre una tinta invisible.\u00a0 El que el Jan en realitat ha fet \u00e9s una altra reacci\u00f3 qu\u00edmica, reacci\u00f3 d&#8217;oxidaci\u00f3, perqu\u00e8\u00a0 el suc de llimona en contacte amb la calor s&#8217;oxida ( degut a la calor es descompon en diferents subst\u00e0ncies i una d&#8217;elles \u00e9s el carb\u00f3 de color marr\u00f3). i quan s&#8217;oxida les lletres invisibles escrites amb el suc transparent es tornen visibles, de color marr\u00f3.\u00a0 Un experiment\u00a0 que serveix per enviar missatges secrets !<\/p>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Jan Tinta invisible\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/dG34tFXyxQw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>En Pau amb una espelma i una mica d&#8217;aigua ens explica els efectes de la pressi\u00f3 atmosf\u00e8rica. Quan enc\u00e9n l&#8217;espelma la flama est\u00e0 consumint l&#8217;oxigen ( necessari per produir la reacci\u00f3 que mant\u00e9 el foc enc\u00e8s), quan l&#8217;ox\u00edgen s&#8217;esgota la flama s&#8217;apaga i l&#8217;aigua puja de nivell.\u00a0 Quan s&#8217;apaga l&#8217;espelma hi ha un canvi brusc de temperatura de calent a fred dins del got i l&#8217;aire es contrau, i per tant la pressi\u00f3 atmosf\u00e8rica de dins del got \u00e9s menor que la de fora. Per aix\u00f2 la pressi\u00f3 de l&#8217;aire de fora el vas<span style=\"font-family: inherit; font-size: 1em;\">, m\u00e9s\u00a0 gran,\u00a0 \u00a0empeny l&#8217;aigua de fora a dins del vas on hi ha menor pressi\u00f3. Sembla m\u00e0gia no?<\/span><\/p>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Pau P la pressi\u00f3 atmosf\u00e8rica\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/xHbBJbt7apU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>I per \u00faltim, tenim el treball pr\u00e0ctic que ha fet la Violeta. Ha aconseguit que una grua de Mecano funcion\u00e9s, com? Doncs afegint un motor i muntant cada pe\u00e7a ben muntada. \u00c9s un motor el\u00e8ctric que transforma l&#8217;energia el\u00e8ctrica en moviment.<\/p>\n<p><a href=\"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-content\/uploads\/usu353\/2020\/06\/Violeta-grua-reduida.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-12465\" src=\"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-content\/uploads\/usu353\/2020\/06\/Violeta-grua-reduida.jpg\" alt=\"\" width=\"640\" height=\"480\" srcset=\"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-content\/uploads\/usu353\/2020\/06\/Violeta-grua-reduida.jpg 640w, https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-content\/uploads\/usu353\/2020\/06\/Violeta-grua-reduida-300x225.jpg 300w, https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-content\/uploads\/usu353\/2020\/06\/Violeta-grua-reduida-200x150.jpg 200w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Avui us ensenyarem 4 videos m\u00e9s dels experiments i treballs pr\u00e0ctics que han fet els alumnes de cinqu\u00e8 durant el confinament. En primer lloc tenim a l&#8217;Agustina que ha convertit un ou fr\u00e0gil i trencad\u00eds en un ou flexible i resistent. Aix\u00f2 \u00e9s possible perqu\u00e8 la closca de l&#8217;ou est\u00e0 formada per una subst\u00e0ncia que [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":12467,"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":[14,29,120,1,4,5],"tags":[],"class_list":["post-12464","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-5e","category-activitats","category-ciencies","category-general","category-portada","category-primaria"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/posts\/12464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/comments?post=12464"}],"version-history":[{"count":2,"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/posts\/12464\/revisions"}],"predecessor-version":[{"id":12468,"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/posts\/12464\/revisions\/12468"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/media\/12467"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/media?parent=12464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/categories?post=12464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieribesdefreser\/wp-json\/wp\/v2\/tags?post=12464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}