{"id":3066,"date":"2024-11-11T15:40:10","date_gmt":"2024-11-11T14:40:10","guid":{"rendered":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/?p=3066"},"modified":"2026-02-26T23:55:06","modified_gmt":"2026-02-26T22:55:06","slug":"taller-experimentacio-4-pedres-que-floten","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/portada\/taller-experimentacio-4-pedres-que-floten\/","title":{"rendered":"Taller experimentaci\u00f3 4: Pedres que floten !!!"},"content":{"rendered":"

Expliquem com ho hem fem?<\/p>\n

    \n
  1. Primera part:<\/strong>\n
      \n
    • Omplim el pot d’esp\u00e8cies amb pedres.<\/li>\n
    • Posem el pot dintre d’un recipient de vidre ple d\u2019aigua.<\/li>\n
    • Observem que el pot s\u2019enfonsa. Aix\u00f2 passa a causa de la seva densitat, que \u00e9s m\u00e9s gran que la de l\u2019aigua.<\/li>\n<\/ul>\n<\/li>\n
    • Segona part:<\/strong>\n
        \n
      • Afegim aproximadament 50 ml de vinagre dintre del pot amb pedres.<\/li>\n
      • Amb l\u2019ajuda d\u2019un embut i una cullera, posem dues cullerades de bicarbonat de sodi dins d\u2019un globus.<\/li>\n
      • Col\u00b7loquem el globus a l\u2019obertura del pot, de manera que substitueixi la tapa.<\/li>\n
      • Introdu\u00efm el pot amb el globus al recipient amb aigua.<\/li>\n
      • En entrar en contacte el bicarbonat de sodi amb el vinagre, s\u2019inicia una reacci\u00f3 qu\u00edmica que allibera di\u00f2xid de carboni (CO2).<\/li>\n
      • L\u2019alliberament de CO2 infla el globus i redueix la densitat total del sistema (pot + pedres + aire), fent que el pot comenci a pujar fins que sura.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

        Qu\u00e8 aprenem?<\/strong><\/p>\n

        Aprenem que la densitat d\u2019un objecte determina si flota o s\u2019enfonsa en l\u2019aigua. Si la densitat total \u00e9s superior a la de l\u2019aigua, l\u2019objecte s\u2019enfonsa. Si \u00e9s inferior, l\u2019objecte sura. \u00a0La reacci\u00f3 entre el bicarbonat de sodi (base) i el vinagre (\u00e0cid) genera di\u00f2xid de carboni (CO2), aigua i un compost anomenat acetat de sodi.<\/p>\n

        Aquest experiment ens ajuda a comprendre conceptes fonamentals de la qu\u00edmica i la f\u00edsica, com la densitat, la flotabilitat i les reaccions qu\u00edmiques \u00e0cid-base, d\u2019una manera divertida i visual.<\/p>\n

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

        Expliquem com ho hem fem? Primera part: Omplim el pot d’esp\u00e8cies amb pedres. Posem el pot dintre d’un recipient de vidre ple d\u2019aigua. Observem que el pot s\u2019enfonsa. Aix\u00f2 passa a causa de la seva densitat, que \u00e9s m\u00e9s gran que la de l\u2019aigua. Segona part: Afegim aproximadament 50 ml de vinagre dintre del pot […]<\/p>\n","protected":false},"author":4,"featured_media":3689,"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":[70,164,4,163],"tags":[177],"class_list":["post-3066","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-experimentacio","category-experimentacio-tallers","category-portada","category-primaria-2","tag-experiments24-25"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/posts\/3066","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/comments?post=3066"}],"version-history":[{"count":2,"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/posts\/3066\/revisions"}],"predecessor-version":[{"id":3690,"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/posts\/3066\/revisions\/3690"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/media\/3689"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/media?parent=3066"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/categories?post=3066"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/wp-json\/wp\/v2\/tags?post=3066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}