{"id":3539,"date":"2025-10-20T13:17:46","date_gmt":"2025-10-20T11:17:46","guid":{"rendered":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/?p=3539"},"modified":"2026-02-26T23:56:46","modified_gmt":"2026-02-26T22:56:46","slug":"taller-dexperimentacio-fem-un-extintor-amb-el-co2","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/escoladelpoblenoudeldelta\/portada\/taller-dexperimentacio-fem-un-extintor-amb-el-co2\/","title":{"rendered":"Taller d’experimentaci\u00f3: Constru\u00efm un extintor amb el CO2."},"content":{"rendered":"

A l\u2019aula hem dut a terme un experiment molt sorprenent per descobrir com funciona una reacci\u00f3 qu\u00edmica i quin efecte t\u00e9 el gas que es genera.<\/p>\n

Per comen\u00e7ar, hem posat unes cullerades de vinagre dins d\u2019una ampolla i, a part, hem omplert un globus amb una mica de bicarbonat. Despr\u00e9s, amb molta cura, hem col\u00b7locat el globus a l\u2019ampolla sense que el bicarbonat caigu\u00e9s. Quan ho hem tingut tot preparat, hem aixecat el globus perqu\u00e8 el bicarbonat i el vinagre es barregessin. Ha comen\u00e7at a sortir molta escuma i el globus s\u2019ha anat inflant gr\u00e0cies al gas que es generava.<\/p>\n

Aquest gas \u00e9s di\u00f2xid de carboni (CO\u2082), que \u00e9s m\u00e9s pesant que l\u2019aire. Per comprovar-ho, hem enc\u00e8s unes espelmes i, amb el globus ja inflat, hem deixat sortir el gas a poc a poc sobre les flames. Sense necessitat de bufar, les espelmes s\u2019han anat apagant una per una!<\/p>\n

Qu\u00e8 hem apr\u00e8s?<\/strong><\/h3>\n

Quan el vinagre i el bicarbonat es barregen, es produeix una reacci\u00f3 qu\u00edmica que genera di\u00f2xid de carboni, un gas que pot inflar un globus. A m\u00e9s, com que pesa m\u00e9s que l\u2019aire, pot despla\u00e7ar l\u2019oxigen i apagar les flames. D\u2019aquesta manera hem pogut veure com funciona el CO\u2082 i com es comporta en una situaci\u00f3 real.<\/p>\n

Us deixem algunes fotos:<\/p>\n

\"\"<\/a><\/p>\n

\n","protected":false},"excerpt":{"rendered":"

A l\u2019aula hem dut a terme un experiment molt sorprenent per descobrir com funciona una reacci\u00f3 qu\u00edmica i quin efecte t\u00e9 el gas que es genera. Per comen\u00e7ar, hem posat unes cullerades de vinagre dins d\u2019una ampolla i, a part, hem omplert un globus amb una mica de bicarbonat. Despr\u00e9s, amb molta cura, hem col\u00b7locat […]<\/p>\n","protected":false},"author":4,"featured_media":3543,"comment_status":"open","ping_status":"open","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 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