{"id":7958,"date":"2024-01-08T15:23:23","date_gmt":"2024-01-08T14:23:23","guid":{"rendered":"https:\/\/www.hdebalzac.fr\/?p=7958"},"modified":"2024-01-24T15:23:43","modified_gmt":"2024-01-24T14:23:43","slug":"purifier-electrifier-et-modeliser-les-laborantins-de-2nde-pro-laboratoire-controle-qualite-en-action","status":"publish","type":"post","link":"https:\/\/www.hdebalzac.fr\/index.php\/2024\/01\/08\/purifier-electrifier-et-modeliser-les-laborantins-de-2nde-pro-laboratoire-controle-qualite-en-action\/","title":{"rendered":"Purifier, \u00e9lectrifier et mod\u00e9liser : les laborantins de 2nde Pro Laboratoire Contr\u00f4le Qualit\u00e9 en action !"},"content":{"rendered":"\n<p class=\"has-medium-font-size\">Dans le laboratoire, les \u00e9l\u00e8ves de seconde professionnelle LCQ d\u00e9couvrent comment rendre l&rsquo;eau propre par des traitements physiques. Ils explorent \u00e9galement comment l&rsquo;\u00e9lectricit\u00e9 peut d\u00e9composer des solutions, tout en apprenant sur les mol\u00e9cules simples qui composent notre quotidien. Une immersion pratique dans la chimie.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Purification de l&rsquo;eau par <strong>traitements physiques.<\/strong><\/h1>\n\n\n\n<p>Les laborantins utilisent des traitements physiques tels que la d\u00e9cantation, la filtration, l&rsquo;\u00e9bullition et la distillation pour clarifier et purifier les eaux troubles lors des travaux pratiques de chimie. <\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 1440 \/ 1440;\" width=\"1440\" controls src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/11\/L0-TP-Traitements-physiques.mp4\"><\/video><figcaption class=\"wp-element-caption\"><em>Les traitements physiques d&rsquo;une eau trouble. Production d&rsquo;eau distill\u00e9e.<\/em><\/figcaption><\/figure>\n\n\n\n<p>Ces traitements physiques permettent de s\u00e9parer les constituants du m\u00e9lange afin d&rsquo;am\u00e9liorer la qualit\u00e9 de l&rsquo;eau trait\u00e9e.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">R\u00e9actions \u00e9lectrochimiques en <strong>solutions.<\/strong><\/h1>\n\n\n\n<p>Ils explorent l&rsquo;\u00e9lectrolyse, r\u00e9v\u00e9lant la circulation d&rsquo;ions et d\u00e9composant des mol\u00e9cules par le passage du courant \u00e9lectrique dans les solutions.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 1440 \/ 1440;\" width=\"1440\" controls src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/11\/L0-TP-Electrolyse.mp4\"><\/video><figcaption class=\"wp-element-caption\"><em>D\u00e9composition \u00e9lectrochimique de solutions. Mise en \u00e9vidence du dihydrog\u00e8ne.<\/em><\/figcaption><\/figure>\n\n\n\n<p>L&rsquo;\u00e9lectrolyse d&rsquo;une solution sal\u00e9e (chlorure de sodium) produit des mol\u00e9cules gazeuses aux \u00e9lectrodes (dichlore \u00e0 l&rsquo;anode et dihydrog\u00e8ne \u00e0 la cathode) et une solution ionique de soude (hydroxyde de sodium) dans la cuve.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Focus sur les mol\u00e9cules.<\/h1>\n\n\n\n<p>Ils  \u00e9tudient l&rsquo;assemblage des quelques atomes (H, O, Cl, N, C) et d\u00e9couvrent la diversit\u00e9 des mol\u00e9cules rencontr\u00e9es dans la vie quotidienne ; le dioxyg\u00e8ne, le diazote, l&rsquo;eau, le dioxyde de carbone, &#8230; <\/p>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/11\/L0-TP-Molecules.mp4\"><\/video><figcaption class=\"wp-element-caption\"><em>Construction de quelques mol\u00e9cules et leurs mod\u00e8les<\/em>.<\/figcaption><\/figure>\n\n\n\n<p>Puis ils construisent les mod\u00e8les compacts et \u00e9clat\u00e9s afin de visualiser la forme singuli\u00e8re de ces mol\u00e9cules (coud\u00e9e pour l&rsquo;eau, align\u00e9e pour le dioxyde de carbone,&#8230;).<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Vers de nouvelles comp\u00e9tences<\/h1>\n\n\n\n<p>A travers ces exp\u00e9riences, les laborantins de seconde professionnelle ont manifest\u00e9 un vif int\u00e9r\u00eat pour la pratique, d\u00e9montrant non seulement leur enthousiasme mais aussi l&rsquo;\u00e9volution de leurs comp\u00e9tences grandissantes dans le domaine de la chimie.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans le laboratoire, les \u00e9l\u00e8ves de seconde professionnelle LCQ d\u00e9couvrent comment rendre l&rsquo;eau propre par des traitements physiques. Ils explorent \u00e9galement comment l&rsquo;\u00e9lectricit\u00e9 peut d\u00e9composer des solutions, tout en apprenant 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