{"id":8296,"date":"2024-03-10T17:49:22","date_gmt":"2024-03-10T16:49:22","guid":{"rendered":"https:\/\/www.hdebalzac.fr\/?p=8296"},"modified":"2024-03-10T17:49:22","modified_gmt":"2024-03-10T16:49:22","slug":"a-la-lumiere-des-ions","status":"publish","type":"post","link":"https:\/\/www.hdebalzac.fr\/index.php\/2024\/03\/10\/a-la-lumiere-des-ions\/","title":{"rendered":"\u00c0 la lumi\u00e8re des ions"},"content":{"rendered":"\n<p class=\"has-text-align-left wp-block-paragraph\" style=\"font-size:18px\">La chimie est une science qui nous r\u00e9v\u00e8le la nature de la mati\u00e8re. Mais comment analyser les \u00e9l\u00e9ments qui la composent ? C\u2019est le d\u00e9fi que les \u00e9l\u00e8ves de seconde professionnelle ABIL Laboratoire Contr\u00f4le Qualit\u00e9 ont relev\u00e9 en r\u00e9alisant des exp\u00e9riences passionnantes en chimie. Ils ont explor\u00e9 le monde des ions, des particules charg\u00e9es \u00e9lectriquement, en utilisant les couleurs qu\u2019ils produisent sous l\u2019effet de la lumi\u00e8re ou de r\u00e9actifs. Nous vous pr\u00e9sentons le travail des laborantins, qui ont su combiner savoir-faire, imagination et plaisir. Entrez avec nous dans la lumi\u00e8re des ions &#8230; \ud83c\udf1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Des flammes multicolores pour r\u00e9v\u00e9ler les ions<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Vous aimez les couleurs, les flammes et les myst\u00e8res ? Alors vous allez adorer &#8230; Les laborantins ont men\u00e9 une enqu\u00eate palpitante en chimie : ils ont d\u00e9couvert quels ions se cachaient dans des solutions incolores en utilisant les tests de flamme. Les tests de flamme sont une technique qui permet de faire appara\u00eetre la couleur propre \u00e0 chaque \u00e9l\u00e9ment chimique en le chauffant dans une flamme. C\u2019est comme un feu d\u2019artifice dans le laboratoire ! \ud83c\udf86\ud83c\udf86\ud83c\udf87 <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Les tests de flamme illuminent le laboratoire de couleurs vibrantes !<\/em><\/strong><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-vertically-aligned-top\"><figure class=\"wp-block-media-text__media\"><video controls src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/02\/L0-TP-Tests-flamme.mp4\"><\/video><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">Lors d&rsquo;un test de flamme, l&rsquo;ion pr\u00e9sent dans l&rsquo;\u00e9chantillon est excit\u00e9 par la chaleur. Cette excitation \u00e9lectronique provoque l&rsquo;\u00e9mission de lumi\u00e8re ce qui colore la flamme de mani\u00e8re caract\u00e9ristique pour chaque ion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les flammes r\u00e9v\u00e8lent la pr\u00e9sence des ions sodium, potassium, cuivre II et calcium, chacun \u00e9clatant dans le laboratoire avec des couleurs distinctes jaune, violette, verte ou rouge.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Des pr\u00e9cipit\u00e9s color\u00e9s pour identifier les ions<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Ensuite, ils ont r\u00e9alis\u00e9 des r\u00e9actions chimiques de pr\u00e9cipitation, c\u2019est-\u00e0-dire qu\u2019ils ont m\u00e9lang\u00e9 deux solutions et ont obtenu un solide insoluble. Ils ont utilis\u00e9 les couleurs caract\u00e9ristiques des diff\u00e9rents ions pour reconna\u00eetre les solides form\u00e9s. C\u2019est comme une palette de peinture dans le laboratoire ! \ud83c\udfa8\ud83c\udfa8\ud83d\udd8c\ufe0f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em><b style=\"font-style: italic\">Pr\u00e9cipitation : identifier les ions <\/b>par leur couleur distinctive ! <\/em><\/strong><\/p>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile is-vertically-aligned-top\"><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">Lorsque deux ions de charges oppos\u00e9es se rencontrent, ils s&rsquo;attirent et forment un pr\u00e9cipit\u00e9 solide insoluble dans la solution, de couleur caract\u00e9ristique ce qui permet de les identifier de mani\u00e8re distincte.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quand le r\u00e9actif hydroxyde de sodium est ajout\u00e9, il provoque la pr\u00e9cipitation des ions m\u00e9talliques cuivre II, zinc, fer II, fer III et aluminium car ceux-ci forment des hydroxydes m\u00e9talliques de couleur bleue, blanche, verte, rouille ou blanche dans la solution.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><video controls src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/02\/L0-TP-Tests-cations.mp4\"><\/video><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Des r\u00e9actifs pour d\u00e9tecter les ions dans l\u2019eau min\u00e9rale<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Pour v\u00e9rifier la pr\u00e9sence des ions dans une eau min\u00e9rale,  les laborantins ont mis en \u0153uvre une s\u00e9rie de tests en utilisant des r\u00e9actifs sp\u00e9cifiques pour chaque ion. Par exemple, ils ont utilis\u00e9 la solution de nitrate d\u2019argent pour identifier l\u2019ion chlorure, la solution de chlorure de baryum pour identifier l\u2019ion sulfate ou la solution d\u2019oxalate d\u2019ammonium pour identifier l\u2019ion calcium. C\u2019est comme un jeu de devinettes dans le laboratoire ! \ud83e\udde9\ud83e\udde9\ud83d\udd0e<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>A la recherche des ions, les laborantins confirment la composition min\u00e9rale de l&rsquo;eau Contrex !<\/em><\/strong><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-vertically-aligned-top\"><figure class=\"wp-block-media-text__media\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/03\/L0-TP-Ions-eau-laborantins-1024x1024.jpg\" alt=\"\" class=\"wp-image-8452 size-full\" srcset=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/03\/L0-TP-Ions-eau-laborantins-1024x1024.jpg 1024w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/03\/L0-TP-Ions-eau-laborantins-300x300.jpg 300w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/03\/L0-TP-Ions-eau-laborantins-150x150.jpg 150w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/03\/L0-TP-Ions-eau-laborantins-768x768.jpg 768w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/03\/L0-TP-Ions-eau-laborantins-1536x1536.jpg 1536w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/03\/L0-TP-Ions-eau-laborantins-2048x2048.jpg 2048w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/03\/L0-TP-Ions-eau-laborantins-600x600.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">Les laborantins ont effectu\u00e9 des tests pour identifier les ions chlorure, sulfate, calcium, fer III et bicarbonate pr\u00e9sents dans des solutions t\u00e9moins. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Puis ils ont r\u00e9alis\u00e9 ces tests pour rechercher les m\u00eames ions dans l&rsquo;eau min\u00e9rale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La comparaison des r\u00e9sultats a confirm\u00e9 la pr\u00e9sence des ions inscrits sur l&rsquo;\u00e9tiquette de la bouteille, confirmant ainsi la composition min\u00e9rale de l&rsquo;eau.<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Une exp\u00e9rience enrichissante pour apprendre la chimie<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Cette exp\u00e9rience a \u00e9t\u00e9 une occasion formidable pour les \u00e9l\u00e8ves de mettre en pratique leurs connaissances en analyse chimique, de faire des observations et des d\u00e9ductions. C\u2019est une fa\u00e7on ludique et enrichissante d\u2019apprendre la chimie ! Nous applaudissons les laborantins pour leur talent et leur passion ! \ud83d\udc4f\ud83d\udc4f\ud83d\udc4f\ud83d\udc4f\ud83d\udc4f\ud83d\udc4f\ud83d\udc4f\ud83d\udc4f\ud83d\udc4f<br><br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La chimie est une science qui nous r\u00e9v\u00e8le la nature de la mati\u00e8re. Mais comment analyser les \u00e9l\u00e9ments qui la composent ? C\u2019est le d\u00e9fi que les \u00e9l\u00e8ves de seconde [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":8345,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","omw_enable_modal_window":"enable","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[9,3],"tags":[38,39,23],"class_list":["post-8296","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-developpement-durable","category-formation","tag-chimie","tag-laboratoires","tag-travaux-pratiques","entry","has-media"],"jetpack_featured_media_url":"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2024\/02\/L0-TP-Ions-scaled.jpg","views":"","publishpress_future_action":{"enabled":false,"date":"2026-06-01 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