{"id":47190,"date":"2026-01-04T15:55:59","date_gmt":"2026-01-04T07:55:59","guid":{"rendered":"https:\/\/www.sgnutri.com\/?p=47190"},"modified":"2026-03-03T09:40:26","modified_gmt":"2026-03-03T01:40:26","slug":"le-glucose-est-il-une-substance-pure-2","status":"publish","type":"post","link":"https:\/\/www.sgnutri.com\/fr\/le-glucose-est-il-une-substance-pure-2\/","title":{"rendered":"Le glucose est-il une substance pure ?"},"content":{"rendered":"<div class=\"wp-block-themepark-block-themepark-wright content-super-p  blog-jiange\" style=\"font-size:17px;line-height:28px;color:#211c1c;padding:10px 20px;\">\n<div class=\"wp-block-column\">\n<p>La r\u00e9ponse est simple : oui, le glucose (C6H12O6) est absolument pur.<\/p>\n\n\n\n<p>La raison pour laquelle il est si qualitatif est qu'il s'agit d'un compos\u00e9 sp\u00e9cifique, que le rapport entre les atomes de carbone, d'hydrog\u00e8ne et d'oxyg\u00e8ne est compl\u00e8tement verrouill\u00e9 et que les propri\u00e9t\u00e9s sont coh\u00e9rentes. C'est tout \u00e0 fait diff\u00e9rent d'un m\u00e9lange (comme le jus de fruit que nous buvons). La composition du m\u00e9lange change et les propri\u00e9t\u00e9s physiques sont instables, ce qui n'est pas le cas du glucose.<\/p>\n\n\n\n<p>En chimie, nous jugeons si un produit est \"pur\", principalement pour voir s'il est compos\u00e9 de diff\u00e9rents \u00e9l\u00e9ments par le biais de liaisons chimiques \"soud\u00e9es \u00e0 mort\" dans une proportion fixe, formant un ensemble uniforme.<\/p>\n\n\n\n<p>Les \u00e9l\u00e9ments suivants constituent plusieurs bases fondamentales pour d\u00e9terminer si le glucose est pur :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La composition est immuable (composition fixe) : chaque mol\u00e9cule de glucose, o\u00f9 qu'elle se trouve, est toujours compos\u00e9e de 6 carbones, 12 hydrog\u00e8nes et 6 oxyg\u00e8nes (C6H12O6).<\/li>\n\n\n\n<li>Il s'agit d'un solide cristallin blanc dont le point de fusion et la solubilit\u00e9 sont uniques et compl\u00e8tement diff\u00e9rents des propri\u00e9t\u00e9s des \u00e9l\u00e9ments de carbone, d'hydrog\u00e8ne et d'oxyg\u00e8ne qui le composent.<\/li>\n\n\n\n<li>Liaison chimique plut\u00f4t qu'empilement physique : ses \u00e9l\u00e9ments sont li\u00e9s entre eux par des liaisons chimiques et ne sont pas simplement m\u00e9lang\u00e9s. Vous voulez les s\u00e9parer par de simples moyens physiques comme la filtration ou l'\u00e9vaporation ? C'est absolument impossible.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"450\" src=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-6-1024x450.png\" alt=\"Plusieurs principes de base pour d\u00e9terminer la puret\u00e9 du glucose.\" class=\"wp-image-47191\" srcset=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-6-1024x450.png 1024w, https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-6-300x132.png 300w, https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-6-768x337.png 768w, https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-6-18x8.png 18w, https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-6.png 1116w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Understanding_The_Hard_Index_Of_%E2%80%9CFixed_Composition%E2%80%9D\"><\/span>Comprendre l'indice de duret\u00e9 de la \"composition fixe\"<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Pour r\u00e9pondre de mani\u00e8re rigoureuse \u00e0 la question de savoir si le glucose est pur, il faut descendre jusqu'\u00e0 la structure atomique. L'indicateur le plus difficile \u00e0 \u00e9valuer pour les substances pures est la composition fixe.<\/p>\n\n\n\n<p>Pour le glucose, son \"num\u00e9ro d'identification\" est C6H12O6. Cela signifie que, quel que soit l'endroit de l'univers o\u00f9 l'on trouve du glucose, chaque mol\u00e9cule doit en contenir strictement :<\/p>\n\n\n\n<p>6 atomes de carbone<\/p>\n\n\n\n<p>12 atomes d'hydrog\u00e8ne.<\/p>\n\n\n\n<p>6 atomes d'oxyg\u00e8ne<\/p>\n\n\n\n<p>Ce rapport change m\u00eame l\u00e9g\u00e8rement - par exemple, il devient C12H22O11 - Il ne s'agit alors plus du tout de glucose, mais de saccharose ou d'un autre sucre. Parce qu'il respecte strictement la \"loi de composition d\u00e9finie\", le rapport de masse entre les \u00e9l\u00e9ments est in\u00e9branlable, de sorte que dans la classification scientifique, il est indubitablement pur.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Constancy_Of_Physical_And_Chemical_Properties\"><\/span>Constance des propri\u00e9t\u00e9s physiques et chimiques<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Une autre raison d'\u00eatre convaincu qu'il est pur est que ses propri\u00e9t\u00e9s sont toujours pr\u00e9visibles, quelle que soit la source.<\/p>\n\n\n\n<p>C'est un contraste frappant avec le m\u00e9lange. Si vous pensez au miel ou au jus de fruit, leur pouvoir sucrant, leur densit\u00e9 et m\u00eame leur point d'\u00e9bullition augmentent ou diminuent en fonction de la concentration des ingr\u00e9dients. En revanche, le glucose pur est \"constant\". Lorsque les chercheurs ont test\u00e9 le glucose pur, les caract\u00e9ristiques observ\u00e9es \u00e0 chaque fois \u00e9taient exactement les m\u00eames :<\/p>\n\n\n\n<p>\u00c9tat de la mati\u00e8re : solide cristallin blanc \u00e0 temp\u00e9rature ambiante.<\/p>\n\n\n\n<p>Point de fusion : il pr\u00e9sente une plage de points de fusion sp\u00e9cifique (\u03b1-D-glucose \u00e0 environ 146\u00b0C).<\/p>\n\n\n\n<p>Solubilit\u00e9 : Son comportement de dissolution dans l'eau peut \u00eatre pr\u00e9dit avec pr\u00e9cision.<\/p>\n\n\n\n<p>Ces propri\u00e9t\u00e9s sont grav\u00e9es dans les os de la mol\u00e9cule de glucose (propri\u00e9t\u00e9s intrins\u00e8ques). Si le point d'\u00e9bullition d'une substance est irr\u00e9gulier ou si sa densit\u00e9 varie, il s'agit probablement d'un m\u00e9lange et non d'une substance pure comme le glucose.<\/p>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"maxw\" style=\"padding-bottom:100px;padding-top:100px;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in clomnsmal  clomnnone\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<p class=\"has-text-align-center has-themecolor-1-color has-text-color has-link-color has-large-font-size wp-elements-a412b82537ce59baad06b01a96b3c1d2\"><strong>\u00c0 la pointe de la nutrition<\/strong><\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined  product-demo1\" id=\"maxw\" style=\"\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in clomnsmal  clomnnone\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:14px;line-height:25px;color:#333333;padding:20px 20px;\">\n<div class=\"wp-block-column\">\n<p class=\"has-themecolor-1-color has-text-color has-link-color has-medium-font-size wp-elements-abc467a7e19bc0b8f4faebef530f0542\"><strong><strong><strong><strong><strong><strong>Fibres solubles<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>La fibre soluble est un ingr\u00e9dient alimentaire tr\u00e8s stable et indigeste qui favorise le contr\u00f4le du poids en augmentant la sati\u00e9t\u00e9 et en r\u00e9duisant la prise alimentaire. D'application polyvalente, elle est largement utilis\u00e9e pour am\u00e9liorer le profil nutritionnel et la texture des aliments, des boissons et des produits de sant\u00e9.<\/p>\n\n\n\n<div style=\"height:16px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-themepark-block-btn themepark-i-btn-out\" style=\"text-align:undefined;\"><div class=\"themepark-i-btn-out_ins\" style=\"\"><div class=\"themepark-i-btn-out_in\"><div class=\"themepark-i-btn\" style=\"background-color:#0aa652;color:#ffffff;font-size:14px;border:solid 1px #318ec8;padding:6px 43px;\"><a href=\"https:\/\/www.sgnutri.com\/fr\/categorie\/tous-les-produits\/fibres-solubles\/\" rel=\"noopener noreferrer \">Obtenir un devis<\/a><a class=\"hovers\" data-title=\"Get Quote\" style=\"color:#318ec8;background-color:#ffffff;padding:6px 43px;\" href=\"https:\/\/www.sgnutri.com\/fr\/categorie\/tous-les-produits\/fibres-solubles\/\" rel=\"noopener noreferrer\" target=\"_self\"><\/a><\/div><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:5%\"><\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:50%\">\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"\" style=\"padding-top:110px;height:300px;box-sizing: border-box;width: 100%;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<h2 class=\"wp-block-heading has-text-align-center hover-only-title has-themecolor-1-color has-text-color has-link-color wp-elements-b45b7f3fb95a8220ad5d673dd5e4fc25\" style=\"font-size:30px\"><span class=\"ez-toc-section\" id=\"Soluble_Fiber\"><\/span><strong><strong><strong><strong><strong>Fibres solubles<\/strong><\/strong><\/strong><\/strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div><div class=\"layout_badh\"><div class=\"PcOnly themepark-block_layout_ba lazyload swiper-lazy\" style=\"background-repeat:no-repeat;background-size:cover;\" data-background=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2025\/12\/\u672a\u6807\u9898-2.png\"><\/div><div class=\"MovePnly themepark-block_layout_ba lazyload swiper-move-lazy\" style=\"background-repeat:no-repeat;background-size:cover;\" data-background=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2025\/12\/\u672a\u6807\u9898-2.png\"><\/div><\/div><\/section>\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined  product-demo1\" id=\"maxw\" style=\"\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in clomnsmal  clomnnone\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:14px;line-height:25px;color:#333333;padding:20px 20px;\">\n<div class=\"wp-block-column\">\n<p class=\"has-themecolor-1-color has-text-color has-link-color has-medium-font-size wp-elements-04e1b3374feb268aed97152a1f9aac63\"><strong><strong>Pr\u00e9biotique<\/strong><\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Un pr\u00e9biotique fonctionne comme un facteur de prolif\u00e9ration qui est d\u00e9grad\u00e9 et utilis\u00e9 de mani\u00e8re s\u00e9lective par des bact\u00e9ries intestinales b\u00e9n\u00e9fiques, telles que&nbsp;<em>Bifidobact\u00e9ries<\/em>. Ce processus exerce un effet positif sur la sant\u00e9 humaine en g\u00e9n\u00e9ral, souvent accompagn\u00e9 d'avantages m\u00e9taboliques tels qu'un faible impact calorique et des fluctuations minimes de la glyc\u00e9mie en raison de leur stabilit\u00e9 digestive unique.<\/p>\n\n\n\n<div style=\"height:16px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-themepark-block-btn themepark-i-btn-out\" style=\"text-align:undefined;\"><div class=\"themepark-i-btn-out_ins\" style=\"\"><div class=\"themepark-i-btn-out_in\"><div class=\"themepark-i-btn\" style=\"background-color:#0aa652;color:#ffffff;font-size:14px;border:solid 1px #318ec8;padding:6px 43px;\"><a href=\"https:\/\/www.sgnutri.com\/fr\/categorie\/tous-les-produits\/prebiotique\/\" rel=\"noopener noreferrer \">Obtenir un devis<\/a><a class=\"hovers\" data-title=\"Get Quote\" style=\"color:#318ec8;background-color:#ffffff;padding:6px 43px;\" href=\"https:\/\/www.sgnutri.com\/fr\/categorie\/tous-les-produits\/prebiotique\/\" rel=\"noopener noreferrer\" target=\"_self\"><\/a><\/div><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:5%\"><\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:50%\">\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"\" style=\"padding-top:110px;height:300px;box-sizing: border-box;width: 100%;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<h2 class=\"wp-block-heading has-text-align-center hover-only-title has-themecolor-1-color has-text-color has-link-color wp-elements-6dcb043e5f0a710efa5e014da6febeb2\" style=\"font-size:30px\"><span class=\"ez-toc-section\" id=\"Prebiotic\"><\/span><strong><strong>Pr\u00e9biotique<\/strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div><div class=\"layout_badh\"><div class=\"PcOnly themepark-block_layout_ba lazyload swiper-lazy\" style=\"background-repeat:no-repeat;background-size:cover;\" data-background=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2025\/12\/\u672a\u6807\u9898-5.png\"><\/div><div class=\"MovePnly themepark-block_layout_ba lazyload swiper-move-lazy\" style=\"background-repeat:no-repeat;background-size:cover;\" data-background=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2025\/12\/\u672a\u6807\u9898-5.png\"><\/div><\/div><\/section>\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined  product-demo1\" id=\"maxw\" style=\"\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in clomnsmal  clomnnone\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:14px;line-height:25px;color:#333333;padding:20px 20px;\">\n<div class=\"wp-block-column\">\n<p class=\"has-themecolor-1-color has-text-color has-link-color has-medium-font-size wp-elements-9c16a18866d3d60738f810938ceef076\"><strong>Vitamines<\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><br>Les vitamines sont des micronutriments organiques essentiels, class\u00e9s en formes hydrosolubles et liposolubles, qui r\u00e9gulent des processus physiologiques essentiels tels que le m\u00e9tabolisme, l'immunit\u00e9 et la coagulation.  En raison de leur sensibilit\u00e9 \u00e0 la lumi\u00e8re, \u00e0 la chaleur et \u00e0 l'humidit\u00e9, <\/p>\n\n\n\n<div style=\"height:16px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-themepark-block-btn themepark-i-btn-out\" style=\"text-align:undefined;\"><div class=\"themepark-i-btn-out_ins\" style=\"\"><div class=\"themepark-i-btn-out_in\"><div class=\"themepark-i-btn\" style=\"background-color:#0aa652;color:#ffffff;font-size:14px;border:solid 1px #318ec8;padding:6px 43px;\"><a href=\"https:\/\/www.sgnutri.com\/fr\/categorie\/tous-les-produits\/viatmins\/\" rel=\"noopener noreferrer \">Obtenir un devis<\/a><a class=\"hovers\" data-title=\"Get Quote\" style=\"color:#318ec8;background-color:#ffffff;padding:6px 43px;\" href=\"https:\/\/www.sgnutri.com\/fr\/categorie\/tous-les-produits\/viatmins\/\" rel=\"noopener noreferrer\" target=\"_self\"><\/a><\/div><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:5%\"><\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:50%\">\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"\" style=\"padding-top:110px;height:300px;box-sizing: border-box;width: 100%;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<h2 class=\"wp-block-heading has-text-align-center hover-only-title has-themecolor-1-color has-text-color has-link-color wp-elements-cb59af2c229b8669dc39731809bb0a5b\" style=\"font-size:30px\"><span class=\"ez-toc-section\" id=\"Vitamins\"><\/span><strong>Vitamines<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div><div class=\"layout_badh\"><div class=\"PcOnly themepark-block_layout_ba lazyload swiper-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-position:center;\" data-background=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2025\/12\/\u672a\u6807\u9898-3.png\"><\/div><div class=\"MovePnly themepark-block_layout_ba lazyload swiper-move-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-position:center;\" data-background=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2025\/12\/\u672a\u6807\u9898-3.png\"><\/div><\/div><\/section>\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>\n\n\n\n<style>\n.product-demo1{\n  border:1px solid #D4D4D4;\n}\n\n\/* \u533a\u5757\u6574\u4f53 hover \u80cc\u666f + \u6587\u5b57\u53d8\u767d *\/\n.product-demo1 {\n    transition: background-color 0.45s ease;\n}\n\n.product-demo1:hover {\n    background-color: var(--wp--preset--color--themecolor-1);\n}\n\n\/* \u5de6\u4fa7\u6240\u6709\u6587\u5b57 hover \u540e\u5f3a\u5236\u767d\u8272 *\/\n.product-demo1:hover .content-super-p,\n.product-demo1:hover .content-super-p p,\n.product-demo1:hover .content-super-p strong,\n.product-demo1:hover .content-super-p .has-medium-font-size {\n    color: #ffffff !important;\n}\n\n\/* \u6309\u94ae\uff1a\u521d\u59cb\u4e3b\u9898\u8272\u5e95+\u767d\u5b57 \u2192 hover \u767d\u5e95+\u4e3b\u9898\u8272\u5b57 *\/\n.product-demo1 .themepark-i-btn {\n    background-color: var(--wp--preset--color--themecolor-1) !important;\n    color: #ffffff !important;\n    border-color: var(--wp--preset--color--themecolor-1) !important;\n    transition: all 0.4s ease;\n}\n\n.product-demo1:hover .themepark-i-btn {\n    background-color: #ffffff !important;\n    color: var(--wp--preset--color--themecolor-1) !important;\n    border-color: var(--wp--preset--color--themecolor-1) !important;\n}\n\n\/* \u2500\u2500\u2500 \u53f3\u4fa7\u56fe\u7247\u533a\u57df\uff1a\u906e\u7f69 + hover-only-title \u2500\u2500\u2500 *\/\n\n.PcOnly.themepark-block_layout_ba {\n    position: relative;           \/* \u5173\u952e\uff1a\u8ba9 ::before \u548c\u5b50\u5143\u7d20\u5b9a\u4f4d *\/\n}\n\n\/* \u906e\u7f69\u5c42\uff1a\u521d\u59cb\u5b8c\u5168\u900f\u660e *\/\n.PcOnly.themepark-block_layout_ba::before {\n    content: \"\";\n    position: absolute;\n    inset: 0;\n    background-color: #000;\n    opacity: 0;\n    transition: opacity 0.5s ease;\n    z-index: 1;\n    pointer-events: none;\n}\n\n\/* hover \u540e\u663e\u793a 30% \u906e\u7f69 *\/\n.product-demo1:hover .PcOnly.themepark-block_layout_ba::before {\n    opacity: 0.3;\n}\n\n\/* hover-only-title\uff1a\u521d\u59cb\u9690\u85cf *\/\n.hover-only-title {\n    opacity: 0;\n    visibility: hidden;\n    transform: translateY(30px);           \/* \u7a0d\u5fae\u5411\u4e0b\u504f\u79fb\uff0c\u589e\u52a0\u51fa\u73b0\u65f6\u7684\u52a8\u6001 *\/\n    transition: all 0.55s ease;\n    z-index: 2;                            \/* \u786e\u4fdd\u5728\u906e\u7f69\u4e0a\u9762 *\/\n    position: relative;                    \/* \u76f8\u5bf9\u5b9a\u4f4d\uff0c\u907f\u514d\u88ab ::before \u76d6\u4f4f *\/\n    text-shadow: 0 3px 12px rgba(0,0,0,0.7);\n}\n\n\/* \u533a\u5757 hover \u540e\uff1a\u663e\u793a\u6807\u9898 + \u5f52\u4f4d + \u52a8\u753b *\/\n.product-demo1:hover .hover-only-title {\n    opacity: 1;\n    visibility: visible;\n    transform: translateY(0);\n}\n\n\/* \u53ef\u9009\uff1ahover \u65f6\u8ba9\u6807\u9898\u66f4\u7a81\u51fa\uff08\u8f7b\u5fae\u653e\u5927\uff09 *\/\n.product-demo1:hover .hover-only-title {\n    transform: translateY(0) scale(1.05);\n}\n<\/style>\n<\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>\n\n\n\n<style>\n.radius-border20 {\n  border-radius: 20px;\n}\n\n.product-hover {\n  position: relative;\n  overflow: hidden;\n  cursor: pointer;\n  border-radius: 20px;\n  transition: box-shadow 0.4s ease, transform 0.3s ease;\n  box-shadow: 0 4px 12px rgba(0,0,0,0.08);\n}\n\n.product-hover:hover {\n  box-shadow:\n    \/* \u4e3b\u8272\u504f\u79fb\u5c64\uff08\u5be6\u5fc3\u504f\u79fb\uff09 *\/\n    5px 5px 0 var(--wp--preset--color--themecolor-1),\n    \n    \/* \u6539\u7528\u4e3b\u984c\u8272\u7684\u67d4\u548c\u5149\u6688\/\u6a21\u7cca\u5c64\uff08\u53d6\u4ee3\u539f\u672c\u7684\u767d\u8272 0.35\uff09 *\/\n    10px 10px 20px color-mix(in srgb, var(--wp--preset--color--themecolor-1) 25%, transparent),\n    \n    \/* \u6574\u9ad4\u9670\u5f71\u4e5f\u5e36\u4e00\u9ede\u4e3b\u984c\u8272\u8abf\uff08\u53d6\u4ee3\u7d14\u9ed1\uff09 *\/\n    0 10px 24px color-mix(in srgb, var(--wp--preset--color--themecolor-1) 12%, rgba(0,0,0,0.10));\n  \n  transform: translateY(-3px);\n}\n\n.product-hover:hover .themepark-i-btn {\n  background-color: var(--wp--preset--color--themecolor-1) !important;\n  color: #ffffff !important;\n  transition: all 0.3s ease;\n}\n\n.product-hover:hover .hovers {\n  background-color: var(--wp--preset--color--themecolor-1) !important;\n  color: #ffffff !important;\n}\n<\/style>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"It_Is_A_Compound_Not_A_Mixture\"><\/span>Il s'agit d'un compos\u00e9 et non d'un m\u00e9lange<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Lorsque l'on aborde cette question, de nombreuses personnes ont tendance \u00e0 confondre les compos\u00e9s et les m\u00e9langes. Il faut mettre l'accent sur ce point :<\/p>\n\n\n\n<p>Les m\u00e9langes (comme l'eau sal\u00e9e, l'air) sont des substances qui sont physiquement \"assembl\u00e9es\" sans r\u00e9action chimique. On peut les faire \u00e9vaporer au soleil ou les s\u00e9parer \u00e0 l'aide d'un papier filtre.<\/p>\n\n\n\n<p>Les \u00e9l\u00e9ments d'un compos\u00e9 (comme le glucose, l'eau) sont chimiquement li\u00e9s.<\/p>\n\n\n\n<p>Le glucose appartient au camp des compos\u00e9s stricts. Ses atomes de carbone, d'hydrog\u00e8ne et d'oxyg\u00e8ne sont \u00e9troitement li\u00e9s par de fortes liaisons covalentes. Il est impossible de s\u00e9parer le carbone de l'hydrog\u00e8ne \u00e0 l'aide d'une passoire, et il est impossible de le faire bouillir et de le faire bouillir. Vous voulez d\u00e9sassembler le glucose ? Vous devez avoir recours \u00e0 des r\u00e9actions chimiques, telles que la combustion ou la respiration cellulaire.<\/p>\n\n\n\n<p>Cette \"immunit\u00e9\" \u00e0 la s\u00e9paration physique est la preuve irr\u00e9futable que le glucose est une substance pure.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"495\" src=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-7-1024x495.png\" alt=\"Image du glucose\" class=\"wp-image-47192\" srcset=\"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-7-1024x495.png 1024w, https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-7-300x145.png 300w, https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-7-768x371.png 768w, https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-7-18x9.png 18w, https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-7.png 1155w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Is_It_Not_Elemental\"><\/span>Pourquoi n'est-il pas \u00e9l\u00e9mentaire ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Enfin, une petite mise au point sur un mythe courant : bien que le glucose soit pur, ce n'est pas un \u00e9l\u00e9ment.<\/p>\n\n\n\n<p>Les \u00e9l\u00e9ments (substances simples) ne contiennent que des atomes (comme l'oxyg\u00e8ne pur O2, le carbone pur C).<\/p>\n\n\n\n<p>Le glucose est assembl\u00e9 \u00e0 partir de trois atomes diff\u00e9rents (C, H, O).<\/p>\n\n\n\n<p>Cependant, dans le cadre g\u00e9n\u00e9ral de la classification chimique, le concept de \"mati\u00e8re pure\" est un grand panier, contenant \u00e0 la fois des \u00e9l\u00e9ments et des compos\u00e9s. Le glucose \u00e9tant un compos\u00e9 \u00e0 la composition uniforme et fixe, il r\u00e9pond parfaitement \u00e0 tous les crit\u00e8res d'une substance pure. Bien qu'il ne soit pas aussi simple que les \u00e9l\u00e9ments, il constitue une famille dans la \"puret\u00e9\" de cette classification.<\/p>\n\n\n\n<p><strong>Auteur : Alex Thorne<\/strong><\/p>\n\n\n\n<p>\" Avec un doctorat en chimie organique et plus de 10 ans d'exp\u00e9rience dans l'enseignement des sciences, je me sp\u00e9cialise dans la d\u00e9composition de concepts chimiques complexes en explications claires et pr\u00e9cises. J'esp\u00e8re aider les \u00e9tudiants et les passionn\u00e9s \u00e0 faire strictement la distinction entre les compos\u00e9s, les \u00e9l\u00e9ments et les m\u00e9langes.\"<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":47191,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"themepark_post_bcolor":"#ffffff","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"#ffffff","themepark_post_main_p":100,"themepark_paddingblock":true,"footnotes":""},"categories":[65],"tags":[],"class_list":["post-47190","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article"],"metadata":{"_edit_lock":["1772502105:1"],"_thumbnail_id":["47191"],"themepark_post_bcolor":["#ffffff"],"themepark_post_width":["1022px"],"themepark_post_img":[""],"themepark_post_img_po":["left"],"themepark_post_img_re":[""],"themepark_post_img_cover":[""],"themepark_post_img_fixed":[""],"themepark_post_hide_title":[""],"themepark_post_main_b":["#ffffff"],"themepark_post_main_p":["100"],"themepark_paddingblock":["1"],"footnotes":[""],"rank_math_seo_score":["18"],"rank_math_primary_category":["65"],"_edit_last":["1"],"_ez-toc-disabled":[""],"_ez-toc-insert":[""],"_ez-toc-header-label":[""],"_ez-toc-device-target":[""],"_ez-toc-alignment":["none"],"_ez-toc-heading-levels":["a:0:{}"],"_ez-toc-alttext":[""],"_ez-toc-visibility_hide_by_default":[""],"_ez-toc-hide_counter":[""],"_ez-toc-exclude":[""],"_ez-toc-position-specific":[""],"themepark_seo_title":["Is Glucose A Pure Substance"],"themepark_seo_description":["Yes, Glucose (C6h12o6) Is A Pure Substance. Learn Why It Qualifies As A Chemical Compound With Fixed Properties."],"themepark_seo_keyword":["Is Glucose A Pure Substance"],"catce":["sidebar-widgets4"],"_trp_automatically_translated_slug_ar":["\u0647\u0644-\u0627\u0644\u062c\u0644\u0648\u0643\u0648\u0632-\u0645\u0627\u062f\u0629-\u0646\u0642\u064a\u0629-2"],"_trp_automatically_translated_slug_de_DE":["ist-glukose-ein-reiner-stoff-2"],"_trp_automatically_translated_slug_es_ES":["es-la-glucosa-una-sustancia-pura-2"],"_trp_automatically_translated_slug_fr_FR":["le-glucose-est-il-une-substance-pure-2"],"_trp_automatically_translated_slug_ja":["\u30b0\u30eb\u30b3\u30fc\u30b9\u306f\u7d14\u7c8b\u306a\u7269\u8cea\u304b-2"],"views":["367"],"_trp_automatically_translated_slug_it_IT":["il-glucosio-e-una-sostanza-pura-2"],"_trp_automatically_translated_slug_ko_KR":["\ud3ec\ub3c4\ub2f9\uc740-\uc21c\uc218\ud55c-\ubb3c\uc9c8\uc778\uac00-2"],"product_title":[""],"_product_title":["field_696dddd18cafe"],"product_description":[""],"_product_description":["field_696ddded8caff"],"product_parameter1":[""],"_product_parameter1":["field_696dddf48cb00"],"product_parameter2":[""],"_product_parameter2":["field_696dddfd8cb01"],"product_parameter3":[""],"_product_parameter3":["field_696dde018cb02"],"product_parameter_description1":[""],"_product_parameter_description1":["field_696dde048cb03"],"product_parameter_description2":[""],"_product_parameter_description2":["field_696dde0c8cb04"],"product_parameter_description3":[""],"_product_parameter_description3":["field_696dde118cb05"],"characteristics_tittle":[""],"_characteristics_tittle":["field_696dde148cb06"],"characteristics_tittle1":[""],"_characteristics_tittle1":["field_696dde1b8cb07"],"characteristics_tittle2":[""],"_characteristics_tittle2":["field_696dde238cb08"],"characteristics_tittle3":[""],"_characteristics_tittle3":["field_696dde278cb09"],"characteristics_tittle4":[""],"_characteristics_tittle4":["field_696dde2a8cb0a"],"characteristics_tittle5":[""],"_characteristics_tittle5":["field_696dde2e8cb0b"],"characteristics_tittle6":[""],"_characteristics_tittle6":["field_696dde318cb0c"],"characteristics_description1":[""],"_characteristics_description1":["field_696dde368cb0d"],"characteristics_description2":[""],"_characteristics_description2":["field_696dde408cb0e"],"characteristics_description3":[""],"_characteristics_description3":["field_696dde438cb0f"],"characteristics_description4":[""],"_characteristics_description4":["field_696dde468cb10"],"characteristics_description5":[""],"_characteristics_description5":["field_696dde498cb11"],"characteristics_description6":[""],"_characteristics_description6":["field_696dde4d8cb12"],"comparison_points_tittle":[""],"_comparison_points_tittle":["field_696dde528cb13"],"comparison_points_tittle1":[""],"_comparison_points_tittle1":["field_696dde608cb14"],"comparison_points_tittle2":[""],"_comparison_points_tittle2":["field_696dde668cb15"],"comparison_points_tittle3":[""],"_comparison_points_tittle3":["field_696dde6c8cb16"],"comparison_points_description":[""],"_comparison_points_description":["field_696dde708cb17"],"comparison_points_description1":[""],"_comparison_points_description1":["field_696dde888cb18"],"comparison_points_description2":[""],"_comparison_points_description2":["field_696dde908cb19"],"comparison_points_description3":[""],"_comparison_points_description3":["field_696dde948cb1a"],"application_title":[""],"_application_title":["field_696dde988cb1b"],"application_title1":[""],"_application_title1":["field_696ddea68cb1c"],"application_title2":[""],"_application_title2":["field_696ddeb18cb1d"],"application_title3":[""],"_application_title3":["field_696ddeb58cb1e"],"application_title4":[""],"_application_title4":["field_696ddebd8cb1f"],"application_describe1":[""],"_application_describe1":["field_696ddec48cb20"],"application_describe2":[""],"_application_describe2":["field_696dded08cb21"],"application_describe3":[""],"_application_describe3":["field_696dded38cb22"],"application_describe4":[""],"_application_describe4":["field_696dded78cb23"],"instruction_title":[""],"_instruction_title":["field_696ddedb8cb24"],"instruction_title1":[""],"_instruction_title1":["field_696ddee68cb25"],"instruction_title2":[""],"_instruction_title2":["field_696ddef58cb26"],"instruction_title3":[""],"_instruction_title3":["field_696ddef98cb27"],"instruction_title4":[""],"_instruction_title4":["field_696ddefc8cb28"],"instruction_describe1":[""],"_instruction_describe1":["field_696ddeff8cb29"],"instruction_describe2":[""],"_instruction_describe2":["field_696ddf078cb2a"],"instruction_describe3":[""],"_instruction_describe3":["field_696ddf0b8cb2b"],"instruction_describe4":[""],"_instruction_describe4":["field_696ddf0e8cb2c"],"material":[""],"_material":["field_696eed876b2b8"],"material_description":[""],"_material_description":["field_696eed896b2b9"],"pre_and_post_sales_titles":[""],"_pre_and_post_sales_titles":["field_696eed906b2ba"],"after_sales_service_title":[""],"_after_sales_service_title":["field_696eeda36b2bb"],"before_sales_service_title":[""],"_before_sales_service_title":["field_696eedbb6b2bc"],"after_sales_service_describe":[""],"_after_sales_service_describe":["field_696eedc86b2bd"],"before_sales_service_describe":[""],"_before_sales_service_describe":["field_696eedcf6b2be"],"faq_question1":[""],"_faq_question1":["field_696eedd56b2bf"],"faq_question2":[""],"_faq_question2":["field_696eedee6b2c0"],"faq_question3":[""],"_faq_question3":["field_696eedf36b2c1"],"faq_question4":[""],"_faq_question4":["field_696eedf76b2c2"],"faq_question5":[""],"_faq_question5":["field_696eedfb6b2c3"],"faq_question6":[""],"_faq_question6":["field_696eedfe6b2c4"],"faq_answer1":[""],"_faq_answer1":["field_696eee026b2c5"],"faq_answer2":[""],"_faq_answer2":["field_696eee0b6b2c6"],"faq_answer3":[""],"_faq_answer3":["field_696eee0e6b2c7"],"faq_answer4":[""],"_faq_answer4":["field_696eee126b2c8"],"faq_answer5":[""],"_faq_answer5":["field_696eee156b2c9"],"faq_answer6":[""],"_faq_answer6":["field_696eee196b2ca"],"detailed_specifications_table":[""],"_detailed_specifications_table":["field_697738b0ef515"],"aggregated_titles":[""],"_aggregated_titles":["field_698ad8fabfec6"],"aggregate_description":[""],"_aggregate_description":["field_698ad913bfec7"],"polymer_product_sku1":[""],"_polymer_product_sku1":["field_698ad932bfec8"],"polymer_product_sku2":[""],"_polymer_product_sku2":["field_698ad93dbfec9"],"polymer_product_sku3":[""],"_polymer_product_sku3":["field_698ad941bfeca"],"aggregated_product_titles1":[""],"_aggregated_product_titles1":["field_698ad945bfecb"],"aggregated_product_titles2":[""],"_aggregated_product_titles2":["field_698ad94dbfecc"],"aggregated_product_titles3":[""],"_aggregated_product_titles3":["field_698ad954bfecd"],"aggregated_product_description1":[""],"_aggregated_product_description1":["field_698ad957bfece"],"aggregated_product_description2":[""],"_aggregated_product_description2":["field_698ad961bfecf"],"aggregated_product_description3":[""],"_aggregated_product_description3":["field_698ad965bfed0"],"polymerization_characteristics_tittle":[""],"_polymerization_characteristics_tittle":["field_699d3c712ad62"],"polymerization_characteristics1":[""],"_polymerization_characteristics1":["field_699d3c742ad63"],"polymerization_characteristics2":[""],"_polymerization_characteristics2":["field_699d3c7d2ad64"],"polymerization_characteristics3":[""],"_polymerization_characteristics3":["field_699d3c802ad65"],"polymerization_characteristics4":[""],"_polymerization_characteristics4":["field_699d3c842ad66"],"polymerization_characteristics5":[""],"_polymerization_characteristics5":["field_699d3c8d2ad67"],"polymerization_characteristics6":[""],"_polymerization_characteristics6":["field_699d3c902ad68"],"polymerization_characteristics_descr1":[""],"_polymerization_characteristics_descr1":["field_699d3c9a2ad69"],"polymerization_characteristics_descr2":[""],"_polymerization_characteristics_descr2":["field_699d3c9c2ad6a"],"polymerization_characteristics_descr3":[""],"_polymerization_characteristics_descr3":["field_699d3c9f2ad6b"],"polymerization_characteristics_descr4":[""],"_polymerization_characteristics_descr4":["field_699d3ca22ad6c"],"polymerization_characteristics_descr5":[""],"_polymerization_characteristics_descr5":["field_699d3ca52ad6d"],"polymerization_characteristics_descr6":[""],"_polymerization_characteristics_descr6":["field_699d3ca92ad6e"],"aggregated_application_scenarios_tittle":[""],"_aggregated_application_scenarios_tittle":["field_699d3cae2ad6f"],"aggregated_application_scenarios1":[""],"_aggregated_application_scenarios1":["field_699d3cbd2ad70"],"aggregated_application_scenarios2":[""],"_aggregated_application_scenarios2":["field_699d3cc52ad71"],"aggregated_application_scenarios3":[""],"_aggregated_application_scenarios3":["field_699d3cc92ad72"],"aggregated_application_scenarios4":[""],"_aggregated_application_scenarios4":["field_699d3ccc2ad73"],"aggregated_application_scenarios5":[""],"_aggregated_application_scenarios5":["field_699d3cd02ad74"],"aggregated_application_scenarios6":[""],"_aggregated_application_scenarios6":["field_699d3cd42ad75"],"product_parameter4":[""],"_product_parameter4":["field_698bf07160199"],"product_parameter5":[""],"_product_parameter5":["field_698bf0746019a"],"product_parameter6":[""],"_product_parameter6":["field_698bf0786019b"],"product_parameter7":[""],"_product_parameter7":["field_698bf07b6019c"],"product_parameter8":[""],"_product_parameter8":["field_698bf07e6019d"],"product_parameter9":[""],"_product_parameter9":["field_698bf0816019e"],"parameter_describ":[""],"_parameter_describ":["field_698bf08a6019f"],"product_parameter_description4":[""],"_product_parameter_description4":["field_698bf04f60193"],"product_parameter_description5":[""],"_product_parameter_description5":["field_698bf05560194"],"product_parameter_description6":[""],"_product_parameter_description6":["field_698bf05960195"],"product_parameter_description7":[""],"_product_parameter_description7":["field_698bf05c60196"],"product_parameter_description8":[""],"_product_parameter_description8":["field_698bf05f60197"],"product_parameter_description9":[""],"_product_parameter_description9":["field_698bf06360198"]},"acf":[],"medium_url":"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-6-300x132.png","thumbnail_url":"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-6-150x150.png","full_url":"https:\/\/www.sgnutri.com\/wp-content\/uploads\/2026\/01\/image-6.png","_links":{"self":[{"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/posts\/47190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/comments?post=47190"}],"version-history":[{"count":6,"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/posts\/47190\/revisions"}],"predecessor-version":[{"id":48334,"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/posts\/47190\/revisions\/48334"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/media\/47191"}],"wp:attachment":[{"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/media?parent=47190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/categories?post=47190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sgnutri.com\/fr\/wp-json\/wp\/v2\/tags?post=47190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}