{"id":298,"date":"2020-11-28T20:37:50","date_gmt":"2020-11-28T19:37:50","guid":{"rendered":"http:\/\/apprendreenfamille.fr\/?p=298"},"modified":"2024-01-23T21:29:11","modified_gmt":"2024-01-23T20:29:11","slug":"un-peu-de-sciences-2","status":"publish","type":"post","link":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/2020\/11\/28\/un-peu-de-sciences-2\/","title":{"rendered":"Un peu de sciences"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/baladesetbricolage.enthoumas.fr\/wp-content\/uploads\/2024\/01\/IMG_8705redim.jpg\" alt=\"\" class=\"wp-image-299\" width=\"580\" height=\"386\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Exp\u00e9riences de dissolution :<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Se dissout dans l&#8217;eau ou&nbsp; ne se dissout pas?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Premi\u00e8res notions de pes\u00e9es des m\u00e9langes m\u00eame si&nbsp; la balance ne comporte pas d&#8217;unit\u00e9s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e9langes test\u00e9s :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>sel + eau : se dissout<\/li><li>sucre+ eau : se dissout<\/li><li>terre+ eau = boue : ne se dissout pas<\/li><li>caf\u00e9+eau : ne se dissout pas<\/li><li>poivre+ eau : ne se dissout pas<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/baladesetbricolage.enthoumas.fr\/wp-content\/uploads\/2024\/01\/IMG_8714redim.jpg\" alt=\"\" class=\"wp-image-300\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A cette occasion : transvaser sans renverser<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/baladesetbricolage.enthoumas.fr\/wp-content\/uploads\/2024\/01\/IMG_8739redim.jpg\" alt=\"\" class=\"wp-image-301\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">On a fait des gla\u00e7ons :<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"> L&#8217;eau liquide prend la forme de son contenant (moule). Puis on met au cong\u00e9lateur. La temp\u00e9rature descend au dessous de 0\u00b0C. Le gla\u00e7on se forme. Quelques heures plus tard on d\u00e9moule puis on voit que le gla\u00e7on fond \u00e0 temp\u00e9rature ambiante.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/baladesetbricolage.enthoumas.fr\/wp-content\/uploads\/2024\/01\/IMG_8741redim-683x1024.jpg\" alt=\"\" class=\"wp-image-302\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">On a fait bouillir de l&#8217;eau.<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">On a vu qu&#8217;\u00e0 100 \u00b0C et plus, l&#8217;eau bout. Des petites bulles se forment. Du gaz, de la vapeur d&#8217;eau se forme au dessus de la casserole.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/baladesetbricolage.enthoumas.fr\/wp-content\/uploads\/2024\/01\/IMG_8892redim-683x1024.jpg\" alt=\"\" class=\"wp-image-303\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Exp\u00e9rience : toujours de la place.<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">On remplit le verre d&#8217;eau \u00e0 raz bord. On prend des pi\u00e8ces de monnaie et on les met une par une. Mais l&#8217;eau ne d\u00e9borde pas, il y a toujours de la place! Au dessus du verre on voit une sorte de bulle d&#8217;eau qui d\u00e9passe. Il y a une sorte de peau de l&#8217;eau car les mol\u00e9cules d&#8217;eau sont attir\u00e9es les unes par les autres et ont du mal \u00e0 se s\u00e9parer. \u00c9videmment quand on rajoute beaucoup de pi\u00e8ces le verre finit par d\u00e9border mais j&#8217;avoue que m\u00eame moi je n&#8217;aurais pas devin\u00e9 qu&#8217;autant de pi\u00e8ces pouvaient encore tenir dans ce verre plein sans le faire d\u00e9border!<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/baladesetbricolage.enthoumas.fr\/wp-content\/uploads\/2024\/01\/IMG_8915redim.jpg\" alt=\"\" class=\"wp-image-306\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Mettre en \u00e9vidence la s\u00e8ve de la plante :<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Placer une p\u00e2querette dans un verre d&#8217;eau\u00a0 et une autre dans un verre d&#8217;eau color\u00e9e en bleu (colorant alimentaire).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Au bout de 24h la p\u00e2querette dans l&#8217;eau bleue prend une l\u00e9g\u00e8re couleur bleue. la plante a absorb\u00e9 l&#8217;eau color\u00e9e qui est mont\u00e9e jusqu&#8217;\u00e0 la fleur.<\/p>\n","protected":false},"excerpt":{"rendered":"<p class=\"text-justify\">exp\u00e9riences sur l&#8217;eau<\/p>\n","protected":false},"author":4,"featured_media":299,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"cybocfi_hide_featured_image":"yes","footnotes":""},"categories":[3],"tags":[38,40],"class_list":["post-298","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-activites-enfants","tag-experience","tag-sciences-eau"],"_links":{"self":[{"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/posts\/298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/comments?post=298"}],"version-history":[{"count":1,"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/posts\/298\/revisions"}],"predecessor-version":[{"id":6232,"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/posts\/298\/revisions\/6232"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/media\/299"}],"wp:attachment":[{"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/media?parent=298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/categories?post=298"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/baladesetbricolage.enthoumas.fr\/index.php\/wp-json\/wp\/v2\/tags?post=298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}