{"id":8408,"date":"2023-10-22T23:46:00","date_gmt":"2023-10-22T22:46:00","guid":{"rendered":"https:\/\/exos.education\/fr\/exercice-sciences-matieres-transformations-cm2\/"},"modified":"2023-08-21T14:54:48","modified_gmt":"2023-08-21T13:54:48","slug":"exercice-sciences-matieres-transformations-cm2","status":"publish","type":"post","link":"https:\/\/exos.education\/fr\/exercice-sciences-matieres-transformations-cm2\/","title":{"rendered":"Exercice Sciences Mati\u00e8res Transformations CM2"},"content":{"rendered":"<p>Points importants du cours:<br \/>1. Les mati\u00e8res peuvent changer d&rsquo;\u00e9tat: solide, liquide ou gazeux.<br \/>2. Ces changements d&rsquo;\u00e9tats se produisent \u00e0 des temp\u00e9ratures sp\u00e9cifiques pour chaque mati\u00e8re: point de fusion et point d&rsquo;\u00e9bullition.<br \/>3. Les m\u00e9langes : une mati\u00e8re peut \u00eatre pure ou bien un m\u00e9lange de plusieurs substances.<\/p>\n<p>Consignes pour l&rsquo;exercice:<br \/>Choisis la bonne r\u00e9ponse et partage-la avec tes camarades lors de la correction en classe.<\/p>\n<p>QCM: <\/p>\n<p>1. L&rsquo;eau est une mati\u00e8re qui change d&rsquo;\u00e9tat :<br \/>A) \u00c0 -10\u00b0C <img decoding=\"async\" draggable=false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f4a7.svg\"> <br \/>B) Autour de 0\u00b0C <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\"\u2744\ufe0f\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/2744.svg\"> <br \/>C) \u00c0 100\u00b0C <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\"\u2601\ufe0f\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/2601.svg\"> <\/p>\n<p>2. Quelle transformation subit l&rsquo;eau quand elle passe du solide au liquide ?<br \/>A) Condensation <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \ufe0f\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f32b.svg\"><br \/>B) Fusion <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\"\u2764\ufe0f\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/2764.svg\">  <br \/>C) Vaporisation <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f4a8.svg\">  <\/p>\n<p>3. Le caf\u00e9 que tu bois le matin est :<br \/>A) Une substance pure <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\"\u26aa\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/26aa.svg\"><br \/>B) Un m\u00e9lange <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f535.svg\"><img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f534.svg\"><\/p>\n<p>R\u00e9ponses:<\/p>\n<p>1- R\u00e9ponse B: L&rsquo;eau passe \u00e0 l&rsquo;\u00e9tat solide autour de 0\u00b0Con parle alors de gel ou cong\u00e9lation.<br \/>2- R\u00e9ponse B: La fusion fait passer un corps \u00e0 l&rsquo;\u00e9tat solide vers l\u2019\u00e9tat liquide.<br \/>3- R\u00e9ponse B : le caf\u00e9 est un m\u00e9lange car il a \u00e9t\u00e9 produit en dissolvant plusieurs substances dans l\u2019eau chaude (par exemple des extraits secs insolublesindispensable pour aromatiser votre boisson).<\/p>\n<p>L&rsquo;exercice \u00e9value les connaissances basiques sur les transformations des mati\u00e8res que les \u00e9l\u00e8ves ont apprises pendant le cours tout en favorisant leur participation active gr\u00e2ce \u00e0 la m\u00e9thode d&rsquo;\u00e9valuation par les pairs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Points importants du cours:1. Les mati\u00e8res peuvent changer d&rsquo;\u00e9tat: solide, liquide ou gazeux.2. Ces changements d&rsquo;\u00e9tats se produisent \u00e0 des temp\u00e9ratures sp\u00e9cifiques pour chaque mati\u00e8re: point de fusion et point d&rsquo;\u00e9bullition.3. Les m\u00e9langes : une mati\u00e8re peut \u00eatre pure ou bien un m\u00e9lange de plusieurs substances. Consignes pour l&rsquo;exercice:Choisis la bonne r\u00e9ponse et partage-la avec [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[8,17,5,4,318,1],"tags":[],"class_list":["post-8408","post","type-post","status-publish","format-standard","hentry","category-sciences","category-cm2","category-niveaux","category-matieres","category-pas-dadaptation-particuliere","category-exercices-pedagogiques-imprimables-et-gratuits"],"_links":{"self":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts\/8408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/comments?post=8408"}],"version-history":[{"count":0,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts\/8408\/revisions"}],"wp:attachment":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/media?parent=8408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/categories?post=8408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/tags?post=8408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}