{"id":394,"date":"2012-12-24T07:59:40","date_gmt":"2012-12-24T04:59:40","guid":{"rendered":"http:\/\/dorjegurung.com\/sciblog\/?page_id=394"},"modified":"2026-03-12T18:31:45","modified_gmt":"2026-03-12T18:31:45","slug":"f4-dancing-coin","status":"publish","type":"page","link":"https:\/\/www.dorjegurung.com\/sciblog\/igcse-chemistry\/form-4-de\/f4-dancing-coin\/","title":{"rendered":"F4 Dancing Coin"},"content":{"rendered":"\n<p class=\"has-text-align-center\"><strong><em>Background<\/em><\/strong><\/p>\n\n\n\n<p>Matter undergoes phase change when heated or cooled. Phase change therefore is accompanied by energy exchange and transformation. When phase change takes place in a closed container, changes in the physical properties and characteristics also accompany it.<\/p>\n\n\n\n<p>Resources:<\/p>\n\n\n\n<p><a title=\"State and Energy\" href=\"https:\/\/www.dorjegurung.com\/chemistry\/MYP_Chemistry\/M4_Matter_II_State&amp;Energy_files\/frame.htm\">M4 Chemistry Matter II: State and Energy<\/a>. Powerpoint slides on the relationship between state of matter and energy content of particles in a sample of the matter.<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong><em>The Discrepant Event<\/em><\/strong><\/p>\n\n\n\n<p>A coin with some saliva is placed at the mouth of a wine bottle containing some wine. The bottle then is placed inside a beaker with hot water. Watch the video to see what happens next.<\/p>\n\n\n\n<p><iframe title=\"Dancing Coin\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/X0JkEigLbPo?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n\n\n\n<p>And the question is: what is the explanation for what happens to the coin?<\/p>\n\n\n\n<p>Concepts involved:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"line-height: 16px\">heat transfer, boiling\/evaporation, pressure, expansion.<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Background Matter undergoes phase change when heated or cooled. Phase change therefore is accompanied by energy exchange and transformation. When phase change takes place in a closed container, changes in the physical properties and characteristics also accompany it. Resources: M4 Chemistry Matter II: State and Energy. Powerpoint slides on the relationship between state of matter [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":1294,"parent":639,"menu_order":4,"comment_status":"open","ping_status":"closed","template":"","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-394","page","type-page","status-publish","has-post-thumbnail","hentry"],"blocksy_meta":[],"jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P2Y7Kk-6m","_links":{"self":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages\/394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/comments?post=394"}],"version-history":[{"count":1,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages\/394\/revisions"}],"predecessor-version":[{"id":4197,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages\/394\/revisions\/4197"}],"up":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages\/639"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/media\/1294"}],"wp:attachment":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/media?parent=394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}