{"id":3460,"date":"2019-04-05T16:34:06","date_gmt":"2019-04-05T14:34:06","guid":{"rendered":"http:\/\/agora.xtec.cat\/iesribotiserra\/?p=3460"},"modified":"2019-04-08T10:39:49","modified_gmt":"2019-04-08T08:39:49","slug":"sublimacio-i-deposicio","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/iesribotiserra\/portada\/sublimacio-i-deposicio\/","title":{"rendered":"Sublimaci\u00f3 i deposici\u00f3"},"content":{"rendered":"<p style=\"text-align: justify;\"><strong>Aquesta setmana, els alumnes de 3r B hem apr\u00e8s dos nous canvis d\u2019estat: la sublimaci\u00f3, que \u00e9s el pas de s\u00f2lid a gas, i la sublimaci\u00f3 inversa (o deposici\u00f3), que \u00e9s el pas de gas a s\u00f2lid. El darrer dia hem fet una pr\u00e0ctica per observar aquests canvis d\u2019estat i la subst\u00e0ncia que hem utilitzat \u00e9s el iode, un element de la taula peri\u00f2dica.<\/strong><\/p>\n<p><a href=\"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/04\/IMG_20190405_120940.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-3461\" src=\"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/04\/IMG_20190405_120940-1024x768.jpg\" alt=\"\" width=\"1024\" height=\"768\" srcset=\"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/04\/IMG_20190405_120940-1024x768.jpg 1024w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/04\/IMG_20190405_120940-300x225.jpg 300w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/04\/IMG_20190405_120940-768x576.jpg 768w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/04\/IMG_20190405_120940-200x150.jpg 200w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2019\/04\/IMG_20190405_120940.jpg 1040w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p style=\"text-align: justify;\">Hem posat uns trossets de iode s\u00f2lid dins d&#8217;un vas de precipitats. L\u2019aspecte del iode \u00e9s rug\u00f3s i de color gris brillant. Hem tapat el vas de precipitats amb un vidre de rellotge i l\u2019hem posat a sobre de la flama. Hem posat un paper blanc darrera del vas de precipitats per poder veure millor els canvis que comen\u00e7aven a tenir lloc dins el vas de precipitats. De seguida s\u2019ha format un n\u00favol amb un to lil\u00f3s i, a mesura que passava el temps, el color s\u2019ha tornat m\u00e9s intens. Al mateix temps que aix\u00f2 passava, els trossets de iode de la base del vas han anat desapareixent. S&#8217;ha produ\u00eft la sublimaci\u00f3: el iode ha passat d\u2019estat s\u00f2lid a estat gas\u00f3s.<\/p>\n<p style=\"text-align: justify;\">Amb la flama encara encesa, hem col\u00b7locat una mica de gel a sobre del vidre de rellotge. A sota del vidre de rellotge s\u2019han comen\u00e7at a formar uns filets de color gris brillant. S&#8217;ha produ\u00eft la sublimaci\u00f3 inversa: el iode ha passat d\u2019estat gas\u00f3s a estat s\u00f2lid.<\/p>\n<p style=\"text-align: justify;\">Finalment, hem apagat la flama. S\u2019han format cristallets de iode tamb\u00e9 a les parets del vas de precipitats, i el n\u00favol de gas lila ha anat perdent intensitat fins a desapar\u00e8ixer.<\/p>\n<p><a href=\"https:\/\/photos.app.goo.gl\/iUo57Q2CuVdAc85R7\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-566\" src=\"http:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2018\/01\/google-photos-150x150.png\" alt=\"\" width=\"44\" height=\"44\" srcset=\"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2018\/01\/google-photos-150x150.png 150w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2018\/01\/google-photos-300x300.png 300w, https:\/\/agora.xtec.cat\/iesribotiserra\/wp-content\/uploads\/usu1672\/2018\/01\/google-photos.png 540w\" sizes=\"auto, (max-width: 44px) 100vw, 44px\" \/><\/a><strong><a href=\"https:\/\/photos.app.goo.gl\/iUo57Q2CuVdAc85R7\" target=\"_blank\" rel=\"noopener noreferrer\">Album de fotos<\/a><\/strong><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aquesta setmana, els alumnes de 3r B hem apr\u00e8s dos nous canvis d\u2019estat: la sublimaci\u00f3, que \u00e9s el pas de s\u00f2lid a gas, i la sublimaci\u00f3 inversa (o deposici\u00f3), que \u00e9s el pas de gas a s\u00f2lid. El darrer dia hem fet una pr\u00e0ctica per observar aquests canvis d\u2019estat i la subst\u00e0ncia que hem utilitzat [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3461,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[111,29],"tags":[220,217],"class_list":["post-3460","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curs-18-19-eso-i-batxillerat","category-portada","tag-curs-18-19","tag-practiques"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/posts\/3460","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/comments?post=3460"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/posts\/3460\/revisions"}],"predecessor-version":[{"id":3464,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/posts\/3460\/revisions\/3464"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/media\/3461"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/media?parent=3460"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/categories?post=3460"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesribotiserra\/wp-json\/wp\/v2\/tags?post=3460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}