{"id":760,"date":"2014-02-10T09:37:42","date_gmt":"2014-02-10T08:37:42","guid":{"rendered":"http:\/\/agora.xtec.cat\/iesdesales\/general\/practica-de-quimica-descarregues-electriques\/"},"modified":"2016-07-08T09:56:19","modified_gmt":"2016-07-08T08:56:19","slug":"practica-de-quimica-descarregues-electriques","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/iesdesales\/general\/practica-de-quimica-descarregues-electriques\/","title":{"rendered":"Pr\u00e0ctica de Qu\u00edmica: Desc\u00e0rregues El\u00e8ctriques"},"content":{"rendered":"<div>A la classe de Qu\u00edmica de 1r de Batxillerat hem comen\u00e7at el tema d&#8217;Estructura At\u00f2mica. &nbsp;Explicarem breument una pr\u00e0ctica que hem fet al laboratori sobre desc\u00e0rregues el\u00e8ctriques en un tub de gas a baixa pressi\u00f3. &nbsp;Si apliquem un voltatge molt alt al tub, podem veure una mena de raig que surt del c\u00e0tode i es dirigeix cap a l&#8217;\u00e0node: s\u00f3n els raigs cat\u00f2dics. Si apropem un iman al feix de raigs cat\u00f2dics, es desvia la traject\u00f2ria i aix\u00f2 demostra que est\u00e0 format per c\u00e0rregues el\u00e8ctriques negatives. Amb aquest experiment, el cient\u00edfic J. J. Thomson va arribar a la conclusi\u00f3 que raigs cat\u00f2dics eren part\u00edcules amb massa carregades negativament. Aquestes part\u00edcules que procedeixen de la mat\u00e8ria s\u00f3n els electrons, \u00e9s a dir, els electrons s\u00f3n part\u00edcules que formen part dels \u00e0toms.<\/div>\n<p>Oscar Prim i Camila P\u00e9rez.<\/p>\n<div>\n<p>Alumnes de Qu\u00edmica de 1r BAT.<\/p>\n<p><img decoding=\"async\" <img decoding=\"async\" src=\"http:\/\/agora.xtec.cat\/iesdesales\/wp-content\/uploads\/usu678\/2016\/07\/2014_0204_Raigs_catodics.jpg\" \/><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>A la classe de Qu\u00edmica de 1r de Batxillerat hem comen\u00e7at el tema d&#8217;Estructura At\u00f2mica. &nbsp;Explicarem breument una pr\u00e0ctica que hem fet al laboratori sobre desc\u00e0rregues el\u00e8ctriques en un tub de gas a baixa pressi\u00f3. &nbsp;Si apliquem un voltatge molt alt al tub, podem veure&hellip;  <a href=\"https:\/\/agora.xtec.cat\/iesdesales\/general\/practica-de-quimica-descarregues-electriques\/\" title=\"Read Pr\u00e0ctica de Qu\u00edmica: Desc\u00e0rregues El\u00e8ctriques\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","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,"footnotes":""},"categories":[1,29],"tags":[74,77],"class_list":["post-760","post","type-post","status-publish","format-standard","hentry","category-general","category-portada","tag-intraweb","tag-noticies"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/posts\/760","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/comments?post=760"}],"version-history":[{"count":2,"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/posts\/760\/revisions"}],"predecessor-version":[{"id":1821,"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/posts\/760\/revisions\/1821"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/media?parent=760"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/categories?post=760"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesdesales\/wp-json\/wp\/v2\/tags?post=760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}