{"id":1675,"date":"2017-05-16T15:52:44","date_gmt":"2017-05-16T13:52:44","guid":{"rendered":"http:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/?p=1675"},"modified":"2017-05-16T15:52:58","modified_gmt":"2017-05-16T13:52:58","slug":"lalumnat-de-3r-deso-estudia-les-reaccions-quimiques","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/general\/lalumnat-de-3r-deso-estudia-les-reaccions-quimiques\/","title":{"rendered":"L’alumnat de 3r d’ESO estudia les reaccions qu\u00edmiques"},"content":{"rendered":"

A la mat\u00e8ria optativa de Laboratori<\/strong>, els alumnes de 3r d\u2019ESO <\/strong>seguim estudiant les reaccions<\/strong> qu\u00edmiques<\/strong>.<\/p>\n

Algunes formes de saber que s\u2019ha produ\u00eft una reacci\u00f3 qu\u00edmica \u00e9s si observem la formaci\u00f3 d\u2019un s\u00f2lid<\/strong> o el despreniment d\u2019un gas<\/strong>.<\/p>\n

A les \u00faltimes dues sessions vam dur a terme dues reaccions on vam poder observar aquests dos fen\u00f2mens.<\/p>\n

La primera reacci\u00f3 que vam estudiar va ser la de l\u2019hidr\u00f2xid de sodi <\/strong>() amb el sulfat de coure<\/strong> ().<\/p>\n

Vam necessitar dos vasos de precipitats amb aigua i vam dissoldre una cullerada d\u2019hidr\u00f2xid de sodi (transparent) i una cullerada de sulfat de coure en l\u2019altre (color blau).<\/p>\n

Quan vam afegir una mica de la soluci\u00f3 d\u2019hidr\u00f2xid de sodi sobre la dissoluci\u00f3 del sulfat de coure es va formar un s\u00f2lid de color blau amb l\u2019aparen\u00e7a del cot\u00f3 fluix de sucre de les fires.<\/p>\n

La reacci\u00f3 que t\u00e9 lloc \u00e9s la seg\u00fcent:<\/p>\n

En barrejar l\u2019hidr\u00f2xid de sodi () amb el sulfat de coure (), s\u2019obt\u00e9 el sulfat de sodi<\/strong> () i l\u2019hidr\u00f2xid de coure<\/strong> (), aquest \u00faltim \u00e9s el s\u00f2lid que es forma.<\/strong><\/p>\n

La segona reacci\u00f3 que vam dur a terme va ser la de barrejar zinc<\/strong> () amb \u00e0cid clorh\u00eddric<\/strong> ().<\/p>\n

Vam posar un tros de zinc en un tub d\u2019assaig i amb una pipeta vam afegir unes gotes d\u2019\u00e0cid clorh\u00eddric.<\/p>\n

R\u00e0pidament es van formar bombolles, com quan acabem de servir-nos en un got aigua amb gas.La reacci\u00f3 que t\u00e9 lloc \u00e9s la seg\u00fcent:<\/p>\n

A partir del zinc i l\u2019\u00e0cid clorh\u00eddric es forma clorur de zinc<\/strong> () i hidr\u00f2gen gas<\/strong> (), que \u00e9s el que observem amb les bombolles<\/strong>.<\/p>\n

Ha estat una sessi\u00f3 molt divertida i interessant!<\/p>\n

\"precip-3er\"<\/a><\/p>\n

\"zinchcl1-3er\"<\/a><\/p>\n

\"zinchcl2-3er\"<\/a><\/p>\n

\"zinchcl3-3er\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

A la mat\u00e8ria optativa de Laboratori, els alumnes de 3r d\u2019ESO seguim estudiant les reaccions qu\u00edmiques.
\nAlgunes formes de saber que s\u2019ha produ\u00eft una reacci\u00f3 qu\u00edmica \u00e9s si observem la formaci\u00f3 d\u2019un s\u00f2lid o el despreniment d\u2019un gas.
\nA les \u00faltimes dues sessions vam dur a terme… Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":1690,"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":[106,1,29],"tags":[],"class_list":["post-1675","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3eso","category-general","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/posts\/1675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/comments?post=1675"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/posts\/1675\/revisions"}],"predecessor-version":[{"id":1694,"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/posts\/1675\/revisions\/1694"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/media\/1690"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/media?parent=1675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/categories?post=1675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/colsagradafamilia-larapita\/wp-json\/wp\/v2\/tags?post=1675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}