Els alumnes de primer parlem del fred i ens preguntem com es fa el gel. Hem parlat que a partir de 0\u00ba, l\u2019aigua es gla\u00e7a i ho hem pogut comprovar posant aigua al congelador.
\nA l\u2019hivern, a vegades la vorera est\u00e0 gla\u00e7ada i hem observat que hi tiren sal. Per qu\u00e8? Qu\u00e8 passa si posem sal al gel?
\nAgafem dos gla\u00e7ons de la mateixa mida i els posem en dos recipients diferents. En un gla\u00e7\u00f3 hi posem sal i en l\u2019altre no. Observem que el que t\u00e9 sal, es fon molt m\u00e9s r\u00e0pid, i al cap d\u2019uns minuts el gla\u00e7\u00f3 s\u2019ha convertit en aigua, mentre que el que no hi hem posat sal, es desf\u00e0 m\u00e9s lentament.<\/p>\n
Us deixem un recull de fotos<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Els alumnes de primer parlem del fred i ens preguntem com es fa el gel. Hem parlat que a partir de 0\u00ba, l\u2019aigua es gla\u00e7a i ho hem pogut comprovar posant aigua al congelador.
\nA l\u2019hivern, a vegades la vorera est\u00e0 gla\u00e7ada i hem observat que… Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":32,"featured_media":0,"comment_status":"open","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,"footnotes":""},"categories":[10],"tags":[],"class_list":["post-20055","post","type-post","status-publish","format-standard","hentry","category-1r-i-2n"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/posts\/20055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/users\/32"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/comments?post=20055"}],"version-history":[{"count":1,"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/posts\/20055\/revisions"}],"predecessor-version":[{"id":20056,"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/posts\/20055\/revisions\/20056"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/media?parent=20055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/categories?post=20055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/escpompeufabra\/wp-json\/wp\/v2\/tags?post=20055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}