{"id":4182,"date":"2017-05-22T14:10:55","date_gmt":"2017-05-22T12:10:55","guid":{"rendered":"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/?p=4182"},"modified":"2017-05-22T14:10:55","modified_gmt":"2017-05-22T12:10:55","slug":"tallers-a-la-iii-jornada-cientifica","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/mediambient\/tallers-a-la-iii-jornada-cientifica\/","title":{"rendered":"Tallers a la III Jornada Cient\u00edfica"},"content":{"rendered":"<p><a href=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/Riu-1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4370\" src=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/Riu-1.png\" alt=\"Riu\" width=\"785\" height=\"600\" srcset=\"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/Riu-1.png 785w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/Riu-1-300x229.png 300w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/Riu-1-768x587.png 768w\" sizes=\"auto, (max-width: 785px) 100vw, 785px\" \/><\/a><\/p>\n<p>El passat divendres 10 de mar\u00e7 es va celebrar a l&#8217;institut la <a href=\"https:\/\/www.youtube.com\/watch?v=qct5ofhI3PQ\">III Jornada Cient\u00edfica<\/a>\u00a0i alguns dels alumnes del Cicle Formatiu de Qu\u00edmica Ambiental vam col\u00b7laborar fent uns tallers als laboratoris de l&#8217;institut per als alumnes de segon de Batxillerat. Els nois i les noies, a la vegada que es divertien realitzant les diferents activitats, van poder aprendre nous aspectes sobre el Riu Llobregat.<br \/>\n<!--more--><\/p>\n<p>Vam realitzar diferents tallers als laboratoris de Qu\u00edmica, F\u00edsica i Microbiologia per\u00f2 tots al voltant de l&#8217;aigua del Riu Llobregat. Cadasc\u00fa de nosaltres havia de triar en quin laboratori volia estar i quin taller li agradaria realitzar als alumnes. A cada laboratori vam ser 4 alumnes i els nois de batxillerat van rotar per tots els laboratoris.<\/p>\n<p>A mi, em va tocar estar al laboratori de Qu\u00edmica i vaig decidir comparar l&#8217;aigua del Riu Llobregat amb aigua de l&#8217;aixeta i aigua destil\u00b7lada. Aquesta comparaci\u00f3 la vaig realitzar utilitzant el pH i la conductivitat, dues mesures molt usades en l&#8217;an\u00e0lisi d&#8217;aig\u00fces. Vaig omplir 3 vasos de precipitats amb cadascuna de les tres mostres aig\u00fces (Llobregat, aixeta i destil\u00b7lada) i per introduir-los el taller, vaig utilitzar tires semi-quantitatives de pH, les quals van servir per a que agafessin una aproximaci\u00f3 visual mitjan\u00e7ant els colors de les tires de com serien els resultats que obtindr\u00edem despr\u00e9s.<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/pH.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4373 size-medium\" src=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/pH-300x218.png\" alt=\"pH\" width=\"300\" height=\"218\" srcset=\"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/pH-300x218.png 300w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/pH.png 610w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Una vegada feta l&#8217;introducci\u00f3, els alumnes van comen\u00e7ar a analitzar les mostres d&#8217;una forma m\u00e9s quantitativa amb el pH-metre i el conduct\u00edmetre i, a trav\u00e9s de preguntes que els hi feia, descobrien les difer\u00e8ncies i similituds que tenien les tres aig\u00fces.<br \/>\nAlguns dels aspectes que m\u00e9s els van sorprendre van ser la difer\u00e8ncia tan gran de conductivitat que tenen l&#8217;aigua del riu i l&#8217;aigua de l&#8217;aixeta amb l&#8217;aigua destil\u00b7lada i que l&#8217;aigua destil\u00b7lada no tingui una conductivitat de zero degut a la seva auto-ionitzaci\u00f3.<\/p>\n<p>Per finalitzar el taller d&#8217;una forma diferent per\u00f2 relacionada amb el pH, vaig decidir ensenyar-lis els indicadors \u00e0cid-base utilitzant el blau de bromotimol. Al ficar unes gotes\u00a0d&#8217;aquest indicador a una mica de soluci\u00f3 d&#8217;\u00e0cid clorh\u00eddric, aquesta es torna de color groc per\u00f2, van veure com, al afegir-hi hidr\u00f2xid de sodi, arribava un moment que la soluci\u00f3 passava a color blau, aix\u00f2 significava que la soluci\u00f3 ara, era b\u00e0sica. Aix\u00ed vaig poder explicar-lis que s\u00f3n aquests indicadors els que utilitzem per saber que hem arribat al punt final durant les volumetries.<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/Indicadors.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-4374\" src=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/Indicadors-300x288.png\" alt=\"Indicadors\" width=\"300\" height=\"288\" srcset=\"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/Indicadors-300x288.png 300w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/Indicadors.png 596w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>N\u00far\u00eda<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>El passat divendres 10 de mar\u00e7 es va celebrar a l&#8217;institut la III Jornada Cient\u00edfica\u00a0i alguns dels alumnes del Cicle [&hellip;]<\/p>\n","protected":false},"author":137,"featured_media":4370,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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 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