<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-13T07:38:24Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:2445/107785" metadataPrefix="oai_dc">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:2445/107785</identifier><datestamp>2025-12-04T20:53:38Z</datestamp><setSpec>com_2072_1057</setSpec><setSpec>col_2072_478796</setSpec><setSpec>col_2072_478917</setSpec></header><metadata><oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
   <dc:title>Cap a un millor coneixement de l'aigua i el seu món</dc:title>
   <dc:creator>Centellas Masuet, Francesc A.</dc:creator>
   <dc:creator>Centelles Serra, Josep Joan</dc:creator>
   <dc:creator>Dosta Parras, Joan</dc:creator>
   <dc:creator>Garcia Segura, Sergio</dc:creator>
   <dc:creator>González Azón, María del Carmen</dc:creator>
   <dc:creator>Granell Sanvicente, Jaime Ramón</dc:creator>
   <dc:creator>Gutiérrez i Currius, Albert</dc:creator>
   <dc:creator>Vallés Giménez, Elisa</dc:creator>
   <dc:creator>Xuriguera Martín, María Elena</dc:creator>
   <dc:subject>Química</dc:subject>
   <dc:subject>Aigua potable</dc:subject>
   <dc:subject>Experiments</dc:subject>
   <dc:subject>Batxillerat</dc:subject>
   <dc:subject>Chemistry</dc:subject>
   <dc:subject>Drinking water</dc:subject>
   <dc:subject>Experiments</dc:subject>
   <dc:subject>Baccalaureate (Secondary school educational programme)</dc:subject>
   <dc:description>The aim of this laboratory experiment, aimed at high school students, is to make a study on the characteristics of some samples of natural waters with different properties: pH, conductivity, presence of iron(III) and behavior with soap. In addition, the process of purifying water will be introduced to the students using some simple experiments in the laboratory.</dc:description>
   <dc:date>2017-03-03T10:06:58Z</dc:date>
   <dc:date>2017-03-03T10:06:58Z</dc:date>
   <dc:date>2017-02-24</dc:date>
   <dc:date>2017-03-03T10:06:58Z</dc:date>
   <dc:type>info:eu-repo/semantics/article</dc:type>
   <dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
   <dc:identifier>2013-1755</dc:identifier>
   <dc:identifier>https://hdl.handle.net/2445/107785</dc:identifier>
   <dc:identifier>668647</dc:identifier>
   <dc:language>cat</dc:language>
   <dc:relation>Reproducció del document publicat a: https://doi.org/10.2436/20.2003.02.152</dc:relation>
   <dc:relation>Educació Química. EduQ, 2017, num. 20 (2015), p. 54-62</dc:relation>
   <dc:relation>https://doi.org/10.2436/20.2003.02.152</dc:relation>
   <dc:rights>cc-by-nc-nd (c) Centellas Masuet, Francesc A. et al., 2017</dc:rights>
   <dc:rights>http://creativecommons.org/licenses/by-nc-nd/3.0/es</dc:rights>
   <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
   <dc:format>9 p.</dc:format>
   <dc:format>application/pdf</dc:format>
   <dc:publisher>Institut d'Estudis Catalans</dc:publisher>
   <dc:source>Articles publicats en revistes (Ciència dels Materials i Química Física)</dc:source>
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