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      <title>ESPERIMENTI DI SCIENZE by marlene roccuzzo</title>
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      <description>Candeggina, aceto e ossa di pollo</description>
      <language>en-us</language>
      <pubDate>2019-01-04 12:49:08 UTC</pubDate>
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         <title> L&#39; OSSO SI E&#39; SBRICIOLATO</title>
         <author>marlyrok</author>
         <link>https://padlet.com/marlyrok/3f3ths1a1a9b/wish/317414646</link>
         <description><![CDATA[<div>   </div>]]></description>
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         <pubDate>2019-01-04 12:50:00 UTC</pubDate>
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         <title> ESPERIMENTO    Che cosa succede se immergiamo un osso nel&#39;aceto?</title>
         <author>marlyrok</author>
         <link>https://padlet.com/marlyrok/3f3ths1a1a9b/wish/317416211</link>
         <description><![CDATA[<div>MATERIALE NECESSARIO:</div><div>-un osso di pollo;</div><div>-aceto;</div><div>-una vaschetta ;</div><div>-pinzette e guanti</div><div>PROCEDIMENTO:</div><div>Ho messo un osso di pollo  in una  vaschetta e le ho coperto con l’aceto. Dopo una settimana,  l' ho estratto con le pinzette, sciacquato sotto l’acqua e provato a piegarlo.</div><div>L' osso è diventato molle ma  flessibile, perchè </div><div>l'  acido acetico contenuto nell’aceto ha reagito con i <strong>SALI MINERALI DI CALCIO </strong>dell’osso ed  è rimasta soltanto l’osseina che ha reso l'osso elastico</div>]]></description>
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         <pubDate>2019-01-04 12:59:37 UTC</pubDate>
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         <title> ESPERIMENTO    Che cosa succede se immergiamo un osso  nella candeggina?</title>
         <author>marlyrok</author>
         <link>https://padlet.com/marlyrok/3f3ths1a1a9b/wish/317419505</link>
         <description><![CDATA[<div>   </div><div><strong>MATERIALE NECESSARIO</strong></div><div>-un osso di pollo;</div><div>-candeggina </div><div>-una boccia di vetro;</div><div>-pinzette e guanti</div><div><strong>PROCEDIMENTO:</strong></div><div>Ho messo l’osso in una boccia di vetro  e l'ho coperto con la candeggina. Dopo tre giorni, l'ho estratto delicatamente con le pinzette, sciacquato  e provato  a piegarlo. <br>L' osso si è spezzato perchè la candeggina ha eliminato la parte organica dell’osso cioè l'<strong>OSSEINA</strong>, lasciando solo i sali minerali: l’osso è  diventato duro, ma molto fragile.</div>]]></description>
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         <pubDate>2019-01-04 13:19:06 UTC</pubDate>
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         <title>L&#39;OSSO NELLA CANDEGGINA DOPO 2 GIORNI</title>
         <author>marlyrok</author>
         <link>https://padlet.com/marlyrok/3f3ths1a1a9b/wish/317471766</link>
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         <pubDate>2019-01-04 16:10:29 UTC</pubDate>
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         <title>VIDEO</title>
         <author>marlyrok</author>
         <link>https://padlet.com/marlyrok/3f3ths1a1a9b/wish/317472902</link>
         <description><![CDATA[<div>LA PREPARAZIONE DELL'ESPERIMENTO CON LA CANDEGGINA</div>]]></description>
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         <pubDate>2019-01-04 16:14:36 UTC</pubDate>
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         <title></title>
         <author>marlyrok</author>
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         <pubDate>2019-01-04 16:22:12 UTC</pubDate>
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         <title>VIDEO INIZIALE</title>
         <author>marlyrok</author>
         <link>https://padlet.com/marlyrok/3f3ths1a1a9b/wish/317476018</link>
         <description><![CDATA[<div><strong>ACETO E OSSO</strong></div>]]></description>
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         <pubDate>2019-01-04 16:25:48 UTC</pubDate>
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         <title>L&#39; OSSO NELL&#39; ACETO DOPO 7 GIORNI</title>
         <author>marlyrok</author>
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         <pubDate>2019-01-04 16:29:41 UTC</pubDate>
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         <title>L&#39; OSSO E&#39; FLESSIBILE ED ELASTICO</title>
         <author>marlyrok</author>
         <link>https://padlet.com/marlyrok/3f3ths1a1a9b/wish/317478241</link>
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         <pubDate>2019-01-04 16:35:56 UTC</pubDate>
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         <title>VIDEO FINALE</title>
         <author>marlyrok</author>
         <link>https://padlet.com/marlyrok/3f3ths1a1a9b/wish/317479710</link>
         <description><![CDATA[<div><strong>ACETO E OSSO</strong></div>]]></description>
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         <pubDate>2019-01-04 16:41:23 UTC</pubDate>
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         <title>VIDEO FINALE</title>
         <author>marlyrok</author>
         <link>https://padlet.com/marlyrok/3f3ths1a1a9b/wish/317483143</link>
         <description><![CDATA[<div>CANDEGGINA E OSSO</div>]]></description>
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         <pubDate>2019-01-04 16:55:23 UTC</pubDate>
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