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      <title>HISTORIA DE LA QUÍMICA by ANA PAULA LUIS LOPEZ</title>
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      <description>EQUIPO 3</description>
      <language>en-us</language>
      <pubDate>2021-08-03 13:20:08 UTC</pubDate>
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         <title>PREHISTORIA 500.000 a.C</title>
         <author>lula040527</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667819816</link>
         <description><![CDATA[<div>DESCUBRIMIENTO DEL FUEGO&nbsp;<br>Ana Paula</div>]]></description>
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         <pubDate>2021-08-03 13:30:29 UTC</pubDate>
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      <item>
         <title>Edad Moderna- Alquimia </title>
         <author>lexinto500</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667824541</link>
         <description><![CDATA[<div>El objetivo <strong>de</strong> la <strong>alquimia</strong> era el conocimiento sobre la transmutación <strong>de</strong> la materia, mezclado con motivaciones consideradas religiosas o esotéricas</div>]]></description>
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         <pubDate>2021-08-03 13:35:09 UTC</pubDate>
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      <item>
         <title> 1702</title>
         <author>dannamarin2711</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667827133</link>
         <description><![CDATA[<div>buscaba dar una explicación al proceso de combustión a través de la existencia de una sustancia que tienen los cuerpos susceptibles de sufrir una combustión llamada <strong>flogisto</strong>, cuya presencia sería la que provocaría que el objeto ardiera</div>]]></description>
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         <pubDate>2021-08-03 13:37:45 UTC</pubDate>
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      <item>
         <title>Edad Contemporánea </title>
         <author>lexinto500</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667828640</link>
         <description><![CDATA[<div>Descubrimiento del átomo</div>]]></description>
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         <pubDate>2021-08-03 13:39:20 UTC</pubDate>
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      <item>
         <title>III-I a.C</title>
         <author></author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667829774</link>
         <description><![CDATA[<div>interpretaciones griegas de la materia, los 4 elementos de Aristóteles.<br>Grecia</div>]]></description>
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         <pubDate>2021-08-03 13:40:24 UTC</pubDate>
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      <item>
         <title>1869</title>
         <author>lula040527</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667832065</link>
         <description><![CDATA[<div>Mendeleyév publica su tabla periódica<br>Ana Paula&nbsp;</div>]]></description>
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         <pubDate>2021-08-03 13:42:39 UTC</pubDate>
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         <title>2.000 a.C</title>
         <author>lula040527</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667834540</link>
         <description><![CDATA[<div>China descubre el electromagnetismo&nbsp;<br>Ana Paula</div>]]></description>
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         <pubDate>2021-08-03 13:45:01 UTC</pubDate>
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         <title>EDAD CONTEMPORANEA 1789</title>
         <author>jeshua149375210</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667834827</link>
         <description><![CDATA[<div>Descubrimiento "ley de conservación de materia"&nbsp;<br>Jaime<br>En toda reacción química la masa se conserva, es decir, la masa total de los reactivos es igual a la masa total de los productos</div>]]></description>
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         <pubDate>2021-08-03 13:45:20 UTC</pubDate>
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      <item>
         <title> ANTIGUEDAD 8.000 a.C</title>
         <author>lula040527</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667837833</link>
         <description><![CDATA[<div>Civilizaciones antiguas desarrollan la fermentación&nbsp;<br>Ana Paula</div>]]></description>
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         <pubDate>2021-08-03 13:48:21 UTC</pubDate>
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      <item>
         <title>Descubrimiento de nuevos metales </title>
         <author>lexinto500</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667839178</link>
         <description><![CDATA[<div>&nbsp;Entre finales del siglo XVIII y principios del XIX&nbsp; elementos nuevos tales como el uranio, el circonio, estroncio, titanio, cromo, berilio, teluro, cerio, iridio, osmio, litio, silicio y vanadio</div>]]></description>
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         <pubDate>2021-08-03 13:49:43 UTC</pubDate>
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      <item>
         <title>1774</title>
         <author></author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1667844646</link>
         <description><![CDATA[<div>Joseph Priestley descubrió el aire " desflogisticado"<br>grecia</div>]]></description>
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         <pubDate>2021-08-03 13:55:05 UTC</pubDate>
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      <item>
         <title>DESCUBRIMIENTO DEL ELECTRÒN</title>
         <author>jeshua149375210</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668834606</link>
         <description><![CDATA[<div>&nbsp;En 1897, Joseph John Thomson descubrió el electrón, usando un tubo de rayos catódicos.&nbsp;<br>Jaime</div>]]></description>
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         <pubDate>2021-08-04 12:17:38 UTC</pubDate>
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      <item>
         <title>Teoría Atómica 1808</title>
         <author>jeshua149375210</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668860271</link>
         <description><![CDATA[<div>&nbsp;John Dalton establece la teoría que los elementos atómicos consisten en pequeñas partículas llamadas átomos.&nbsp;<br>Jaime</div>]]></description>
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         <pubDate>2021-08-04 12:49:33 UTC</pubDate>
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      <item>
         <title>Transforma la electricidad Químicos 1807 - 1810</title>
         <author>jeshua149375210</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668863337</link>
         <description><![CDATA[<div>&nbsp;Humphry Davy descubre que la electricidad se transforma productos químicos. Él utiliza una pila eléctrica.<br>Jaime</div>]]></description>
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         <pubDate>2021-08-04 12:53:35 UTC</pubDate>
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      <item>
         <title>1709</title>
         <author>lula040527</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668888394</link>
         <description><![CDATA[<div>Daniel Gabriel Fahrenheit fabrica el termómetro de mercurio.<br>Ana Paula</div>]]></description>
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         <pubDate>2021-08-04 13:18:13 UTC</pubDate>
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      <item>
         <title>Síntesis de la urea 1828</title>
         <author>jeshua149375210</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668912077</link>
         <description><![CDATA[<div>&nbsp;Friedrich Woehler accidentalmente sintetiza urea a partir de materiales inorgánicos, lo que demuestra que sustancias producidas por seres vivos pueden ser reproducidos con sustancias inertes&nbsp;<br>Jaime</div>]]></description>
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         <pubDate>2021-08-04 13:41:11 UTC</pubDate>
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      <item>
         <title>La Petroquimica-1859</title>
         <author>dannamarin2711</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668912402</link>
         <description><![CDATA[<div>Se establece el primer pozo de petróleo comercial<br>Danna</div>]]></description>
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         <pubDate>2021-08-04 13:41:28 UTC</pubDate>
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      <item>
         <title>1780</title>
         <author></author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668916421</link>
         <description><![CDATA[<div>leyes de termoquímica.<br>Grecia</div>]]></description>
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         <pubDate>2021-08-04 13:45:29 UTC</pubDate>
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      <item>
         <title>2004</title>
         <author></author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668921094</link>
         <description><![CDATA[<div>ingeniería genética, células madre<br>Grecia</div>]]></description>
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         <pubDate>2021-08-04 13:49:42 UTC</pubDate>
         <guid>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668921094</guid>
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      <item>
         <title>1850</title>
         <author>lula040527</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668923267</link>
         <description><![CDATA[<div>Cloración de agua por John Snow.<br>Ana Paula</div>]]></description>
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         <pubDate>2021-08-04 13:51:54 UTC</pubDate>
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      <item>
         <title>1896</title>
         <author>lula040527</author>
         <link>https://padlet.com/lula040527/pgedbjpg33w0r0c2/wish/1668926936</link>
         <description><![CDATA[<div>La radioactividad fue descubierta por el científico francés Antoine Henri.&nbsp;<br>Ana Paula</div>]]></description>
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         <pubDate>2021-08-04 13:55:05 UTC</pubDate>
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