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      <title>La química a través de la historia  by Lucas Mella</title>
      <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4</link>
      <description>línea de tiempo de la química a través de la historia </description>
      <language>en-us</language>
      <pubDate>2021-04-19 13:43:30 UTC</pubDate>
      <lastBuildDate>2023-02-15 15:23:21 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
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         <title>descubrimiento del fuego por hombres primitivos </title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433074455</link>
         <description><![CDATA[<div>&nbsp;</div>]]></description>
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         <pubDate>2021-04-19 13:44:12 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433074455</guid>
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      <item>
         <title>China (2000 a. C)</title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433163093</link>
         <description><![CDATA[<div>elaboraban la seda artificial, papel, pólvora, porcelana y técnicas de pintura sobre bronce, tela o madera</div>]]></description>
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         <pubDate>2021-04-19 14:00:15 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433163093</guid>
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      <item>
         <title>griegos 600 a. C</title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433258314</link>
         <description><![CDATA[<div>visión filosófica y especulativa</div>]]></description>
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         <pubDate>2021-04-19 14:17:41 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433258314</guid>
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         <title>Empédocles (490 a 430 a. C)</title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433273015</link>
         <description><![CDATA[<div>postulo que los elementos en el universo consistían en: tierra, aire, fuego y agua. Y las propiedades: seco, frío, caliente y húmedo.</div>]]></description>
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         <pubDate>2021-04-19 14:20:20 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433273015</guid>
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      <item>
         <title>Leucipo ( ? a 430 a. C) y  Demócrito  ( 460 a 370 a. C)</title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433347493</link>
         <description><![CDATA[<div>Demócrito era discípulo de Leucipo, hicieron la construcción mas importante al proponer su teoría atómica, en la cual señalan que toda la materia esta constituida por pequeñísimas partículas indestructibles (ósea partículas). </div>]]></description>
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         <pubDate>2021-04-19 14:33:41 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433347493</guid>
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         <title>Paracelso (1493 a 1541 d. C)</title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433396376</link>
         <description><![CDATA[<div>llevo los fundamentos de la química a la medicina, dejo el método experimental como medio para llegar al conocimiento.</div>]]></description>
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         <pubDate>2021-04-19 14:43:00 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433396376</guid>
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      <item>
         <title>Robert Boyle 1661 d. C</title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433419575</link>
         <description><![CDATA[<div>señalo que el objetivo de la química debía ser encontrar la diferencias entre sustancias, descubrió lo que conocemos como la ley de Boyle. </div>]]></description>
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         <pubDate>2021-04-19 14:47:27 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1433419575</guid>
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         <title>Lavoisier 1770 d. C</title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1456996521</link>
         <description><![CDATA[<div>refuto la teoría del flogisto explicando los procesos de combustión, respiración y calcinación desde el punto de vista de la oxidación. también inicio el uso de la balanza en química lo que conllevo al descubrimiento de leyes fundamentales como la ley de conservación de la materia.</div>]]></description>
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         <pubDate>2021-04-25 20:55:16 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1456996521</guid>
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         <title>1770 d. C a la actualidad</title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457011406</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-04-25 21:06:26 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457011406</guid>
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      <item>
         <title>Amadeo Avogadro </title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457011802</link>
         <description><![CDATA[<div>estudio de las moléculas y el comportamiento de los gases</div>]]></description>
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         <pubDate>2021-04-25 21:06:45 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457011802</guid>
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      <item>
         <title> Friedrich Wöhler</title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457014355</link>
         <description><![CDATA[<div>síntesis de úrea  </div>]]></description>
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         <pubDate>2021-04-25 21:08:42 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457014355</guid>
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         <title>Meyer y Mendeleiev </title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457018926</link>
         <description><![CDATA[<div>ordenación de los elementos químicos en la tabla periódica </div>]]></description>
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         <pubDate>2021-04-25 21:11:56 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457018926</guid>
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      <item>
         <title>August Kekulé </title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457021541</link>
         <description><![CDATA[<div>estudio de la tetravalencia&nbsp;del carbono y estructura del benceno </div>]]></description>
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         <pubDate>2021-04-25 21:13:36 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457021541</guid>
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      <item>
         <title>Le Chatelier </title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457024740</link>
         <description><![CDATA[<div>estudio del equilibrio químico </div>]]></description>
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         <pubDate>2021-04-25 21:15:49 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457024740</guid>
      </item>
      <item>
         <title>Arrhenius </title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457029558</link>
         <description><![CDATA[<div>postulación de la teoría de ácidos y bases </div>]]></description>
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         <pubDate>2021-04-25 21:19:06 UTC</pubDate>
         <guid>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457029558</guid>
      </item>
      <item>
         <title>Platón (427 a 347 a. C) y Aristóteles (384 a 322 a. C) </title>
         <author>lucasmella4884</author>
         <link>https://padlet.com/lucasmella4884/q843rlpebdbjhgt4/wish/1457034422</link>
         <description><![CDATA[<div>no estuvieron de acuerdo con la concepción atómica de la materia y postularon que la materia era continua.</div>]]></description>
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         <pubDate>2021-04-25 21:22:02 UTC</pubDate>
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