&lt;p&gt;&lt;span style=&quot;background-color: rgb(255, 255, 0);&quot;&gt;Les esp&egrave;ces chimiques&lt;/span&gt;&lt;/p&gt;&lt;p&gt;I) Notion d'esp&egrave;ce chimique&lt;/p&gt;&lt;p&gt;1) D&eacute;finition&amp;nbsp;&lt;/p&gt;&lt;pre style=&quot;background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-size:11.0pt;font-family:&amp;quot;Cambria&amp;quot;,&amp;quot;serif&amp;quot;;mso-ascii-theme-font:
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major-latin;mso-hansi-theme-font:major-latin;mso-bidi-font-family:&amp;quot;Times New Roman&amp;quot;;
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