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 % Add your content here
 
+\section{Elements and elementary substances}
+
+\section{Acids and bases}
+
+\section{Ions}
+
+\section{Ores and alloys}
+
+\section{Reactions}
+
+\section{Hydrocarbons and their Halogen derivatives}
+
+\section{Alicyclic compounds and aromatic compounds}
+
+\section{Alcohol, phenols, ketones and aldehyde}
+
+\section{Carboxylic acids and esters}
+
+\section{Amines, amides and nitriles}
+
+\section{Thiols and thioethers}
+
+\section{Macromolecule}
+
+\section{Plastics}
+
+\section{Organic compounds in everyday life}
+
 \end{document}