Organic chemistry studies carbon-based compounds that may contain other elements like hydrogen, nitrogen, oxygen, phosphorus, silicon and sulfur. Carbon bonds can be single, double, or triple. Common organic compounds include hydrocarbons, alcohols, carboxylic acids, and polymers. Hydrocarbons consist of hydrogen and carbon and include alkanes, alkenes, and alkynes. Alcohols contain a hydroxyl group bound to carbon. Carboxylic acids contain a carboxyl group bound to carbon. Polymers are large molecules composed of repeating structural units called monomers connected by covalent bonds.

1. IES Auringis. Jaén. José Cayetano Bautista Expósito 4º ESO. Physics and Chemistry. Unit 9 (I). Organic chemistry (OCHEM) is the part of chemistry that studies carbon-based compounds. These compounds may contain any number of other elements, specially hydrogen but also, nitrogen, oxygen, phosphorus, silicon and sulfur. The carbon-carbon bond: A carbon-carbon bond is a covalent bond between two carbon atoms. It can be : single bond (C ― C) a bond composed of two electrons, one from each of the two atoms of carbon.

2. double bond (C=C) a bond composed of two pairs of electrons.

3. triple bonds (C ≡ C) a bond composed of three pairs of electrons. The most common organic compounds are: Hydrocarbons, alcohols, carboxylic acids and polymers.

4. IES Auringis. Jaén. José Cayetano Bautista Expósito 4º ESO. Physics and Chemistry. Unit 9 (I). Hydrocarbons ( hidr ocar buros ) are organic compounds consisting entirely of hydrogen and carbon. Depending on the bonds we can find , among others, the following compounds: