Organic chemistry: It is a sub division of chemistry that involves the scientific study of the structure, properties, and reactions of organic compounds and organic materials.

Organic compound: The main chemical components of living organisms are known as organic compounds . Organic compounds are molecules built around the element carbon (C).

Hydrocarbon: It is an organic compound consisting entirely of hydrogen and carbon.

Saturated compound: Hydrocarbon which contain no no double or triple bonds.

Unsaturated compound: Hydrocarbon which contain at least one double or triple bond.

Alkane: Hydrocarbons in which all carbons are connected by single bonds.

Alkene: A compound in which a C=C double bond is present.

Alkyne: A compound in which a C≡C triple bond is present.