General objective of this lecture is to present on Fractional Distillation. There are many Hydrocarbon compounds in Crude Oil and this complex mixture is separated into a simpler mixture. This simper mixture is made up of Fractions, groups of Hydrocarbons with similar carbon chain lengths. The Crude Oil is first heated to make it Evaporate, then it is allowed to cool at different temperatures, so that different Fractions Condense at different points. This process is called Fractional Distillation.