Crude Oil Revision

Some useful revision videos on crude oil and its uses from Fuse School.

This video shows the forces of attraction between chains of hydrocarbons, the longer the chain the greater the force.  But it doesn't just happen end to end as the video suggests, rather across the whole molecule.

Short chains have fewer carbon atoms so there are attractions between the chains as a result less energy is needed to separate the molecules. Low boiling point.	Long chains have more carbon atoms so there are more attractions between the chains as a result a greater amount of energy is needed to separate the molecules. High boiling point.