What Is The Chemical Phenomenon Behind The Burning Of Liquids?

Liquids possess a strong tendency to burn when their molecules are free enough to chemically react with oxygen.  As a result, the resulting amalgam is highly combustible.

This highly inflammable property of liquids is brought to life by the involvement and application of heat, which acts as a catalyst in the chemical process.  The heat enables the molecules of the liquid to be activated in a more impetuous, a more aggressive motion, which results them to collide against each other at a tremendously high speed.  As a chemical corollary of the resulting jolt, the bonds that had held the molecules till then loosen and the molecules are freer of each other than they were before.  This facilitates the process of rearrangement for the molecules and eventually they escape from the liquid form to acquire an almost invisible gaseous state, thus mixing with the oxygen in the air and producing striking flames.