For a log to burn completely,there must be enough outside heat conducting into the log to continue the pyrolizing process.

Question

Quizplus · Accepted Answer

This statement is true. Pyrolysis is the process of thermal decomposition of organic materials in the absence of oxygen. In the case of burning a log, the heat from the flames induces pyrolysis within the log. As the decomposition process produces gases and other volatile compounds, these are released into the flames and burned. However, for the log to continue burning completely, there must be sufficient heat conducting into the log from the outside environment to sustain the pyrolysis process. Otherwise, the remaining material would simply smolder and go out.

For a Log to Burn Completely,there Must Be Enough Outside