Question

a scientist took and iron rod and a wooden rod and wrapped each of them in a piece of paper. these were then heated as shown below. it was found that the paper around the metal rod does not burn whereas the fire one around the wooden rod catches fire can you explain why

Answer 1

The concept behind it is that iron is a good conductor of heat while as wood is not. When you start to heat the paper, the heat quickly gets transferred to iron as it is a good conductor of heat. While as when you heat paper wrapped around wood burns because wood is not a good conductor of heat and the heat taken by paper doesn't get transferred to wood. Thus, paper burns because it gets heated to its burning point