Question

If you put one end of a rod of metal in the hot solutions you can feel the heat at other end. what does it mean? What is this property of metals called?

Answer 1

The property is called Conduction. Conduction is the flow of heat through a substance. Heat flows of its own accord through a body from a hot region to a cool region. The heat movement continues as long as a temperature difference exists and stops only when entire substance is of the same temperature. If one end of an iron rod is held in a fire, the other end soon becomes hot. The heat energy moves down the rod from the hot end to the cool end and stops when the entire rod is of the same temperature. Its behavior is similar to the behavior of water in flowing from a higher level to a lower level until all is at the same level — one possible reason why heat was once viewed as a fluid. According to the Kinetic Theory, heat is a form of energy, the kinetic energy of the random motion of molecules. In the warmer regions of a substance the molecules have more energy and vibrate more vigorously. When heat moves from a warmer region to a cooler region the molecular energy is passed along from molecule to molecule. Presumably, by collisions with adjacent molecules, energy is passed on, molecule by molecule.