Question #e7912

1 Answer
Mar 10, 2017


I would say because the energy is used differently:


When you give energy to a solid this energy is taken by the molecules to vibrate and we detect it by measuring an increase in temperature BUT the molecules are still bound together in the lattice to maintain the structure of the solid.

When you reach melting point the energy you supply is not used to increase the vibration of the molecules anymore (so no increase in temperature) but it is used to break the connections between the molecules in the lattice and change its state into a liquid.