Q.Are freezing point and melting point the same with respect to change of state? Comment.

[!TLDR] They describe the same physical temperature but opposite directions of change -- melting point (solid→liquid) and freezing point (liquid→solid) are numerically identical for a given substance/pressure. [!ANSWER] Numerically the same temperature; …

As defined in §7.8, the melting point of a solid is the temperature at which its solid and liquid states coexist in thermal equilibrium, describing the SOLID-TO-LIQUID transition; the freezing point of the corresponding liquid is exactly the same physical temperature, but describing the LIQUID-TO-SOLID (reverse) transition. For a given substance at a given pressure, these are numerically identical -- e.g. both the melting point of ice and the freezing point of water are 0 °C at one standard atmosphere -- because solid and liquid coexist in equilibrium at one and the same temperature; the only difference is which DIRECTION of change the name describes (heat flowing in vs heat flowing out at that temperature). So the …

Recall that melting and freezing points both describe the same solid-liquid equilibrium temperature, differing only in …

Assuming freezing must happen at a slightly lower temperature than melting (a common misconception from everyday experience with supercooling), when in f …