What is the term for the temperature at which a substance's solid and liquid states exist in equilibrium?

The term for the temperature at which a substance's solid and liquid states exist in equilibrium is the melting point. At this specific temperature, the solid form of the substance absorbs enough energy to overcome intermolecular forces, allowing it to transition into the liquid state. Conversely, the liquid can also lose energy and revert to the solid state, thus maintaining a balance between both phases.

This equilibrium is a fundamental concept in thermodynamics and physical chemistry, illustrating how substances behave under varying temperature conditions. Understanding the melting point is crucial for various applications, including materials science, engineering, and culinary practices, where temperature control is crucial for achieving desired states of matter.