What is the term for the process of changing from a solid to a liquid?

The process of changing from a solid to a liquid is known as melting. This occurs when a solid absorbs heat energy, causing its particles to vibrate more vigorously and eventually break free from their fixed positions. As a result, the solid transitions into the liquid state, where the particles are more mobile and less structured than in the solid form. This phenomenon is significant in understanding phase changes and the behavior of materials under varying temperature conditions.