The change of state from solid to liquid is called melting. This process occurs when a solid absorbs enough energy, typically in the form of heat, to overcome the forces holding its particles in fixed positions. As the temperature increases, the particles vibrate more vigorously until they can move freely, transitioning into the liquid phase. The temperature at which this occurs for a substance is known as its melting point. Melting is a key concept in both thermodynamics and various practical applications, such as in the cooking and manufacturing industries.