The process of converting liquid into a solid is known as solidification or freezing. This transition occurs when the temperature of a liquid is reduced to below its freezing point, causing the molecules within the liquid to lose energy and bond together in a more structured form. For example, when water freezes, it transforms into ice. Solidification is a key process in many natural and industrial applications, such as in the food industry for preserving products or in manufacturing processes that involve materials like metals and plastics.