zamraanie
Zamraanie is the process by which a substance changes from a liquid to a solid as its temperature falls below its freezing point. It involves the removal of thermal energy and the release of latent heat of fusion as molecules arrange into a crystalline lattice. The exact freezing point depends on pressure and the presence of solutes or impurities; pure water freezes at 0°C at standard pressure, while solutions freeze over a range.
Mechanism: Nucleation is typically required: small solid clusters serve as seeds for crystal growth; in some
Types and methods: Natural freezing occurs in weather and climate when ambient temperatures drop. Industrial freezing
Applications: Freezing is widely used for food preservation, cryopreservation of biological materials, and materials science (including
Effects and challenges: Ice-crystal formation can damage cells and tissues; controlling crystal size is important for
See also: freezing point, latent heat of fusion, cryopreservation, frost, phase transition.