What are the steps in the process of freezing?
In physical science, freezing or solidification is the process in which a liquid turns into a solid when cold enough. The freezing point is the temperature at which this happens. Melting, the process of turning a solid to a liquid, is almost the exact opposite of freezing. All known liquids undergo freezing when the temperature is lowered with the sole exception of helium, which remains liquid at absolute zero and can only be solidified under pressure. For most substances, the melting and freezing points are the same temperature freezing is used in the food industry to quickly freeze perishable food items (see frozen food). In this case, food items are subjected to temperatures well below water’s melting/freezing point (273.15K or 0°C), causing the water inside the foods to freeze in a very short period of time. See supercooling for the further details of this process. Flash freezing techniques are also used to freeze biological samples fast enough that large ice crystals cannot form a
