Q:

# How long does water take to freeze in a freezer?

A:

The time it takes for water to freeze in a typical freezer varies depending on a number of factors. The first factor to consider is the amount of water being frozen.

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If two water glasses are placed in the freezer at the same time and one is filled only a third of the way, while the other is filled halfway, the one with less water freezes first. The size of the glass is a factor as well.

Another factor is the temperature that the water started at. If there are two glasses, and one is filled with cold water that has been chilled by an ice cube and the other glass is filled with hot water that has been boiled, and both are placed in the freezer at the same time, the water in the one that started out colder freezes faster.

The temperature of the freezer itself is yet another factor. If there are two glasses with the same amount of water in each and the liquid contained in them begins at the same temperature, then the external source of cold determines how long the freezing process takes. A very cold freezer causes the water to freeze faster than a freezer that is only moderately cold.

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## Related Questions

• A:

The speed at which water freezes varies greatly from one situation to the next. However, there are some primary variables from which a general estimate can be formed. The temperature of the water and its surroundings are the most important factors when determining the rate at which water freezes.

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• A:

Sea water freezes at 28.4 degrees Fahrenheit. Fresh water freezes at 32 degrees Fahrenheit. Water that is a saturated salt solution, which has as much salt as the water can hold, freezes at minus 6 degrees Fahrenheit.

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• A:

There are a number of different theories about why hot or boiling water can freeze faster than cold water in certain situations, including thermal contact from the warmer container. One of the more recent explanations indicates it has to do with the special nature of the hydrogen bonds in water.