Facts About Water

Freezing Point

The freezing point of water with sugar (for a solution with a molality of 0.8) is -1.6 degrees.

The freezing point of water with impurities largely depends on the amount and nature of the impurities that make up the aqueous solution.

The freezing point of water with glycerin depends on the concentration of the solution. A solution containing 80 ml of glycerin freezes at -20 degrees, with a decrease in glycerin content to 60 ml, the crystallization process begins at -34 degrees, and the start of freezing a 20% solution – minus five degrees . As you can see, there is no linear relationship in this case. For freezing a 10% glycerine solution, a temperature of -2 degrees is sufficient.

The freezing point of water with soda (meaning caustic alkali or caustic soda) paints an even more mysterious picture: a 44% caustic solution freezes at +7 degrees Celsius and 80% at +130.

Freezing Of Freshwater Bodies

The process of ice formation in freshwater reservoirs occurs in a slightly different temperature regime.

The freezing point of water in a lake, like the freezing point of water in a river, is zero degrees on the Celsius scale. The freezing of the cleanest rivers and streams does not start from the surface, but from the bottom, on which there are crystallization nuclei in the form of bottom sludge particles. In the beginning, driftwood and aquatic plants are covered with an ice crust. As soon as the bottom ice comes to the surface, the river freezes immediately.

Frozen water on Lake Baikal can sometimes cool to freezing temperatures. This only happens in shallow water; the water temperature in this case can be thousandths and sometimes hundredths of one degree below zero.

The temperature of Baikal water under the crust of the ice layer, as a rule, does not exceed +0.2 degrees. In the lower layers, it gradually rises to +3.2 at the bottom of the deepest basin.

Freezing Point Of Distilled Water

Does distilled water freeze? Recall that in order to freeze water, it is necessary to have some crystallization centers in it, these can be air bubbles, suspended particles, as well as damage to the walls of the container in which it is located.

Distilled water, completely free of impurities, has no crystallization nuclei and therefore freezing starts at very low temperatures. The initial freezing point of distilled water is -42 degrees. Scientists have managed to achieve hypothermia of distilled water to -70 degrees.

By gently tapping a bottle from the fridge, or by tossing a small piece of ice into it, you can show how instantly it turns into ice that looks like elongated crystals.

Distilled water: does this purified substance freeze or not under pressure? Such a process is only possible in specially created laboratory conditions.

Freezing Point Of Salt Water

Many factors influence which water freezes faster, hot or cold, but the question itself seems a bit odd. It is suggested, and it is known from physics, that warm water still needs time to cool to the temperature of comparable cold water to turn into ice. this stage can be skipped and accordingly it wins in time.

But the answer to the question of which water freezes faster – cold or warm – outside in frost, is known to every inhabitant of northern latitudes. In fact, scientifically it appears that cold water should in any case simply freeze faster.

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