How do eggs float?

。For a given object (i.e., the so-called egg), the greater the density of the medium (i.e., the density of water), the greater the buoyancy experienced. When the buoyancy is greater than the gravitational force on it, the egg begins to float, and when the egg is exposed to the water, the egg decreases in size and buoyancy until its buoyancy and gravity are back in balance, and the egg is still on the water.

If the raw egg floats in the water, it means that it is already bad and cannot be eaten, because the protein in the egg is damaged, a large amount of gas is produced, and part of the water in the egg will slowly evaporate from the small holes in the eggshell, and the weight of the egg will become lighter when the water evaporates, so it can float.

Generally speaking, eggs can float in salt water, and the principle is very simple, because the density of eggs is less than that of salt water, and if the eggs are placed in ordinary water, fresh eggs are mostly sinking.

The concentration of salt water should be high, for example, people can float in the Dead Sea, but they cannot float in fresh water, and the concentration of salt water needs to be large.

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Fresh eggs sink into the water, and the spoiled eggs float to the surface.

Because the specific gravity of fresh eggs is greater than that of water, and the specific gravity of bad eggs is smaller than that of water. Fresh eggs, which have very little air in them, have a greater specific gravity than water, so they can sink. Because the bad egg has been left for too long, on the one hand, his protein is rotten and produces a lot of gas; On the other hand, some of the water in the eggshell evaporates from the pores of the eggshell.

When the gas evaporates, the weight of the egg decreases, and the specific gravity decreases, so it naturally floats on the water.

At temperature 2 5, eggs can be stored for 40 days, in winter indoor can be stored for about 15 days, and in summer indoor at room temperature eggs can be stored for about 10 days. When eggs are past their expiration date, their freshness and nutritional content will be affected.

Fantasy Science City: What is the principle of the ups and downs of eggs.

1. The experimental principle of the egg floating is because the salt is dissolved in the water, and the buoyancy of the salt water is greater than that of the water, so the egg floats up. The force exerted by the upright upward movement of the fluid on an object immersed in a fluid is called buoyancy. Buoyancy refers to the difference (resultant) of the fluid pressure on each surface of an object in a fluid (liquid and gas).

2. The amount of buoyancy experienced by an object in a liquid is only related to the volume of its immersion in the liquid and the density of the liquid, and has nothing to do with the density of the object itself, the state of motion, the depth of immersion in the liquid, and other factors. In water, although objects denser than water will sink, such as stones and iron; Objects that are less dense than water, such as plastic and wood, will rise, but their buoyancy will not change.

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I heard that eggs can float in salt water. But it's very slow. You must need to use the stirring rod to stir the top of the water, it will slowly but not float to the big top, can only be supported to the distance of 1cm from Biribery, and even some are not enough to reach the distance of 1cm, the experimental procedure is very simple, prepare a transparent glass, a raw egg, some water, a small spoon, and some appropriate amount of salt, first fill the glass with a raw egg, on the road with an appropriate amount of water, stir, do not touch the raw egg, wait for 30 seconds, After that, the egg slowly moved 1cm away from the cup, indicating that the concentration of salt had exceeded the concentration of the egg.

When the specific gravity of the water exceeds the specific gravity of the egg, the egg will not sink to the bottom of the cup.

When the buoyancy reaches a certain level, the egg floats. Therefore, it can be concluded that the factors that affect the magnitude of buoyancy have a certain relationship with the density of the liquid.

When the top interface of a buoy does not touch the liquid, only the pressure acting upward on the bottom interface will produce buoyancy. As for an object located on the bottom surface of the container, this phenomenon is not much, because as long as there is a thin liquid film in between, the pressure can be transmitted, and the bottom surface will have upward pressure, and if there is a pressure difference between the upper and lower surfaces of the object, the object will be subject to buoyancy.

The density of the egg is less than that of the salt water, of course, after adding it, its density is larger, and the density of the egg is less than the strength of the salt water, which can make the egg float up.

Eggs will not float in clear water, but eggs can float in salt water, because the density of eggs is less than the density of salt water, so eggs will float, but when water is added to salt water, ten, the density of salt water will continue to decrease, and when the density of salt water is less than that of eggs, the egg will sink.

Do you understand?

Because the density of eggs is less than that of brine. So the eggs are able to float in the salt water.

In a certain concentration of brine, the density of eggs is less than that of brine floating.

Because the buoyancy of an egg is less than that of salt water