What does the rise and fall of eggs have to do with salt? 20

The density (specific gravity) of the raw egg is greater than that of water, so it sinks.

If the density of the brine is greater than that of the egg, the egg will rise.

If you fill the brine with clean water, the density will decrease, and the egg may sink to the bottom again.

The brine with the same volume as the egg is heavier than the egg, that is, the brine is heavier than the egg, because the salt water has a large specific gravity, when the salt content of the water exceeds 30%, the object in the salt water will float, just like the Dead Sea contains a lot of salt, so the object will float in the Dead Sea. ”

It depends on the amount of salt you add, when the density of the liquid is greater than the density of the egg, it will float, if the density is equal to the egg, then it will be suspended in the liquid, if it is less than the density of the egg, it will still be calm.

Reason: f (buoyancy) = p (density of liquid) * newton kg * v (volume of liquid dispelled by the object, i.e. volume of the object).

Since only the density will change, and the density = mass volume, as long as enough salt is added to increase the mass of the liquid, the density will increase.

The density of salt is greater than that of water, pour a large amount of salt into the water, so that the density of the egg is smaller than that of the brine, and the gravity of the egg is less than the gravity of the brine according to g=mg; According to the g=f float when floating or suspended, it can be seen that the buoyancy of the egg is less than the buoyancy of the salt water, so the egg can float in the salt water.

In the same way, salt water is denser than water from water, which is why it is easier to float in seawater. For example, the Dead Sea, because it has more salt, and people can float up on it. In addition, there are many such examples.

Eggs sink and fall. Method:

Put a glass of water and a cup of strong salt water, put an egg in each, sink and float. Due to the specific gravity of the egg, it sinks in general water; The specific gravity of the brine can reach, and the egg will float when it is put in.

Note: Modified eggs that are too old may have a lower specific gravity due to the enlargement of the air chamber, so they may also float in clear water; The salt water may not sink if it is too thin.

Gravity relationship! The specific gravity of brine is greater than that of eggs! The egg will float! The specific gravity of brine is less than that of eggs! The egg sinks! If the two have equal proportions! As a general rule, eggs can stay anywhere in the salt water!

Ordinary water is less dense than eggs, so eggs sink to the bottom; When salt is added to the water, the density of the water increases: when the density of the water is equal to the density of the egg, the egg is suspended in the water; When the density of the water is greater than that of the egg, the egg will float on the surface of the water.

Sink and float depends on how much salt you add, adding salt to the water can increase the density of the water, the more salt you add, the greater the density, the greater the buoyancy, until the buoyancy is equal to or greater than the gravity of the water, and the egg floats.

Because the higher the salt content, the more buoyant the water is, so you add a lot of water and then float back.

will hang. Because the density of water is less than that of eggs.

The density of brine is greater than that of eggs.

Yes, it has to do with the density of the salt, but it also has to do with the quality of the eggs.

will levitate. Because the density of the egg is greater than or equal to the density of the brine.

will be suspended because the density of the brine is not less than that of the egg.

It will be suspended and the salt water is dense.

Experiment: Immerse one shelled egg in a large-diameter glass filled with water. When I let go of my hand, I found that the egg was slowly sinking to the bottom of the cup.

Remove the eggs and add salt to the water to make a salt solution with higher concentration. Then submerge the egg in the saline solution, and when you release your hand, the egg slowly floats.

Analysis: The floating and sinking of an object depends on the relationship between the gravity and buoyancy exerted on it. The volume of an object immersed in a liquid is the volume of the liquid it distributes, and according to Archimedes' principle, the relationship between the density of an object and the density of a liquid can correspond to the relationship between gravity and buoyancy.

Because the density of the egg is slightly higher than that of clear water, when the egg is immersed in clear water, the gravity is greater than the buoyancy, so the egg will sink. When submerged in salt water, the egg will float as the brine is denser than the egg's density and the gravitational force is less than buoyancy.

Whether it floats or sinks depends on the amount of salt in the water, if the salt is put too little, the egg will sink, and vice versa, the egg will float. The eggs float in the brine because the density of the brine is higher than that of the eggs; If you add a large amount of water to the brine, the density of the brine is less than that of the egg, and the egg will sink.

Density is a measure of the mass within a specific volume, density is equal to the mass of an object divided by the volume, which can be expressed by the symbol (pronounced rho), in the International System of Units and the Chinese legal unit of measurement, the unit of density is kilograms per cubic meter, and the symbol is kg m3.

Generally speaking, no matter what substance it is in, no matter what state it is in, with the change of temperature and pressure, the volume or density will also change accordingly. The relationship between the three physical quantities of temperature t, pressure f, and density (or volume) is called the equation of state. The volume of a gas varies significantly depending on the pressure it is subjected to and the temperature it is subjected to.

If its temperature does not change, the density is proportional to the pressure; If its pressure is constant, the density is inversely proportional to the temperature. For general gases, if the density is not large and the temperature is far away from the liquefaction point, its volume changes with pressure and is close to the ideal gas; For gases with high density, the above equation of state should also be appropriately modified.

Regarding the question of whether raw eggs float or sink in salt water, it depends on the concentration of salt water. The concentration of saline is very low, below the concentration of normal saline, and the egg will sink.

Usually, the concentration of brine will be very high, and the eggs will float. This is why pickled eggs are also eggs floating.

Egg Float Experiment in Salt Water 1

Egg Float Experiment in Salt Water 2

The reason why eggs float when you put them in salt water is that the density of salt water is greater than that of eggs, so you will float when you put eggs in salt water. If you add some salt to the brine, when the density of the brine is greater than the density of the egg, the egg will float again; If you add some water to the brine, the density of the brine will continue to decrease, and when the density of the brine is less than the density of the egg, the egg will sink.

The relationship between binding force and motion explains that when an egg is submerged in water, it experiences less buoyancy than gravity, so the egg sinks. When the egg is immersed in salt water, the buoyancy is greater than the gravity, so the egg will float, and when the buoyancy and gravity are equal, the egg will float in one position and not move, which is the balance of gravity and buoyancy.

Generally speaking, whether the substance sinks in the water depends on the specific gravity of the substance, if the specific gravity is greater than the water, it will sink, and if it is smaller than the water, it will float, which is actually related to the fact that the egg is put into the salt water, which is related to the density.

Raw eggs are placed in salt water, if the salt is less, then the raw eggs will sink to the bottom, and vice versa, because the density of salt water is smaller than that of eggs. The salt is no more, no less, and it will be suspended because the density of the brine is the same as that of an egg. It floats when there is a lot of salt because the density of salt water is greater than that of eggs.

Float up. First of all, when you put an egg in a glass filled with fresh water, the egg quickly sinks to the bottom of the water, and at the same time the water level in the cup rises, and the volume of the water level rises is equal to the volume of the egg. When you take out the extra water and weigh it, you will find that the mass of this water is smaller than that of an egg.

Then, you put another egg in a cup filled with thick salt water, and the egg floats. At this point, when you pour out the brine equal to the volume of the egg and weigh it, you will find that the brine is heavier than the egg.

Generally speaking, whether the substance sinks in the water depends on the specific gravity of the substance, the specific gravity greater than the water will sink, and the smaller than the water will float, the so-called density refers to the mass of the substance and the mass of the same volume of water at 4 The ratio obtained by comparison. Since eggs are denser than fresh water, eggs sink in fresh water, and the density of salt water is greater than that of eggs, so eggs can float in salt water.

Raw eggs are placed in salt water, which is floating in salt water, not precipitated in salt water, because the specific gravity of eggs is less than the specific gravity of salt water, so the eggs will be suspended in salt water, instead of sinking under salt water, when the specific gravity of the object is greater than the specific gravity of salt water, the object will precipitate under salt water, which is the law of the sinking and floating of objects.

I think it's floating, not sinking. Because raw eggs do not have a large proportion of salt water. So he can't sink. If it's pure water. He will sink. If it doesn't sink, it means that the egg is stink.

When raw eggs are placed in salt water, they may appear in three states, sinking, suspended, and floating. Depends on the density of eggs and brine.

It depends on the concentration of the brine.

If the concentration is relatively low, it is generally sinking.

If the concentration of brine is high, the eggs will float.

float because the density of the water becomes larger. Just like seawater, many floating objects in the sea are actually high in salt.

Since the density of the egg is less than that of the brine, the egg will float on top of the brine.

Upgraded ones are put in a certain percentage of salt water. It's floating. Because the salt water is buoyant, it floats on it.

Because the salt particles can increase the friction, and at the same time, the salt grains will form a stable triangular support with the apex of the egg sphere, and then the egg will be clumped.

The experimental principle of salt making eggs stand: the fine particles in the salt rub against the surface of the egg to produce friction; At the same time, the bottom end of the egg and the salt particles form a stable support on the tabletop, which simply increases the contact area between the egg and the tabletop, and the contact surface is horizontal.

The center of gravity of the egg is on the same line as the fulcrum of the entire support structure, so the egg can stand without falling. If you replace the salt with white sugar or sand, the eggs will also stand up.

Gravity and buoyancy, buoyancy is equal to the density of the liquid * g * volume of the egg, by adding salt to the water, increasing the density of the water, the egg will rise from the bottom of the water. In terms of the relationship between force and motion: when the egg is immersed in water, its buoyancy is less than the gravitational force, and the resultant force is downward, so the egg sinks; When the egg is immersed in salt water, its buoyancy is greater than the gravitational force, and the resultant force is upward, and the egg floats upward, and rises to a part of the volume to expose the liquid surface, and the buoyancy decreases to the same as the gravity, and the egg floats there.

Materials for experiments: large glasses, table salt, spoons, eggs.

Step 1: Pick up the kettle, pour half a glass of water, then put the egg in the water, and the egg will slowly sink into the cup or stay at the bottom.

Step 2: Put 5 spoons of salt in a row, the egg floats up slightly, and put 3 spoons of salt in a row, the egg changes from lying horizontally to standing upright, and the area touching the bottom of the cup becomes smaller.

Step 3: Take out the eggs from the stove, stir the salt water with chopsticks, the salt at the bottom of the cup is basically melted, and then put the eggs in, the eggs keep floating up and down, and they will be messy for a while, and they will not move in the middle of the cup of water.

Step 4: Add 3 more tablespoons of salt, the egg gradually rises to the surface of the water, the top of the egg occasionally emerges from the water, press the egg down with your fingers, release your fingers, and the egg returns to the water.

In terms of the relationship between force and motion: when the egg is immersed in water, its buoyancy is less than the gravitational force, and the resultant force is downward, so the egg sinks; When the egg is immersed in salt water, its buoyancy is greater than the gravitational force, and the resultant force is upward, and the egg floats upward, and rises to a part of the volume to expose the liquid surface, and the buoyancy decreases to the same as the gravity, and the egg floats there.

Since the gravitational force of an egg is equal to the average density of the egg multiplied by the volume of the egg multiplied by the acceleration due to gravity; Whereas, the buoyancy experienced by an egg when it is submerged in a liquid is equal to the density of the liquid multiplied by the volume of the egg and then multiplied by the acceleration due to gravity. Therefore, to compare the relationship between buoyancy and gravity, you can also directly compare the average density of eggs and the density of liquids. The average vertical density of chicken eggs is greater than that of water, so when immersed in water, the buoyancy is less than the gravity and sinks; When the average density of the eggs is less than that of the salt water, the buoyancy of the eggs immersed in the salt water is greater than the gravitational force and floats until they float.

From the above solution, you should know that not all eggs float in the brine: when the average density of the eggs is greater than the density of the brine, the eggs will sink to the bottom of the brine.