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Add salt to the water. Add some salt to the brine until the density of the brine is greater than the density of the egg, and then the egg will float; 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.
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A small experiment with a chopstick, a glass of water, a pinch of salt, and an egg.
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In fact, this is also a way to test the quality of eggs, generally bad eggs will float on the water, but if it is a real stupid egg, it will also be half floating on the water, but these two kinds of floating are not a state, the stupid egg, is half floating on the water, but the part that feels sunk into the water is still relatively heavy, and the bad egg is the whole is more floating, aqui te amo.
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There are two ways to do it, the first is that the broken eggs can float on the water, and the second is that the hard-boiled eggs are also OK, if you don't believe it, you can try it, if you can't help it, please click thank you.
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The egg floats on the water, indicating that the egg is broken. In addition, if you add salt to the water to reach a saturated state. At this time, put in the eggs, and the eggs will float up.
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1. Put salt: Since the density of the egg is less than the density of the brine, the egg will float on top of the brine. 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, and the egg is immersed in salt water, the buoyancy is greater than the gravitational force, and the resultant force is upward, the egg floats, and the buoyancy decreases to equal to gravity, and the egg will float on it.
2. Sugar: Sugaring can also change the density of the water and make the eggs float to the surface.
3. Drip wax: increase the drainage volume of the egg, drip wax on the egg, the density of the wax is less than the density of water, if the wax is dripped on the egg, the gravity increase is not as fast as the buoyancy increases, so the egg can float.
Physical knowledge of objects floating on water with eggs:
The rise and fall in a liquid depends on the comparison of the buoyancy experienced by the object and the magnitude of gravity. Not the magnitude of buoyancy, nor the magnitude of gravity.
By changing the magnitude of gravity or buoyancy, the state of the object can be changed.
When f floats g, the object floats up, and the result of the float is floating.
When f floats g, the object sinks, and the result of sinking is sinking to the bottom.
When f floats g, the object is in a suspended or floating state (i.e., it remains in its original state) Note: The concepts of floating, floating, levitating, sinking, and sinking should be distinguished.
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This one is a mistake, and it doesn't boil at all.
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1. The easiest way is to add water to the water.
An excess of salt, which makes it denser, brings the eggs to the surface.
If the density of the egg is less than that of the water, the egg will not sink, but will float up. Adding a certain amount of salt to the water will increase the density, and the eggs will rise to the surface.
2. Adding sugar can also change the density of the water and make the eggs surface.
Add sugar directly to the water, and when the concentration of the sugar water is large, the eggs can float when you put them in.
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Here's how to make the egg float in the water and close it:Tools: water, eggs, drinking glasses, table salt, spoons.
1. Fill half a cup of water in a water cup and gently put the eggs into the water, usually the eggs will sink to the bottom of the water.
2. Put a spoonful of salt in the water, and you will find that the eggs slowly float up.
3. This is because after adding salt, the density of water increases, and the buoyancy of the egg is proportional to the density of water.
Precautions for making eggs float:1. If you see that the egg is floating in a suspended state, you can add more edible salt.
2. Raw eggs should be chosen, so that the effect of the test will be good.
3. If it is a boiled egg, you should add more edible salt to make the egg float.
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The floating egg experiment requires a chopstick, table salt, eggs, a clear cup, and water. Experimental procedure: take out the glass, pour about 3 4 water, put the egg in the water, the egg quickly sinks to the bottom of the cup; Continue to pour salt into the water and stir quickly with chopsticks to fully dissolve the salt in the water; The egg slowly floats from the bottom of the cup to the surface.
Examples of Science Experiments in Primary Schools (with detailed steps):
Experiment 1: Bouncing bubbles.
Materials: water, dish soap, glue, straw, gloves;
Experimental steps: 1. Prepare water and dish soap into a mixed solution in a ratio of 3:1, dip the solution with a straw, and blow bubbles, but the bubbles are easy to break;
2. Mix the glue and the mixed solution in a ratio of 1:2, and then dip the solution with a straw to blow out the bubbles. Touching the bubble with gloves not only makes it difficult to break the lease, but also bounces when touched by hand.
Experimental principle: The bubble in step 1 is explosive due to the evaporation of water, and it will become very sticky after adding glue, and the water is not easy to evaporate, and the strength of the bubble film increases, so it can jump on the back of our hands.
Experiment 2: Color change.
Experimental materials: purple cabbage, hot water, some cups, sugar, lemon, baking soda, alkaline noodles, white vinegar;
Experimental steps: 1. Shred or slice the purple cabbage, put it in a cup, heat it in water and soak it, after 10 minutes, only the water is left, and the purple cabbage is filtered out.
2. Prepare a glass of sugar water, lemonade, soda, alkaline water, white vinegar, and boiled water.
3. Pour the water soaked in red cabbage into sugar water, lemonade, soda, alkaline water, white vinegar and boiled water, this is the original colorless liquid, all have a new color, and the color is not the same.
Experimental principle: purple cabbage contains anthocyanins, when it encounters substances with different acids and alkalinities, a chemical reaction occurs, so it changes the color, on the whole, it is red when it encounters acidic substances, blue when it encounters alkaline substances, and purple when it encounters alkaline substances.
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It's not so easy to keep something suspended in water. This phenomenon can only occur when the weight of the object is equal to the weight of the water it discharges. The same amount of salt water is heavier than fresh water compared to fresh water.
In other words, the relative density of brine is relatively large. An egg can float in very thick salt water.
come, and in fresh water it will sink.
As long as there is enough salt in the water, no matter how big or small the eggs are, they will float on the salt water. Slowly pour fresh water down the walls of the bottle so that the eggs are suspended in the water.
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There are several ways to make the egg float on the water, which can be used to know the old man:
1.Salt method: add an appropriate amount of salt to the water, stir evenly and then put in the eggs, because the specific gravity of the brine is greater than the eggs, the eggs will float on the water.
2.Sugar method: Similar to the salt method, add an appropriate amount of sugar to the water, stir well, and then put in the egg, which can also make the egg float.
3.Decompression method: boil a cup of water, then let it cool to room temperature, put in the eggs and slowly pour out the water, let the water head and surface drop to the top of the egg, and the egg will rise to the surface due to the reduced pressure.
In short, the above methods are all achieved by changing the density and pressure of the water to make the egg float.
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