How to prove by a simple little experiment that there are many pores on the shell of chicken eggs

1. Experimental equipment: syringes, needles.

Method steps: prick the egg shell with a needle in a small eye, insert the needle of the syringe at the small eye, pay attention to the gap between the small eye and the needle, and try to be as dense as possible. Then use a syringe to slowly pump in through this little eye, increasing the pressure in the eggshell.

After a period of time, little by little liquid beads can be seen on the surface of the eggshell, indicating that there are pores on the eggshell.

2. Experimental equipment: beaker, 40-50 warm water.

Submerge the eggs in warm water at 40-50 degrees Celsius and see if there are small bubbles on the egg shell, indicating that there are pores on the egg shell.

It has been proved through experiments that there are pores on the egg shell, which allows the eggs to exchange gases during development and provide oxygen for embryonic development. Stimulate students' interest, make students actively participate in and solve problems, and promote students' broad-mindedness.

To prove the presence of small holes in the eggshell, we did a small experiment.

The eggshell is pricked with a needle in a small eye, a syringe is inserted from there, the egg white and yolk are extracted, and a tube of red ink or other colored water is sucked into the small eye, and then the syringe is used to pump air into the small eye. As the pressure inside increases, the red ink in the eggshell squeezes out of the small holes in the eggshell, and little by little red water droplets appear on the surface of the eggshell. When eating boiled eggs, break the blunt end, because the inside is empty, this is the air chamber.

The gas chamber stores the gas, which is entered through small holes in the eggshell.

Place the eggs in a beaker with sand and heat them so that liquid beads emerge from the surface of the eggs.

You can't just observe it with a microscope, so you don't have to be so troublesome.

Do you give a point? Is there wood? Is there wood? If there is, give a point.

First, use a needle to prick a small hole at one end of the egg, then use a syringe to pull out the egg white and yolk, and then inject some red ink into the shell.

2. Finally, use an empty syringe to inject air into the small hole. After a while, a lot of small water soo really popped up on the eggshell!

Principle: This phenomenon is due to the fact that there are many small pores on the surface of the eggshell, which are the "portals" for air to enter the eggshell, called "stomata", and an egg has about 7000 small pores. When the egg hatches into a chick, the air breathed by the fetal chick in the shell is through the stomata.

When we inject air into the eggshell with a syringe, the greater pressure squeezes out the red ink black of the eggshell from the pores, which creates the phenomenon of the egg sweating, but it is not that it actually sweats. --**, I hope it can help you.

The egg shell is secreted by the inner wall of the mother's fallopian tube, which is hard and has small holes, so it has a protective effect on the embryo inside the egg, and can also ensure that the embryo can be exchanged with the outside world for gas development. There is also a membrane inside it, which is selectively permeable and can prevent the loss of nutrients. The egg shell is the outer layer of protective tissue, but can transfer temperature to hatch the inner egg.

There are no pores. But eggs have air cells inside.

This one is definitely there, otherwise you would think about it, and the chicks breathe like that when they are still in their shells! It's just that we can't see the vents.

Yes, the eggs are not completely sealed, and the washed eggs must be eaten immediately or they will spoil.

Answer: Glue Four normal fertilized eggs Incubation conditions Four intact normal fertilized eggs, two of which are evenly coated with glue, and when the glue is dry, they are incubated under the same conditions together with the two eggs that are not coated with anything, and the fertilized eggs coated with glue do not hatch out, and the eggs that are not coated with glue hatch. Glued fertilized eggs do not hatch without adequate oxygen.

The stomata on the shell of an egg provide oxygen for the development of the egg.