Use chemical knowledge and real life to talk about the usefulness of NaCl in life at least four poi

Salt is not only an indispensable condiment in people's daily life, but also one of the important substances to maintain the normal metabolism of the human body. As for the use of salt, people are generally limited to the understanding of the seasoning of table salt, and the understanding of its other uses is not enough, so I have conducted research on various uses of salt by means of interviews and research and data review.

1. The disinfection purpose of salt water.

Once, I was playing at a neighbor's house, and it happened that their pigs were sick and called in a veterinarian. After the veterinarian saw the pig, he removed the syringe and prepared it for injection. When he was about to sterilize the needles, he realized that he had forgotten to bring alcohol.

He instructed his master to take out some salt, which he diluted into salt water, which he had disinfected instead of alcohol. I asked him, "Can this salt water be disinfected?"

He said: "Of course you can, don't underestimate this salt water, in the past, the army lacked disinfectants, so this salt water was used to disinfect." His words reminded me of what I had read in books about the War of Resistance Against Japanese Aggression, when our Eighth Route Army troops often used salt water to disinfect due to lack of medical care and medicine.

When Dr. Bethune operated on the wounded, he also disinfected them with saline.

2. Salt is an important substance for maintaining human life.

Salt is closely related to maintaining the normal metabolism of the human body and maintaining the acid-base balance of body fluids, and it is a necessary condition for maintaining the life of the human body. If the human body does not consume salt for several days, it will be weak, the body's resistance will be reduced, and then various diseases will occur. For example, during the War of Resistance Against Japan, many Red Army troops seriously affected their combat capability precisely because of the lack of salt.

Another example is the white-haired girl in the movie, who is also short of salt because she only eats wild fruits in the mountains all year round, and as a result, she is full of gray hair. In the movie "Shining Red Star", Pan Dongzi used his wisdom to avoid the enemy's search for salt for the mountain guerrillas, and finally skillfully transported the salt up the mountain.

3. Medical uses of salt.

1) The normal saline prepared with distilled water and refined salt is commonly used to rescue dying patients with serious fluid loss and blood loss. (2) This kind of normal saline is also the most commonly used nutrient infusion in hospitals. (3) Inhalation with an aqueous solution of one to two percent of salt can lead to bronchitis.

4) Use a spoonful of salt, put it in a pot and fry it until browned, and take it with warm water to spit out the phlegm and saliva in the stomach. (5) Catarrhal gastritis caused by food poisoning can be caused by salt salt. (6) Commonly used saline cough can prevent gum bleeding and have the effect of strengthening teeth.

7) Drinking a cup of salt soup in the morning can cure the symptoms of mouth and tongue erosion caused by heart fire.

4. Other uses of salt.

1) Commonly used salt to wash hair, hair is not easy to turn white and fall out, and the scalp is not itchy. In order to confirm this effect of salt, I shampooed my hair with salt water several times in a row with two classmates, and sure enough, my scalp was no longer so itchy, and there was very little hair loss. (2) Put the dyed fabric in the salt soup first, and the color will be evenly and beautiful.

The salt eaten contains NaCl, and the normal saline for medical treatment contains NaCl, and timely replenishment of NaCl sweat after sweating will take it away and pickle food.

Cook and cook. Disinfection and sterilization.

Use dehydration to kill insects.

Make lightly salted boiled water, which is conducive to the elimination of toxins from the body.

1.Add salt to the stir-fry.

2.Medical saline.

3.Chlor-alkali industry.

4.Hou's alkali method raw material.

5.Pickled vegetables.

Make salt, make naohChlorine gas production, acceptance, catalyst, freezer.

A pure substance (as distinguished from an elemental substance) in which a compound consists of two or more elements.

A compound has certain properties, both from the elements or ions it contains, and from other compounds, and often with a certain composition.

And the Chinese class is good at tens of thousands of dollars, and the other party is good-looking, and the speed is very fast, and the unit is still in class.

1. Industrially, electrolytic molten sodium chloride is used to produce metal sodium, and electrolytic chlorinated sodium solution is used to prepare caustic soda Qingyu and chlorine, which are used in Hou's alkali making method;

2. The salt that we usually eat in life is sodium chloride, which is an indispensable condiment;

3. On snowy roads, in order to prevent the formation of wild Chaga ice after melting, some sodium chloride is usually sprinkled for snow melting;

4. Infrared devices and optical instruments can be used as transparent materials for prisms, lenses, filters and various pool windows and laser windows.