Silver halide is an important class of compounds. Its physical properties are unique.
In terms of color state, silver chloride is a white solid, silver bromide is a light yellow solid, and silver iodide is a yellow solid. They all have different colors and are easy to distinguish.
Solubility is particularly critical. In water, silver halide is insoluble, which makes it unique in many chemical processes. And the solubility gradually decreases according to the order of silver chloride, silver bromide, and silver iodide.
Photosensitivity is also a significant property of silver halide. Silver chloride, silver bromide, and silver iodide all have photosensitivity, and decomposition reactions occur under light. If silver chloride is irradiated by light, it will decompose into silver and chlorine gas, which makes it widely used in the field of photography. In the past, silver halide was mostly used as a photosensitive material for negatives. When light acted on the negatives, silver halide decomposed to form latent images, and then developed and fixed to obtain images.
The melting point and boiling point of silver halide also vary. Generally speaking, with the increase of the radius of halogen ions, the melting point and boiling point of silver halide decrease. This is due to the change of the radius of halogen ions, which affects the interaction between ions in the crystal structure, and then affects the melting point and boiling point. < Br >
In addition, the crystal structure of silver halide also has characteristics. Different halide ions combine with silver ions in different ways, resulting in differences in crystal structures, which also has a certain effect on its physical properties.

Mercury has a special shape, and its nature is also special. Its color is white, and it is often flowing. Under normal conditions, it is the only gold that is liquid, and the light is shining, just like a river.
The density of mercury is high. If it is placed on the surface of an object, it can often float on it, like a boat in the sea. Its boiling phase is low, and it is easy to melt and steam. It is diffuse in the air, and its shape is low. However, its toxicity should not be careless.
And the chemical activity of mercury can also be reduced. In case of oxidation, such as sulfuric acid and nitric acid, it can be biochemically combined and reacted to form chemical compounds. It can dissolve many metals, such as gold, mercury, etc., to form mercury. This characteristic has been in ancient times, and it is widely used in metallurgy.
In addition, mercury has the ability to dissolve, which is not as good as that of gold, etc. However, it can also be used in specific equipment components, such as mercury, to emit light and illuminate in darkness.
If it is necessary to be warned, mercury is poisonous. If it is eaten or inhaled, it will cause fatigue, insomnia, serious life-threatening, and mental, digestive, urinary, etc. Therefore, when it is used, it is necessary to follow the standard procedure to prevent accidental poisoning.

Mercury pills, also known as lead pills, are widely used and are involved in various fields.
In the field of medical medicine, mercury pills have the ability to detoxify and remove rot, converge sores and build muscles, and drop phlegm to relieve shock. In surgical diseases, such as carbuncle and swelling at the beginning, mercury pills can be applied to dissipate swelling knots; if the sores are collapsed and the mouth is not closed for a long time, they can produce muscles and converge sores. In internal medicine, mercury pills also have the effect of falling phlegm and suppressing shock in response to phlegm heat and convulsion. However, their nature is toxic, and the dosage and usage should be carefully considered.
Mercury pills are also important in the process of alchemy and pharmaceuticals. The ancient alchemists often used mercury pills as one of the raw materials, hoping to refine the medicine of longevity. Although the wish of longevity is ultimately illusory, the chemical knowledge and skills accumulated in the process of alchemy are also the cornerstone of the development of medicinal chemistry in later generations.
In addition, mercury pills are also used in industrial dyeing, anti-corrosion and other fields. When dyeing, it can be used as a pigment aid to make the color adhere more firmly; when anti-corrosion, it can inhibit the growth of microorganisms and protect objects from damage for a long time.
However, it is necessary to keep in mind that mercury pills contain mercury and are not lightly toxic. When using, it is necessary to strictly abide by the regulations to prevent the risk of poisoning, so as to protect human health and the environment.

The ancient method of preparing 1-% essence ointment is as follows:
First extract the essence, soak it in water, and dissolve it in water. The proportion of water should be in the middle, not too low, and not too light. The water soaked in the water needs to be kept in a clear and dyeing vessel, so as not to mix it in and reduce its essence.
And, take a solid kettle and place it on a high-temperature fire. The dissolved water is put into the kettle, and fry it slowly over a slow fire. Fried, it needs to be guarded by people, so that the fire is not fierce, so that the water boils and comes out. When the amount of water in the kettle is small and the amount of water in the kettle is high, it is even more important to pay attention to the heat to steam the water.
When the liquid in the kettle is thick and thick, it seems to be condensed but not condensed, and the kettle is moved to the fire. In this case, it is necessary to take advantage of the heat to remove the heat from the water or cloth to remove the possibility of leaving it. The ointment of the ointment of the ointment is quickly put into the container of the ointment, and it is dense to prevent the staining of the air.
Making this 1-% ointment depends entirely on the grasp of the heat, the cleaning of the container, and the operation. If the heat is fierce, the paste is easy to coke and lose its essence; if the container is not good, it will be mixed in, and the product will be damaged; if the operation is not careful, or the proportion is lost, the process will be difficult, and the excellent 1-% paste will be obtained. Those who work hard need to work hard to get this delicate paste.

During the storage and transportation of braised egg geese, many matters need to be paid attention to.
The temperature and humidity of the environment are the first priority. Braised egg geese like to be dry. If the humidity is too high, they are prone to mildew and accelerated decay. In summer heat, the humidity is also high. At this time, a dehumidifier should be installed in the storage place to keep the humidity in a suitable environment, generally 50% - 60%. Temperature is also critical. It is advisable to keep the braised egg geese in a cool place away from direct sunlight. In summer, it is especially necessary to refrigerate, preferably at 2-8 ° C. It can extend its shelf life and prevent deterioration and spoilage.
Times and packaging. Packaging should be tight and protective. It is wrapped in clean and non-toxic packaging materials, which can block the intrusion of external moisture, dust and bacteria. If vacuum packaging is used, it can isolate oxygen, slow oxidation and microbial growth. However, it is necessary to check the integrity of the packaging. If there is any damage, it is difficult to maintain the quality of the braised egg goose.
Another is the transportation process. When handling with care, avoid collision and extrusion to prevent the shell of the braised egg goose from breaking and internal damage. The transportation tool should also be clean and hygienic, odor-free, and have temperature-controlled equipment to ensure stable temperature and humidity during transportation. For long-distance transportation, it is necessary to regularly check the status of the braised egg goose. If there is any abnormality, dispose of it in time.
In addition, during storage and transportation, pay attention to its shelf life. According to the different production processes and additives of braised egg geese, the shelf life is different. To set clear signs, according to the first-in, first-out principle, priority should be given to those that have been stored for a long time to prevent expired consumption and risk food safety.
Only by paying careful attention to all aspects of storage and transportation can the quality and flavor of braised egg geese be preserved for people to enjoy with peace of mind.