3-quinolinecarbonitrile, 2-chloro-

"Tiangong Kaiwu" is a scientific and technological masterpiece written by Song Yingxing in the Ming Dynasty. Today, in the style of classical Chinese, it is for you to explain "what are the chemical properties of 3-boron-calcite and 2-hydrogen-".
Boron-calcite is a special ore containing boron. Boron is in it and has unique chemical properties. The electronic configuration of boron allows it to form various chemical bonds. In the calcite structure, it interacts with calcium, carbon, oxygen and other elements. Boron is often in the + 3 valence state and can participate in the formation of complex crystal structures. When exposed to acid, boron-calcite can chemically react, and boron or borate ions dissolve, and due to the presence of boron, this reaction may be different from ordinary calcite. Boron also affects the optical properties of calcite, giving it a special refractive index and birefringence phenomenon, which has potential uses in optical materials and other fields.
As for hydrogen, it is the lightest and simplest element in the universe. Hydrogen has strong reducing properties and is often used as a reducing agent in chemical reactions. Under high temperature conditions, hydrogen can react with many metal oxides, reducing the metal to precipitate, and itself oxidizes into water. Hydrogen can also combine with non-metallic elements. For example, it reacts violently with chlorine to form hydrogen chloride, which has significant exothermic characteristics. Hydrogen is gaseous at room temperature and pressure, and it is difficult to dissolve in water. Its intermolecular force is weak, resulting in an extremely low boiling point. In the field of electrochemistry, hydrogen-oxygen fuel cells use the chemical reaction of hydrogen and oxygen to generate electricity, which is one of the important applications of hydrogen. Hydrogen also participates in many organic synthesis reactions, and is a key element in the construction of important chemical bonds such as carbon-hydrogen bonds, which is particularly important in the field of organic chemistry.

"Tiangong Kaiwu" says: "All lime is used by fire. After it is formed, it will not be damaged forever when it enters the water. Hundreds of millions of boats, hundreds of millions of walls, choking gaps to prevent adultery, it must be done." This so-called lime, also including calcite, limestone, etc., calcined to form calcium oxide, which is widely used.
In today's words, calcite is warm in quality and peaceful in nature. The color is often white, occasionally colorful, or yellow or green or brown, all of which are natural colors. Its shape is mostly block-like, granular, with delicate texture and glassy luster. The Mohs hardness is about 3, which is easier to characterize. In case of dilute hydrochloric acid, it will foam violently, which is its remarkable characteristic. < Br >
And hydrogen is the lightest of all gases. Colorless and odorless, insoluble in water. At room temperature, the chemical properties are stable, and it is dangerous to encounter open flames and high heat energy to cause combustion and explosion. Hydrogen is flammable, burning in oxygen to generate water, and the flame is light blue, clean and pollution-free. And hydrogen is reductive and can react with many metal oxides to reduce and precipitate metals, which is very useful in metallurgy and other industries.
Calcite is an important material in construction, chemical industry and other industries. Hydrogen also has extraordinary potential in energy and chemical fields. Both are gifts of nature, and they can be used well for people's livelihood and add brilliance to the world industry.

The ancient sages observed the principle of yin and yang, and made it into this object for the benefit of the people. Its use is also, when making sacrifices, to make fire with the yang flintlock, to worship the gods, and to show their sincerity; on daily occasions, it can be ignited for cooking, heating and lighting, and to facilitate life.
As for the nitrate, its nature is strong, and it is often encountered by ancient alchemists. Later generations observed its characteristics and found many uses. In the military, nitrate is the essential agent of gunpowder, and it can be used in combination with sulfur, charcoal, etc., to make gunpowder. When burned, it explodes, and its power is huge. It can be used as a firearm, such as a flare gun, artillery, etc. In the battle formation, it can kill the enemy to win and change the war situation. In civilian use, it is also useful. In some workshops, it can be used to fire ceramics to help their fineness; in the production of fireworks, nitrate is also the key, which can make fireworks bloom brilliantly for festival and entertainment needs.
Sun flintlock makes fire, which is natural, and uses the light and heat of the sun to obtain fire sources; the application of nitrate is the use of human observation and material properties, which brings many changes to military and civilian use. Both are the manifestations of the wisdom of the ancients, and have indelible contributions to the development of Chinese civilization.

In "Tiangong Kaiwu", the method of making white sugar is to fry the yellow berberis in water, remove the black dross, re-fry it, and then expose it to the sun and middle, that is, white sugar. As for making sugar from rice, wheat, millet, millet, etc., there are also different methods, all of which need to be boiled, filtered and other processes.
There are many kinds of methods for making alum. Take green alum as an example, which is taken from coal and has copper. It is calcined in the furnace. The smoke is like a yellow cloud, and it condenses when cold, which is green alum. There is also alum, which is mostly obtained from stone and is made by frying and refining. Alum has a wide range of uses and is indispensable in many industries such as dyeing and papermaking.
Green alum, which can be calcined into dead alum, has different uses. Alum is astringent and can be used for water purification, anti-corrosion, etc. The method of making alum requires multiple processes according to its characteristics before it can be made into a suitable alum. The origin of alum is different, and its quality is also different. The alum maker needs to be well identified and use its method according to its characteristics to get the best product. The production of sugar and alum depends on the skill and experience of the craftsman, and careful work can be done to obtain good products for the world.

If you use 3 + -square lead ethyl sulphur and 2 + -cyanide, you should be cautious.
square lead ethyl sulphur, its nature may have hidden concerns. When using it, the first thing to consider is its environment. It is necessary to choose a well-ventilated place to prevent the accumulation of foul gas. If you are in a room, you must open the windows and windows so that clear air can enter and the turbid gas can come out, so as not to be invaded by poisonous gas. And do not use it near a fire. This is the source of fire. If you are not careful, you may cause a prairie fire.
As for 2 + -cyanide -, its poison is especially serious, and it needs to be protected. When handling, it is necessary to wear protective gear, such as special clothes, thick and tough gloves, and a tightly sealed mask, to prevent the skin from touching it, and the mouth and nose from sucking it. After using it, be sure to wash the utensils used again and again, and the rest should also be disposed of according to the rules. Do not discard them at will, for fear of polluting the environment and harming life.
Furthermore, the person who handles it must first know its nature and its risks. Do not act rashly without knowing the details. The process of walking should also be paid attention to step by step. If there is a slight abnormality, stop and check quickly, and must not be negligent. When everyone coexists, they also need to take care of each other. If there is an alarm, they will report to ensure safety together. After using it, check the whole body carefully. If there is any discomfort, ask a good doctor quickly, and do not delay. In this way, you can use the convenience of things and avoid their harm.