Q:What is the aromatic hydrocarbon .. what is the derivative of the aromatic hydrocarbon

Aromatic hydrocarbons referred to as "aromatic hydrocarbons", refers to the molecule containing benzene ring structure of the hydrocarbons. Is a closed chain.

Q:What is carbohydrate? What is organic? What is it?

Organic compounds contain hydrogen, oxygen, carbon three elements, and the proportion of hydrogen and oxygen in accordance with the composition of the water called carbohydrates. Organic matter is a compound containing carbon, but does not include carbon elements and their allotypes and carbon dioxide and carbonates. The inorganic matter is a carbon-free compound

Q:Is the resin a dangerous chemical? Is there any other alias?

The resin is a very broad concept with solid liquid

Q:High school chemistry: Is the esterification reaction of carboxylic acid and alcohol a polymerization reaction?

No, the polymerization reaction is the reaction of the polymer, the esterification reaction is the reaction of the formation of small molecules

Q:What is the difference between hot and cold asphalt?

According to the time analysis, municipal companies should use the cold asphalt cold material, is the winter road maintenance of commonly used materials. In the long winter, the asphalt pavement works because of the temperature (less than 5 degrees is strictly prohibited construction), is very little construction, even if the construction, the quality is higher than the temperature when the construction is worse (asphalt mixture cold fast, easily lead to compaction The lack of pressure on the pressure, and prone to cohesive, poor water quality problems such as water), because no demand or demand is small, this time the major asphalt mixing field have a holiday home to the New Year. But the road will be the same as the winter disease, pit and other small diseases are not treated in time, easy to evolve into a large disease, there may be dangerous roadbed, running up the driver also curse, out of the accident maintenance department also bear responsibility, so the winter road Also need to maintain. At this time asphalt cold feed came into being, asphalt cold feed is used aggregate (graded gravel) plus dehydration asphalt plus diesel and additives mixed with the construction of the temperature requirements, the pits filled with pavement , Such as diesel fuel has finished bitter gluing together, but the construction quality is not good, no hot mix asphalt dense. So the winter is approaching, the road maintenance department will need to mix a few tons of asphalt cold feed sealed (to participate in 25kg rice), there are pits to pull a few bags to fill, and so on these problems when the pit and digging with the heat Mixed with asphalt material repair. In summary, the asphalt cold feed is a special winter pavement pit repair using the material, the construction process and hot mix asphalt material is roughly the same, but the construction quality is relatively poor, is a special time emergency measures, very useful materials.

Q:What is a derivative?

Derivative refers to a simple compound in the hydrogen atoms or atomic groups replaced by other atoms or atomic groups derived more complex products

Q:What is the current status of carbon dioxide capture technology and how is it compared to plants that absorb carbon dioxide?

The principle is probably that the middle of the thing is the electrode, and then the surface of the electrode there are some powerful catalyst in the sunlight can promote the oxidation of water or carbon dioxide reduction. The electrode can move the proton to the other side and not allow the product or product to move to the other side. After the proton has been transferred, the electrochemical process can be used to hydrogenate the carbon dioxide.

Q:Such as the title, the personal feeling of chemical transliteration of Chinese transliteration can be done so easy to write, weird name in addition to keep the high point, no good, but rather affect the people's understanding of medicine and memory, contrary to the text to facilitate the exchange of memory Original intention

The most basic hydrogen prefix plus a sound next to tell you that the elements of the common element of the standard situation is the same kind of gas bromide tellurium metal next to the word next to the sound next to no matter how much the child knows that this law will be recited next to the next Periodic table down to know the elements of the material highlights a good note

Q:Other corals are because the color of the corals show colorful, why only the red coral is the exception of it? did not find the reasons for the big god to explain

The main components of the red coral bone or coral as the general calcium carbonate. But the red coral bones can be made into jewelry, mainly due to its large bone density, the crystalline form of calcium carbonate for the triangular calcite rather than other common hard coral orthorhombic aragonite. Different crystal forms, combined with the trace element composition ratio is mainly Mg / Ca ratio and Ba / Ca ratio, even the same kind of red coral color texture is also slightly changed. This difference is the red coral growth environment and seawater composition may be, therefore, red coral skeletal trace element ratio has become the growth environment, the most important proof of the collection.

Q:Inorganic chemistry employment direction? Current research direction

Inorganic chemistry is the science of the composition, nature, structure and reaction of inorganic matter, which is the oldest branch of chemistry. Inorganic substances include all chemical elements and their compounds, except for most of the carbon compounds. (In addition to carbon dioxide, carbon monoxide, carbon disulfide, carbonates and other simple carbon compounds are still inorganic substances, the rest are organic matter.) Inorganic chemistry is in addition to hydrocarbons and their derivatives, the nature of all elements and their compounds And their reaction to experimental research and theoretical interpretation of science, is the development of the discipline of the earliest branch of a discipline.