There is a lot of surprising knowledge in life.
Chemistry knowledge is so cold that I don't want it!
A witty translator
Phenol is an organic substance.
It has a certain acidity, so it has an alias in English, called carbon acid, which means "carbon acid". When translating this word, people found that the Chinese "carbonic acid" had been used up by the real carbonic acid (H2CO3), so the word "carbon" was disassembled, so phenol had a Chinese alias: "carbolic acid".
Similarly, sulfuric acid is the most common oxygen-containing acid of sulfur element. The chemical formula is H2SO4. Another kind of acid is sulfonic acid, which also contains sulfur. The Chinese word "sulfur" is translated as "sulfonic acid".
Zhu Yuanzhang and chemical elements
In China, many chemical substances are named thanks to Zhu Yuanzhang.
Zhu Yuanzhang stipulated a set of unique naming methods for future generations: one of them is that the last word must take one of the wood (water) fire and earth as the side.
It's easier to start. Later, when the characters ran out, they had to be hard made, so there were Zhu Gongxi, Zhu shenlei, Zhu tongchromium, Zhu tongniobium, Zhu Rongji (?) Zhu mengalkane, Zhu yueene, Zhu dianyne, Zhu houhydrocarbon..... Zhu'an mercury.
These words were later included in the chemistry book, which skillfully solved the problem of Sinicization of chemical names.
When the great physicist Pauli's wife left him and married a chemist, he was so surprised that he couldn't believe it. He said to a friend, "if she married a matador, I can understand, but she married a chemist."
I think Rutherford can understand this mood. He once said, "science is either physics or stamp collecting." As a result, Rutherford won the Nobel Prize in chemistry.
In dilute solution, acid reacts with alkali to produce 1 mol of liquid water. The neutralization heat is 57.3 kJ · mol-1, and the angle corresponding to 1 radian is also this number.
What a painful understanding
You can go to other people's laboratories without masks, lab clothes or even gloves, but you must remember to pull and buckle your coat. Things scraped on the hem of clothes may be the workload of others in a month.
be worthy of the name
Picric acid, yes, is the explosive with the power of tnt102%
Do you know why it's called picric acid?
Because it is so bitter.
I cried bitterly.
The glyph and pronunciation of hydroxyl, carboxyl, carbonyl and hydrocarbon are all composed of half of the elements in the functional group (carboxyl is somewhat different, acid is on the right instead of element, and the pronunciation is also slightly different). Alkanes, alkenes and alkynes represent the complete, dilute and lack of hydrogen atoms.
In 1839, Charles Goodyear, an American inventor, accidentally found that natural rubber and sulfur could react miraculously to obtain a material that would not melt when heated, that is, vulcanized cross-linked rubber. Later, in memory of him, there was a famous rubber tire company in the United States called Goodyear.
If the car runs at high speed, the frequency of the force acting on the tire will be very high. Because the conformational adjustment of the polymer can not keep up with the rate of external force, the glass transition temperature of the polymer will rise to close to or higher than room temperature. In other words, rubber tires that should have remained elastic at room temperature will become rigid, lose elasticity and become like plastic, which is not easy to burst.
In 1846, schoenbein of the University of Basel was said to have knocked over something while doing an experiment in the kitchen, wiped his wife's apron, and threw the washed apron to the fire to dry... Then the apron ignited spontaneously. So he finally found nitrocellulose, or collodion, which could be used to make explosives.
Later, an amateur chemist, Hyatt of the United States, added camphor to nitrocellulose in order to find a substitute material for ivory. The plasticizing effect of camphor makes the obtained material have good toughness and can also be thermoplastic processed. This is the first kind of plastic in our history, the famous celluloid.
Remember in Quentin's movie [shameless bastard], the Jewish woman planned to blow up the Nazi officers who came to her cinema to watch the premiere. She just planned to light a pile of film films. Yes, the film was made of celluloid at that time, and nitrocellulose was also explosive after all... Friction and fire often occurred during film screening.