Since it is a chemical experiment, it is not enough to have experimental instruments alone, but also various materials used for experiments.

Therefore, after Chen Xu returned to the city, he went to the Academy of Sciences and asked Sun Shujiu to arrange for people to collect various metal materials, non-metal materials and various ores. These things do not require much, but they will be used in chemistry classes in the future. At the same time, Chen Xu also asked someone to help find a few alchemists who are proficient in alchemy and medicine refining, and then notify him to clean up a house in the Academy of Engineering to prepare it as a chemistry laboratory.

Chen Xu's arrangements were naturally completed soon. A few days later, Tang Ting personally brought people to deliver a truck of beakers, flasks, test tubes of various shapes and sizes, as well as some iron racks made of hemp rods, and other items. Chen Xu brought all these things to the laboratory of the Institute of Technology, and the several alchemists found by Sun Shujiu were also arranged to go to the laboratory to learn chemistry experiments with Chen Xu.

The first chemical experiment Chen Xu conducted was to distillate and purify alcohol.

The purification process of alcohol is not complicated, it is to distillate repeatedly at low temperatures. Of course, if you want to get high-purity alcohol, you must use a water absorbent to continuously remove the water from the alcohol steam. As the simplest organic chemical solvent, alcohol and many metal oxides and salts will not react chemically, so there is sufficient water removal agent to use, and the most common one is quicklime.

A large glass bottle is filled with a few kilograms of Zuibaxian, and then connected to another glass bottle filled with quicklime openings on both sides through a glass tube. Then connect it to the third inverted glass bottle to condense. All the conduit interfaces are sealed with wax, and then the large glass bottle is hung above the coal stove to bake to ensure that the wine boils slightly.

This is an extremely simple distillation process, and Chen Xu quickly assembled, but this complex structure made of various transparent glass fell into the eyes of several alchemists, which was as surprised as the earthlings saw aliens.

Therefore, during Chen Xu's installation process, several alchemists wearing Taoist buns and fairy-like style were like elementary school students and did not dare to show off their anger. They stood beside them with wide eyes and cautiously helped Chen Xu.

A group of craftsmen and teachers from the Academy of Sciences and the School of Engineering were very interested in Chen Xu's new trends. Soon dozens of people came to the laboratory to watch, and even Zhang Cang rushed back from the construction site outside the city.

Looking at the complex and strange glass instrument that was being distilled, Zhang Cang surrounded him and observed it carefully before sucking his nose and couldn't help asking: "Mr. Marquis, what is it in it? Why does it smell a strong aroma of wine?"

"Haha, this is the white wine that I made by the steaming method a few days ago. If you continue to distillate with this distillation instrument, you will get alcohol with high purity, which can be used as fuel, and there will be no smoke when burning, which can ensure that the experimental results are clearly visible!" Chen Xu explained with a smile.

"Is it because of the rumored Eight Immortals outside?" Zhang Cang couldn't help but exclaim.

"That's right!" Chen Xu nodded.

Since he told his family about the Eight Immortals drunkenness to his family in the Marquis' Mansion, the name of the white wine has now been spread from the Marquis' Mansion. In addition, this kind of high-quality white wine is drunk as soon as he drinks it. It is praised by those who have tasted it as a fairy wine. It has been spread in a few days and is almost well-known to Xianyang, but only heard of this kind of wine, and most people have never seen it.

Therefore, when I heard that the glass jar contained the Eight Immortals, the group of people in the laboratory couldn't help it.

"Mr. Marquis, wine is made of water. Can it burn?" a teacher asked in surprise.

"Wine and water are different. This is my purpose in opening this chemistry laboratory..."

"Mr. Marquis, the drunk Eight Immortals are drunk after hearing this. Can Cang taste it?" When Chen Xu spoke, Zhang Cang had already opened a jar with the word "wine" next to him.

"Please give me a gift, President Zhang!" Chen Xu nodded helplessly, so Zhang Cang used a bamboo tube to scoop up half a tube of wine, put it on the tip of his nose and sniff it, and then gulp down.

"Ga~~" Zhang Cang felt like he swallowing a mouthful of boiling water in an instant, covering his neck and trembling tears, and he stayed for half a minute before he slowly recovered.

"How does Dean Zhang feel?" Chen Xu smiled dryly.

"It's like drinking boiling soup into your heart. Cang has never drunk such a strong wine. It's indeed extremely violent, but the taste is mellow and rich. After one mouthful, the soul begins to float..." Zhang Cang wiped his tears tremblingly.

"Marty, I want to taste it too!" A group of onlookers surrounded him with a feeling of death.

"Drink, drink, each person, don't drink too much, the remaining marquis will still be tested!" Chen Xu waved his hand helplessly.

So the group of teachers and craftsmen who came to see the lively were all scrambling to grab the bamboo tube and began to taste the white wine. Soon a cough and a strange cry sounded in the laboratory. People who had drunk one by one covered their mouths and necks and began to wipe their tears. Some cheeks instantly turned red and began to sway.

Looking at the jar of wine that had lost two or three pounds, Chen Xu's face turned a little dark.

Fortunately, this is wine, not sulfate and hydrochloric acid, otherwise a large group of the best scientists in Daqin would have been poisoned to death.

It seems that a prominent sign will be posted in the laboratory in the future, and any experimental agents are prohibited.

These bad habits of ancient people who dared to taste anything with their mouths were really too scammed.

"Ahem, Marquis, what theory is this chemistry? Is it generally a technique of investigating things like physics?" Zhang Cang asked with a slight drunkenness.

"That's right, chemistry is also a branch of science, but it is studied by elements, belonging to the microscopic category, and is still different from physics, which studies natural changes that are generally invisible to the naked eye. Chemistry is the abbreviation of science of change. The simplest one is for example fire. We know that burning fire can heat objects and make many things burn, but what is the essence of fire, how it is produced, what are the internal reasons and principles of these invisible changes in the naked eye? Of course, this is just the most obvious part, and there are many that are actually like magic, and why Taiyi divine thunder can explode, and why the divine thunder fireworks burst out with colorful firelights? These all belong to the category of chemical research..."

"Marty, isn't Taiyi Divine Thunder a magic trick?" A teacher asked in surprise.

"Where is the magic of immortality? It must be a source, just like fire. In ancient times, the ancients believed that fire was the thunder and fire brought down by the gods. Later, Suiren invented the art of drilling wood to make fire. From this, people gradually realized that fire was not caused by the gods to cause anger, but a natural phenomenon. I said in physics classes before that friction generates heat. When the accumulated heat from friction is enough, wood chips can be ignited, just like a match. A light stroke of flames appears. This phenomenon is no longer explained by simple physics, but a more subtle chemical reaction that cannot be seen by the naked eye. So what is the principle of match burning? Can anyone know?"

A group of onlookers began to daze while plucking their beards and pinching their chins.

Fire is a common natural phenomenon. No one has ever studied it carefully for thousands of years. Zhang Cang has been with Chen Xu for several years. He is not only a mathematician and construction engineer, but also an avid science enthusiast. He is very interested in the various physical theories proposed by Chen Xu, especially the experiment of two copper balls landing at the same time, which suddenly subverted people's ordinary cognition. It turns out that the heavier things fall faster. Although Zhang Cang has never figured out the principle of this, he also feels that there must be an unknown force between heaven and earth. He asked Chen Xu several times, but Chen Xu did not tell him, only saying that his idea was correct, but the more specific content was not disclosed.

The problem with gravity acceleration is not that Chen Xu is unwilling to say, but that this thing is too profound. Moreover, the unit of measurement of Daqin is completely different from that of later generations. Before accurate clocks and precise weight-based units are invented, these physical formulas are not very meaningful, but will bring more unclear problems, and it has no meaning to the current technological level of Daqin.

Perhaps Chen Xu could only wait until he died and left all the physics and mathematical formulas of later generations in his suicide note for future generations to reason and verify.

"Since Dean Zhang and you are so interested in chemistry, today I will demonstrate a very simple chemical reaction to you..."

Chen Xu smiled and took a few pieces of green alum, put them in an iron mortar and mashed them into powder, then put them in a crucible and heated them on a coal stove.

A circle of people suddenly surrounded the coal stove, staring at the crucible with alcohol in his mouth, without blinking.

Child alum, also known as blue alum, is also called copper sulfate pentahydrate. It is a natural crystalline ore. When mining copper ore, it will be dug out a lot. The ancients like to collect it as gems.

Like raw gypsum, because it is a hydrated crystal ore, it will decompose the water molecules inside and eventually turn into pure copper sulfate, which will turn into white powder.

Although Chen Xu didn't know how high the temperature of the gallbladder would decompose, the temperature of the coal stove could burn red or even melt steel, enough for the water molecules in the gallbladder to decompose.

A priest squatted beside him and pulled the bellows. With the sound of whirring, a slightly pungent smell quickly emanated from the air, and the blue powder in the crucible began to fade away. After a few minutes, the blue powder placed in the crucible turned white.

The group of people watching began to talk.

"Mr. Marquis, is it because this alum has changed from blue to white? "A craftsman couldn't help asking.

"Yes, but this is just the simplest chemical reaction. During the heating process, something will be lost in the alum, and the color will change!" Chen Xu nodded.

"It's so strange, what did you lose to change color?" Zhang Cang continued to stare blankly, twisting his beard.

"In fact, it is very simple to verify what you have lost. Let's do a reverse test and you will know!"

Chen Xu took a beaker, poured some water into it, then scooped out some powder from the crucible with an iron spoon, raised the beaker high and said, "Everyone is ready..."

While Chen Xu was speaking, he poured the copper sulfate powder into the beaker, and gently shook the beaker a few times. Almost instantly, the water in the beaker turned light blue.

"Wow~~" The entire laboratory was in an uproar.

"This...is this a fairy art?" A priest said excitedly and said that he could not shake.

"It's not a fairy technique. Please think carefully about what I hou said just now!" Chen Xu shook his head.
Chapter completed!