Kaimo. Strell had barely slept these days, finding that coming to Border Town was the most correct choice he had ever made in his life.

After spending two days and one night flipping through "Elementary Chemistry" in its entirety, he slept for two or three hours and was refreshed again. Now he had returned to the first page, carefully studying this ancient book from the beginning.

Matter is composed of extremely small particles! Changes in matter are the decomposition and recombination of particles! During the reaction, the total amount of matter remains unchanged!

Heavens, what kind of person is the author of this book, who can describe the world that people cannot see so clearly? He had more than once suspected that the contents of the book were fabricated, but the alchemy experiments conducted according to the examples above were completely consistent! Moreover, some common examples in reality can also prove its correctness.

For example, oxygen described in the first chapter.

This gas is the main component of air, and people breathe not air, but oxygen. Fire needs oxygen to burn because burning is essentially an oxidation reaction. The more oxygen, the stronger the burning.

These words reminded him of the glass kiln in Redwater City, which required two people to constantly shake the bellows to raise the temperature in the furnace to the melting point of the sand. Since it is matter, it can obviously be extracted by alchemy... no, by chemical reaction to obtain pure oxygen. If oxygen can be directly passed into the furnace, can the blower equipment be saved?

And the most amazing thing is that the book says that water is composed of two hydrogen particles and one oxygen particle, which is probably the reason why all living things have to drink water. However, hydrogen seems to be a gas, how is it possible for two gases to combine into a liquid?

Kaimo realized that he still had many questions to ponder. But one thing is certain, he has already walked ahead of all alchemists. While they are still groping for formulas in chaos and mist, a straight and flat road has appeared before him.

However, business still needs to be done. He reluctantly closed the book. At this time, the sky was gradually turning white, and it was time to work again.

Kaimo blew out the candle and went to the bedroom to take a look at his sleeping wife and daughter, and quietly went out.

The residence assigned to him by His Highness is located west of the castle, much larger than his home in Redwater City. The walls are made of brick and stone. Compared with wood that is prone to mildew, this kind of house is obviously much more comfortable, and the furniture and kitchenware are all available. Although he didn't say it, he felt quite satisfied in his heart. The disciples lived in another neighborhood two blocks away from him. The house was a circle smaller, and it was not a separate house, but a bit like the layout of a hotel, with one bedroom for four people.

Walking to the chemistry laboratory by the Redwater River, the disciples were already busy. They were carefully selected by Kaimo, and had been learning to clean materials in the alchemy workshop since they were children. Now they are all between twenty and thirty years old. Seeing the clean laboratory and the shiny glass containers, Kaimo nodded in satisfaction.

"Good morning, Chief Instructor," the disciples bowed their heads together.

"Let's begin." He took out a pair of gloves from the cabinet and put them on - these gloves were extremely thin and elastic, probably sewn from animal intestines. There was no such regulation in the alchemy workshop before, but Prince Roland repeatedly emphasized the dangers of chemical experiments. In the operating rules, gloves must be worn for all reactions involving corrosive raw materials, and all windows must be opened at the same time.

Unlike the workshop, their current work content is very clear, which is to prepare acid for His Highness. They have operated the method of making acid from double stones many times, so Kaimo only needs to inspect and guide them from the side, and does not need to do it himself.

These two acids are described in detail in "Elementary Chemistry", one is called sulfuric acid and the other is called nitric acid. And he used to use the manufactured product to name them, such as the former called green vitriol acid, and the latter called niter acid. Although the names are different, the production methods are basically the same, the acid vapor is obtained by dry distillation of green vitriol stone and niter, and then the acid liquid is obtained by condensation and collection. Green vitriol is usually associated with sulfur ore, while niter is produced in special niter production ponds in large cities, which are common raw materials.

However, His Highness emphasized that the concentration of the two acids he wanted must be high, and he also specially instructed the purification method.

For example, after sulfuric acid is collected, it can be heated to evaporate the water.

Finally, concentrated sulfuric acid with a concentration of up to ninety-eight percent can be obtained. However, nitric acid is much more troublesome. According to Prince Roland, this acid itself is not very stable and easily evaporates. When the concentration is high to a certain extent, it will even decompose when exposed to light. Therefore, the dilute nitric acid produced by dry distillation must be mixed with concentrated sulfuric acid and heated to allow the concentrated sulfuric acid to absorb water and evaporate the nitric acid, which is stored in brown glass bottles. For this reason, His Highness also specially prepared a thermometer.

When Kaimo saw it for the first time, he felt that this thing was truly ingenious. A hollow glass tube contained mercury, and both ends were sealed to prevent the mercury from leaking. There are several circles of paint lines drawn on it. The mercury will gradually rise when heated, and the final position where it stops represents the current temperature.

Now, the laboratory has produced three bottles of concentrated sulfuric acid and one bottle of concentrated nitric acid. At this concentration, he discovered that sulfuric acid is not as easy to flow as water, but more like a viscous oil. Nitric acid is no longer colorless and transparent at high concentrations, but turns into a light yellowish color. As long as the glass bottle is opened, bursts of white smoke will be emitted.

"Instructor, do we have to prepare these two acids every day?" a disciple named Amon asked.

"Until His Highness gives new tasks." Kaimo paused, "What's wrong, worried about not having time to explore alchemy formulas?"

Amon nodded.

Kaimo stroked the stubble on his chin and smiled, "I forgot to tell you, the title of alchemist is no longer needed in the future, so you don't have to rely on exploring formulas to become an alchemist."

"No..." Amon was stunned, "No longer needed?" The other disciples also slowed down their work and listened carefully to what the instructor was going to say next.

"That's right, alchemy formulas no longer need to be explored, but memorized and deduced," Kaimo clapped his hands and simply gathered everyone around him, "His Highness has given me a book called "Elementary Chemistry" - this is also the reason why I brought you here. If you study it thoroughly, most of the formulas in the world can be deduced from the contents of the book."

"Deduce?" the disciples exclaimed.

"That's right. After I have studied it in detail, I will open a class to teach you." He said, "As for the promotion path, His Highness has also mentioned it to me. In the future, you must pass the tests personally arranged by him to obtain the title of chemist. Believe me, it won't be long before this honorary title completely overrides that of alchemist. And the knowledge you have mastered will be beyond the reach of even the Alchemy Association of the royal capital."