I have a full-time hero system

Chapter 244 The Key to the Different Elements
Here Yuan Xiao made a conservative assumption.

The civilization of this world has a history that can be traced back only a few hundred years.

Moreover, from the beginning of civilization, it stood on a relatively high level of technological application.

A very modern, arguably even futuristic world.

However, to Yuan Xiao's surprise, he could not find any earlier records.

It's like a person sleeping in a cryogenic cabin for hundreds of thousands of years, and after waking up, he can use the existing technology at his fingertips.

He doesn't need to think about the principles of these technologies and their sources.

All you need is to know how to use it.

It looks very convenient at first glance, but there are also huge hidden dangers.

That is such an applied civilization, it is very difficult to progress.

Once there is any natural or man-made disaster, the destruction is an instant thing.

Human beings in the world have realized the fragility of civilization.

This is the reason for the current archaeological efforts. .

Therefore, when Yuan Xiao made such an assumption, it immediately attracted the attention of all the students.

That's right, no one has ever thought about how the current technologies are transformed from the original.

"We can assume that the development of chemistry is a common progress with mankind. This must be a long-term accumulation." Yuan Xiao continued his point of view.

Not perfect, but the students had no way to refute it.

From the perspective of the technology tree, Yuan Xiao's words have a certain basis.

All technologies are developed by accumulation.

"This is the human understanding of chemistry that I estimated in the earliest era," Yuan Xiao smiled. "Actually, everyone should be able to accept this level of chemistry."

The essence of chemistry is actually the interaction and transformation between elements.

This is how clay becomes porcelain.

The students nodded.

"Then, let's continue the hypothetical process," Yuan Xiao said step by step, "At the beginning, people found that the soil would change, or other things would change.

Whether to a certain extent, will they have bolder ideas.

Such as turning a stone into gold. "

The whole class was in an uproar.

Xia Wanqing raised her hand: "Teacher, what you said is simply impossible to achieve."

"Yes," Yuan Xiao agreed, "but think about it, this is the answer we now know.

However, do you think this is an absolute fact?

After all, chemistry has not come to its end. "

Xia Wanqing was speechless.

"The emergence of alchemists is predictable," Yuan Xiao knew the development and changes of chemistry, and he spoke eloquently, "Their purpose is to refine immortality medicine or gold.

Or possibly other very rare substances. "

"This process is understandable," Su Chenyi affirmed. "When a human opens a new door, they must be curious about everything inside, and bold and extensive exploration is predictable."

"Yes," Yuan Xiao praised, "This can also be said to be an important process from primitive perception to automatic hands-on research.

Then speculate whether there will be any qualitative changes after accumulating experiments and huge data. "

Fang Xuyao ​​nodded: "We can accept the process from quantitative change to qualitative change."

"The final result of the qualitative change leads to the emergence of chemistry as an independent discipline," Yuan Xiao began to conclude, "We can predict that such a complicated process cannot be brought about overnight."

Ye Qingdai was thoughtful: "I know that modern medicine intersects with many aspects of chemistry.

What the teacher said is that our exploration of the nature of chemistry is not limited to the existing excavated technologies, but more of an exploration of its extension. "

"Very good," Yuan Xiao was very satisfied, the students in Class [-] are very smart, "That is to say, if we only apply superficially, we don't know the core problem of chemistry.

Then our thorough framework for the branch of chemistry will be difficult to achieve. "

Imitation and application, after all, is to use the original technology.

Only by self-research and discovery can we say that we have entered the door of chemistry.

"Then here comes the question," Xia Wanqing said that she could actually understand, "What is the core problem of chemistry that the teacher said."

Yuan Xiao pressed one hand on the blackboard.

"Next, all the students in the class should pay attention," Yuan Xiao kept smiling, "The first point of the core problem of chemistry is the elements.

Tell the teacher what you saw on the blackboard. "

Is this a test of our IQ?

The students are a little confused.

Isn't it the teacher's hand?

But for a while, no one dared to answer.

"Teacher," Xia Wanqing finally raised her hand, "Is your hand the correct answer?"

"Very correct," Yuan Xiao raised his hand, "Sometimes the simplest and most primitive question is the most hesitant answer. I hope everyone will remember this feeling."

Being a fan of the authorities probably means something like this.

"Then here comes the question," Yuan Xiao raised his right hand, "Why do you think the answer is my hand, not something else."

Everyone was stunned.

This is not nonsense, what I see is your hand.

But there are also students who think deeply.

Fang Xuyao ​​was the first to discover the problem: "Teacher, what you mean is how we should distinguish different elements, or in other words, what is the basis for distinguishing them.

Is it right? "

Yuan Xiao gave everyone a thumbs up.

Proud index +777, +666, +888...

A successful harvest, okay.

Xiaobai's educational world is really great.

"What Xu Yao said is very correct," Yuan Xiao wrote two letters on the blackboard, "H and O, based on everyone's knowledge, everyone knows what elements they are."

In the current world, there is still some knowledge of chemistry at this point.

Li Mulan also opened her eyes, surrounded by immortal energy, she actually opened her mouth to answer: "It's hydrogen and oxygen atoms."

"That's right," Yuan Xiao applauded, "Then let me ask everyone why hydrogen atoms are hydrogen atoms instead of oxygen atoms."

Why are you talking nonsense again.

This is how the world was born.

They said there was nothing they could do.

"Teacher," Su Chenyi was taking notes, "You mean, you found a way to distinguish them."

The crowd was in an uproar!

If this is true, it would be a major event in the history of world chemistry.

How did you find it.

"Xiao Chenyi is very correct," Yuan Xiao kept smiling sweetly, "During this archaeological operation, the teacher was very lucky to find the solution to this problem.

Then, the fundamental reason why the elements are different lies in the difference in their proton numbers. "

The crowd was stunned.

"The number of protons may be unfamiliar to everyone. In fact, it can also be said to be the number of protons in the nucleus. This nucleus means the nucleus of an atom." Yuan Xiao turned around and began to write, "Next, there is a very important concept. I hope that every student Write it all down."

Yuan Xiao wrote an equation on the blackboard.

Number of protons = number of nuclear charges = number of electrons outside the nucleus = atomic number.

He gently put down the chalk in his hand, "This is the key to the different elements."

(End of this chapter)