Rebirth of Xueba's sweet wife

Chapter 112 Sister Kills You Instantly With Eggshells [7]

When Bei Kehan, who had been drifting away and doing nothing, moved, everyone couldn't help but stare at her, wanting to see what new tricks she could come up with.

I saw Bei Kehan ​​laying the eggshell flat, and pouring the sodium sulfide solution in gracefully along the gap on the top of the shell, without leaking a single drop;
Then, she placed the eggshell filled with sodium sulfide firmly in the copper chloride solution.

Neither sinking nor tilting, the shell floated perfectly in the solution like a work of art.

And all of Bei Kehan's movements seemed to have been practiced hundreds of times, fast, precise, and smooth, without the slightest mistake.

Mr. Kong's smile deepened, the principal frowned, and the chemistry teacher's eyes widened.

Finally, a child came to his senses and started searching for "sodium sulfide + copper chloride + eggshell" on his mobile phone...

After a few seconds, someone let out an unbelievable cry: "My God, it's true, it's true! Someone actually did this experiment! This experiment can indeed replace copper..."

Everyone looked at each other in blank dismay, unable to believe that all of Bei Kehan's weird actions before could finally become a real experiment like magic.

However, soon, some people also raised doubts: "No! It is true that the materials are these three, but, haven't you seen it? It is said on the Internet that the person who did this experiment spent a full week. , to successfully extract copper."

When you think about it, you are right. If copper can be extracted so easily, why is it so troublesome to replace it with iron powder or electrolysis instead of using egg shells to extract copper in chemistry textbooks?
It turns out that the fatal shortcoming of this method is that it takes too long! ! !
Zhou Qing, who was on the stage, kept listening to the discussions in the audience with her ears pricked up.

Hearing this, she couldn't help pursing her lips into a smile, and squinted at Bei Kehan.

When she found that Bei Kehan ​​had quickly arranged all the materials and waited quietly for the result with her hands crossed, she couldn't help but chuckled in a low voice: "Don't play tricks! I've said it all, a fool will always be a fool, don't think about it Walking side by side with a noble genius! I don't know how you know about this heresy method, but I'm afraid you only scratched the surface and didn't notice the time it takes? You think everyone can play with you Worship? Hahahaha...ha—"

Zhou Qing's laughter stopped abruptly.

Because she was shocked to find that the inconspicuous broken eggshell in the container in front of Bei Kehan ​​was changing color.

Moreover, it is changing color at a super terrifying speed!

Not only Zhou Qing, everyone present was shocked by the scene in front of them!
Even Mr. Kong closed his smile and stared at the weird eggshell with a serious face!
In order to see clearly, the principal and the chemistry teacher rushed directly from the last row of the classroom to the first row, regardless of the image, so as to observe the change of the eggshell up close!
The sitting students, regardless of the constraints of classroom discipline, stood up one after another, wanting to grab the front row and witness the results of this unprecedented experiment!
The other three boys who were still waiting for the results of the experiments in their containers simply gave up their higher requirements for purity and no longer tried to further purify. Behind Ke Han, she stared straight at the eggshell in front of her!

In the classroom, it was crowded and chaotic like never before, and at the same time, it was also quieter than ever before!
Everyone quietly counted the time in their hearts.

One second, two seconds, three seconds...

five seconds! ! !

(End of this chapter)