"The main component of 502 glue is ethyl cyanoacrylate, referred to as ECA, which is highly volatile and easy to carry out anionic polymerization under the initiation of alkali.

Human sweat contains water and amino acids, water contains anions OH, and amino acids also contain a small amount of amino acid anions. The ECA volatilizes to the sweat handprint, and the anionic substances in the sweat trigger rapid polymerization to form a milky white polymer, and the handprint is revealed. "A meal of popular science is as fierce as a tiger, and the bottom is either two or five.

Everyone: "??? "They all seem to understand, but looking at that thing, they are confused.

This group of children, in their own young minds, once again felt the crushing from IQ.

are also learning molecules, why is Bai Nuan so tall even to prove his innocence?

And they just look at it with a blank face.

What the? What is it? God, what's that?

It's like two five.

For a moment, everyone's gaze at Bai Nuan was a little complicated.

Compared to this blow, everyone doesn't care much about the truth of the matter.

Forget it, it's all like this, who cares about those things.

But Anyang won't care!

He watched the crowd gradually deviate from the topic, and immediately opened his mouth to pull back.

"So, can you prove that Nuan Nuan didn't take her things, right?" An Yang looked at the chemistry teacher with an uncertain look in his eyes.

"Yes!" The chemistry teacher was excited, he always thought that chemistry was an uncommon subject, who knows! Just today, his students told him the real usage of chemistry!

It's also fantastic!

He wanted to howl twice, but his age and identity didn't allow it, so he could only endure it and hold the shelf.

"Then teacher, can you help call our homeroom teacher, I want to solve this matter." An Yang's eyebrows and eyes were soft, and when he lowered his eyes and spoke, he couldn't see his gloomy appearance at all.

"Okay." The chemistry teacher is in a good mood right now, saying what to do.

I went straight to it.

Liu Nannan looked at An Yang, her eyes were red, her body was trembling, and finally she calmed down a little: "I'm sorry Bai Nuan, it's me who blames you, I lost my money, I'm too anxious, I'm sorry." ”

Liu Nannan apologized to Bai Nuan in front of everyone, her posture was very low, and when she raised her head, her tears couldn't be stopped at all, and she choked up.

Bai Nuan glanced at her indifferently, opened her mouth to say something, and finally thought about it, forget it, you have to be forgiving and forgiving, that is, a teenage girl.

"Hmm." So she just responded, and she didn't make any extraneous branches, as for whether Liu Nannan's money was lost or what's wrong, she won't say anything.

It's definitely not because the explanation has to say a lot.

At this time, the head teacher came, and saw such a group of students surrounding, and on the way here, he also heard some things from the chemistry teacher, and almost understood.

"Where is this?" The head teacher asked.

"Teacher, I apologized to Bai Nuan, and she forgave me." Liu Nannan said this sentence first, his eyes were red, and there seemed to be a little bit of powder on his face......

"Oh...... That's it, that's it......"

"Teacher, I have something to say." An Yang directly opened his mouth and cut off the head teacher's words.

Hearing this familiar voice, the head teacher frowned slightly and looked sideways.

An Yang was standing next to Bai Nuan, and he was next to her!