The others nodded.
"The amount of acid used each time should not be too much. Only 1-2 of the acids should be used for mixing."
A classmate said:
"Also, the ratio of organic acid, lake essence, water and glycerin must be controlled within the range of 18:1:60:1, otherwise it will be difficult to achieve the desired reaction effect."
“And additives…”
As the students spoke, some chemical equations about rust removers were neatly listed and written on the ground.
Looking at these key points, Xia Yue took a deep breath and began the mixing work.
Among all the students, Xia Yue has the steadiest hands, so this task fell on her.
As the reagents dripped into the same container drop by drop, the reactions described in the book appeared in front of everyone one by one.
Watching the solvent evaporate, change color, and make sounds.
The students suddenly felt a different feeling in their hearts, as if they were creating something new with their own abilities.
Full of unbelievability and novelty.
But all these appeared right before his eyes.
As the last drop of reagent fell, the solvent completely returned to calm and the color turned back to transparent.
However, compared with the previous reagents, the new solvent is slightly more viscous.
"This is the rust remover?"
Looking at the solvent in front of them, the students were still a little bit unbelieving.
"That should be it. We have incorporated everything described in the book into it, so there should be no problem."
Li Cheng spoke out.
"Then let's try it now! See if it can remove the rust." Li Qi followed up.
The other students did not suspect anything and watched Xia Yue drop a small amount of rust remover on the rusted saw blade.
One second, two seconds.
One point, two points.
As time goes by, a layer of rust gradually appears on the small piece where the rust remover is applied.
After Wang Bo rinsed it with some clean water, most of the rust on the original area had disappeared.
Instead, the original metallic color of the saw blade is retained.
Although there are still some scattered rust spots, there is no doubt that they succeeded!
"Holy crap?! Did you really remove the rust?!"
"Awesome! Let's!"
Seeing the rust being removed, the students of Class 9 immediately cheered.
A strong sense of accomplishment surged in my heart.
'Who says that our class nine can't handle chemistry? ! '
In the distance, Ren Yan couldn't help but nodded as he looked at the cheering students of Class 9.
These guys are indeed more suitable for studying something on their own.
If you try your best, it's still good.
Ren Yan also smiled knowingly.
At this moment, the ringing of a cell phone interrupted Ren Yan's thoughts.
Taking out his cell phone and seeing that it was an unfamiliar number, Ren Yan answered the call in confusion.
Who would come to me at this time?
After the call was connected, before Ren Yan could speak, the person on the other end asked nervously, "Excuse me, is this Ren Yan, Teacher Ren?"
It was an unfamiliar voice, but it should be a girl, and she should be relatively young.
Ren Yan was even more confused and said, "Yes, I am Ren Yan, who are you?"
However, the other party did not answer Ren Yan's question. After learning that it was Ren Yan himself, he was obviously relieved: "Great, Teacher Ren, I finally found you..."
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