For a while, Chen Yue didn't quite understand what Song Yao was going to do, just quietly looked at the screen, waiting for his reply.

Song Yao didn't explore Chen Yue's habit of abandoning computers and being with elderly machines, and replied lightly: Open a video.

Video?

Chen Yue glanced at the ghost drawing talisman on the desk and replied: Okay.

So refreshing?

Song Yao was overjoyed, pursed his lips and chuckled, and then hit him.

Chen Yue just clicked answer, and in a blink of an eye, the screen was occupied by a handsome face like a demon.

Suddenly, I don't know if it's because of the first video with others, or other inexplicable feelings. There was something itchy on the tip of my heart, as if something strange was about to sprout.

Is Song Yao too photogenic, or hasn't she carefully looked at the handsome face next to her on weekdays?

Even the movements of frowning, pouting, and blinking seem to have become different from usual......

"Potassium permanganate?! Whoever wants to see this, give me the front lens! ”

Song Yao's impatient voice woke up, and she was addicted to beauty and couldn't extricate herself.

"Uh...... "Damn!" Chen Yue supports her forehead, Song Yao's broken mobile phone beautification function is too powerful!

Black art! Definitely sorcery!

"Don't uh" Song Yao was a little big-headed, daring to love this girl who was still doing her homework at night.

It's clear that he's working so hard, but he always says that he's lucky, which is really stupid.

Originally, he didn't want to see such a person, but he was mixed with typical cases like Du Jingchen and Chen Yue, and he was the one who fell into it.

"You've just been doing your homework?" He slowed his tone.

At the same time as Song Yao said this, Chen Yue also turned the front camera.

Chen Yue's face became whiter and whiter under the white light, and it was a little frighteningly pale. The hair that was scattered and messy, Song Yao thought, was mostly caused by scratching his ears and cheeks when he was doing the question. She was also like this a lot at school, and when she was thinking, her fingers habitually curled her hair.

But most of the time in school, my hair is tied up, and I don't mess around.

At this moment, the loose hair modified her already small face even smaller.

"No, it's just sorting out your notes", Chen Yue pouted, "It's not me who said, Song Yao, can you write more neatly?" ”

Her rather complaining words awakened his mind, "Why is it irregular?" Our handwriting is so similar, you can't even recognize your own words, do you? ”

"Huh" Chen Yue snorted, "Our characters are quite similar, but I'm walking on the road of socialism with Chinese characteristics, and you're cultivating ghosts!" ”

"Okay, okay, just when I'm repairing tracks" He didn't open the video specifically to argue with her, besides, men should let their little girls go.

"Say, which word, which symbol you can't understand, the rail engineer, online for you."

At this moment, Chen Yue reacted, and the track that Song Yao thought was different from the ghost path she said.

She couldn't help but laugh.

"Laughing at what? Hurry up and talk about the problem, and it's time to get down to business. ”

"It's nothing," she still couldn't help but smile, shaking her head as she turned the camera to the rear camera, "See for yourself, how much iron is this?" ”

"Ferric tetroxide, two ferric iron, one ferric iron......" Song Yao looked at the workbook on the screen and analyzed it for her seriously.

He didn't plan to do this workbook, but somehow learned Du Jingchen's set.

For the sake of Chen Yue, a chemical scum, I finished the entire chemistry study booklet. It was a multiple-choice question, but he filled the blank space with ideas for solving the problem. It was a bit fast at the time, but now it looks a little sloppy.

Originally, a chemical equation was just not able to understand the characters, and it was solved in three or two minutes. However, Chen Yue found a few more questions that had been bothering her for a long time. Although Song Yao was very helpless and unwilling to look at the black and white words on the screen, he couldn't bear to refuse listening to her eagerly looking forward voice.

"Song Yao, look at this question, isn't the amount of hydrogen ions in 1L of 1mol/L hydrochloric acid 1mol?"

Hearing this, Song Yao had a little brainache, such a question is already a scoring question among the basic questions. How could she still be stuck in such a problem?

"Water ionizes hydrogen ions and hydroxides, so the total amount of hydrogen ions is not 1mol." He patiently explained.

"Oh~" Chen Yue nodded clearly.

I flipped through my notebook again and asked, "Are the positive divalent copper ions blue?" ”

"Well, it's blue."

"Why is the copper chloride solution green?" She asked, puzzled, "I remember one of the coppers was green, um......"

She was thinking about it for a long time, and Song Yao responded with understanding: "Basic copper carbonate." ”

"Hmmm! Right! Chen Yue was excited, "Could it be because the carbon dioxide in the air enters the solution and forms basic copper carbonate with copper chloride?!" ”

"Huh?" Hearing this, Song Yao couldn't cry or laugh, "Okay, okay, don't guess, I shouldn't tell you anything about basic copper carbonate." ”

"Why is that?" Chen Yue looked at his ridiculous appearance and pursed her lips.

"Actually, you just need to remember that the normal concentration of copper chloride solution is green and you can cope with the exam, but you really want to know what the reason is. I can also tell you, but I'll only tell you this time, you have to remember clearly, and you are not allowed to say anything in the future because of the generation of basic copper carbonate! Song Yao pretended to be stern.

When he thought of what she had just said about generating basic copper carbonate, he still had some palpitations, what was in this girl's head. How dare you think about this? Challenging authority?

If Du Jingchen's old old-fashioned voice hears this, it is estimated that he will have to be angry with Chen Yue.

But come to think of it, everyone who makes a mistake is challenging authority. Created language, tampered with history, subverted politics, controlled the earth, defied the laws of physics, changed cell structures, synthesized new substances.

"Uh-huh", Chen Yue nodded obediently.

"Normally, copper ions are in aqueous solution, in fact, in the form of copper ions tetrahydrate. Hydrated copper ions are blue, so most of our common copper salt solutions are blue, such as copper sulfate solutions and the like. ”

"In the solution of copper chloride, there are not only hydrated copper ions, but also chloride ions combined with copper ions to form tetrachloride copper complex ions, and the color of tetrachloride copper complex ions is yellow."

"Then, the two colors of blue and yellow are mixed in equal proportions to the green."

"I made it clear, it's the ratio, don't be mistaken. We believe that the general copper chloride solution is green, but if water is added to the copper chloride solution, the concentration of chloride ions in the solution becomes smaller, and the hydrated copper ions are relatively increased, and the solution mainly shows the color of hydrated copper ions. ”

"So the copper chloride dilute solution we see is generally blue, and the concentrated solution is generally yellow."

"Do you understand?"

"Uh-huh", Chen Yue nodded like pounding garlic, although she didn't understand what "copper tetrachloride" was, but she roughly understood the origin of green.

However, she seems to be unexpectedly more interested in the person who opened the door to the new world than she is about the curiosity she has just opened.

"My mother, Song Yao...... Bah! Song Dashen, how do you know everything?! Chen Yue's admiration was beyond words.

It turns out that some people's charm can really be so strong that you can't stop it.

Suddenly, she seemed to be able to understand why Li Yaoyao liked him because Teacher Shen gave her a question.

"Young man, you must always believe that I have crossed more bridges than you have walked." Under Chen Yue's praise, Song Yao suddenly stinked and farted.