Chapter 26 Chemistry Class
After Qin Guanqi arrived at school, he saw B sitting in his seat as soon as he entered the classroom.
Tang Qingru sat next to Nie Nanyan, holding a piece of flat meat in his hand, and said with a dog-licking look on his face,
"Nan Yan, don't you try the breakfast I brought you? I went to Gulixiang to pack this for you early in the morning. Their flat pork is the best in the city."
"No, thank you."
Nie Nanyan shook her head with a calm look on her face. If she had been in her first year of high school, she might still feel bored and helpless.
But now I have long been used to it. I am used to rejecting the other party without leaving any room.
"This... By the way, Nan Yan, my friend took a video of the tomb guard fighting last night. Do you want to take a look?"
"I'm not interested."
"Okay...are you thirsty? Do you want me to buy you some water?"
"roll."
As soon as she finished answering, Qin Guanqi stretched his head over and said with a smile,
"I'm thirsty. Go buy some water for me to drink."
"ah!"
Tang Qingru was startled by his actions and subconsciously sat up straight.
After he saw the other party's appearance clearly, he immediately gritted his teeth and opened his eyes and spoke,
"Qin Guanqi! It's you again!"
"Should you go away on your own, or should I tell you to go away?"
Qin Guanqi raised his chin towards the back, his tone and movements hinting clearly.
"Just wait for me, I will be back sooner or later!"
After Tang Qingru finished speaking, he immediately stood up and ran back quickly.
"What a fool."
He shook his head, then sat in his seat,
Smelling the fragrance of the woman next to him, he immediately felt that this was a kind of enjoyment.
The body fragrance smells so good too...
Seeing him sitting down, Nie Nanyan stopped endorsing, his eyes moved, and he twisted his swan-like neck,
"How did you memorize the information I gave you yesterday?"
"Fortunately, I've already carried half of it."
Qin Guanqi took out the review materials and gave them back to the other party.
"Give it back to you, thank you."
"It seems that your memory is very good. You can keep this thing. I have already memorized the contents in my mind."
Nie Nanyan shook his head, supported his head with his left hand, and pushed the information back.
"Okay, thank you, classmate Nie."
Qin Guanqi nodded, flipped through his backpack, and placed the chocolates on the opponent's table.
"Here, this is for you."
"You can take it back. We are all classmates and we should help each other."
"Since we are classmates, we are more familiar than strangers. It is appropriate to give you a box of chocolates as a greeting gift. Accept it, otherwise it will be a waste if I throw it away."
Qin Guanqi supported his head with his right hand, opened the information and continued to endorse,
He memorized half of the review materials in one night, which is no small miracle. Therefore, young people don’t know how much potential they have unless they push themselves.
After Nie Nanyan hesitated for a while, he lowered his eyebrows and thought for a while.
"How about this? I'll be free after school tomorrow evening. We'll find a place to tutor you, and then you can bring the chocolate."
Qin Guanqi immediately looked up at her, with a surprised smile on his face.
"real?"
"Really, so I'll leave this box of chocolates with you first and bring them to me tomorrow."
Nie Nanyan put the chocolate on his table and said.
"Okay, it's settled."
"It's a deal."
Tang Qingru, who was sitting in the back, saw Nie Nanyan putting the chocolate back.
A big stone fell in his heart. He closed his eyes and patted his chest to soothe his emotions.
"It's okay, it's okay. Fortunately, Nan Yan didn't accept her. She is indeed the woman I like."
But then, he stared at Qin Guanqi's back again, his eyes filled with anger.
"Damn guy, I knew you had no good intentions when you transferred to No. 1 Middle School."
"You approached my Nan Yan under the pretext of studying. You must be coveting her beauty, and you want to poach me?"
"Just wait for me, I will kill you tonight!"
He was almost scared to death when he saw Qin Guanqi giving chocolates to Nie Nanyan.
The meaning of giving chocolates is obvious...a symbol of romantic love.
He would send chocolates to Nanyan every festival, but they were not accepted.
Now that he saw that the chocolates sent by Qin Guanqi were not accepted, he suddenly felt happy and felt a little comforted.
After the bell rang, chemistry teacher Wang Hailong walked in wearing glasses and holding course materials.
He put the things on the podium, pushed up his glasses, and smiled faintly on his face.
"As usual, I'll ask people to ask questions before class."
The students in the audience immediately tightened their expressions and sat up straight.
Qin Guanqi looked confused, with an expression that said who am I and where am I?
He couldn't remember how long it had been since he had been asked a question.
There was a brief calm in the class, and a brainstorm was about to begin.
Wang Hailong squinted his eyes and observed each student. He suddenly looked serious and said,
"He Gaohan, listen carefully.
Which of the following statements about the structures and properties of C, Si and their compounds is incorrect?
A. Bond energy C—C\u003eSi—Si, C—H\u003eSi—H, so the stability of C2H6 is greater than Si2H6
B. Cubic SiC is a covalent crystal that bonds to diamond and has a similar structure, so it has high hardness.
C. The valence of Si in SiH4 is +4, and the valence of C in CH4 is -4, so SiH4 is less reducible than CH4
D. It is difficult for Si atoms to form double bonds, but it is possible for C atoms to form double bonds, because the atomic radius of Si is larger than that of C, and it is difficult to form p-pπ bonds."
The classroom was extremely quiet, and Qin Guanqi listened to the teacher's words with a confused face.
What C, Si and other things, he couldn't understand at all.
He Gaohan frowned slightly and began to calculate quickly in his mind. After thinking for a while, he spoke with a firm look,
"C!"
"Not bad. Option C of this question is wrong. We can understand it from two aspects: for elements of the same family, from top to bottom, the oxidizing property of the single substance gradually weakens, and the reducibility of the corresponding hydride gradually increases; hydrogen in silane is -1 valence, and its reducibility is stronger than -4 valence carbon. "
Wang Hailong nodded, then looked at everyone and said,
"Next question, this one is relatively simple, if you don't know it, you will be punished. "
He looked around again and suddenly found a strange figure in the classroom.
Qin Guanqi's face darkened and he subconsciously avoided the other person's gaze. His heartbeat gradually accelerated and he began to become a little nervous.
Don't call me...don't call me...don't call me...
But in class, the more you avoid the teacher's eyes, the easier it is for the teacher to target you.
Wang Hailong raised his eyes, and the lenses looked pale and dazzling under the reflection. He grinned,
"Was this student new yesterday? I didn't see you in class the day before yesterday. Then you can do this question, and let me see the strength of the new student. "
Finished, sent!
Hearing the teacher's words, Qin Guanqi slowly stood up, his face darkened a little,
I have no strength, I have never even read a physics book,
"Listen carefully, new students,
The following description does not involve redox reaction
A, grain fermentation to brew vinegar
B, baking soda is used as a food leavening agent
C, chlorine-containing disinfectants are used for environmental disinfection
D, NO2 in the atmosphere participates in the formation of acid rain"
"Uh..."
......
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