Some people say that mathematics and physics are a perfect match, chemistry and biology are CPs, and chemistry and physics are mismatched, but often mismatched love will be entangled and complicated. For students participating in chemistry competitions, the penultimate thing they fear is this kind of mismatched question.

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Unfortunately, the first big question in this national chemistry competition is the linkage question between chemistry and physics.

This question proposes a cutting-edge technology called "molecular machine". Through a series of chemical processes, the strip-shaped molecule DB is inserted into the ring of the ring-shaped molecule CBPQT, and the number of charges carried by the DB and CBPQT molecules is required.

It is also required to find the simplified structural formula, charges and free radicals of the reduction product, and to calculate the theoretical working efficiency of the molecular machine.

Such a large interdisciplinary topic not only involves physics, but is also deeply related to the pre-objective mathematics of physics. Anyone who is not good at any science can only stare at it.

Now, more than two-thirds of the people in the entire examination room were frowning in pain, but for Qin Ke, this kind of question was only at the level of "somewhat interesting, not too boring", he brushed it off

I picked up the pen and started writing. It took about seven minutes to complete the five short questions of this question.

Now his chemistry level is at the national level. It is not like when he was taking the National Mathematics Olympiad, his math level had reached the IMO level, forming a level advantage. However, his math is too strong, and his physics is also very strong, forming a certain

The additive effect made it easy for him to solve chemistry problems.

Until the last big question.

Because this is a "love triangle" problem that is entangled in the three subjects of chemistry, biology and biology, which most makes chemistry contestants jealous.

Faced with the hysteria of biology, the scumbag manipulation of chemistry, and the yandere combination of physics, more than 95% of the candidates were defeated.

Biological organisms were the first to angrily throw out catalytic enzymes. Not to be outdone, physics resorted to thermodynamics, pressure, and the ultimate trick of gas-liquid two states. Chemistry used molar enthalpy of vaporization to comfort organisms, and at the same time used adiabatic isentropic processes to coax physics.

This makes this morbid love triangle even more complicated and entangled.

Qin Ke pondered for more than a minute before decisively designing a thermodynamic cycle. He used the Kerker equation to find the pressures of the initial state and the final state, and used Kirchhoff's law to determine the temperature of the initial state and the mole under pressure.

The enthalpy of vaporization, and finally using the temperature-entropy diagram to draw the changes in the gas phase and the liquid phase, finally solved this most difficult problem.

In the end, it took him almost 45 minutes to complete all the theoretical questions in the national chemistry competition.

Qin Ke breathed a sigh of relief. It was not easy. He almost failed to get full marks.

Qin Ke was a little surprised by the difficulty of the theoretical questions, so he was more serious and cautious about the chemistry experiment questions the next day.

The chemistry experiment of the national competition is entitled Recovering terephthalic acid from waste polyester beverage bottles. It is necessary to design a reasonable experimental plan from the perspective of actual industrial production as much as possible, that is, using waste polyester beverage bottles in batches and at low cost.

Phthalic acid (TPA) and ethylene glycol (EG) were also safely prepared, and the phthalic acid content of the prepared products was tested using the subtraction method.

The entire experiment time, including designing the plan and recording the results, is only 4.5 hours. It can be extended by half an hour, but 1 point will be deducted for every 6 minutes of extension.

The total score is 40 points. Whether the design plan is reasonable, whether the experimental results are correct, whether the data records are complete, and whether the experimental operations are standardized will all affect the final score.

Because the experiment involves concentrated hydrochloric acid, zinc, ethylene glycol, acetone and many other dangerous or flammable and explosive chemicals, one invigilator will patrol every five candidates to try to avoid accidents.

Qin Ke worked steadily, calmly and meticulously, executing every step perfectly, and finally completed the entire experimental operation in about four hours.

He was not the fastest to complete the experiment, but he was definitely the most stable.

The invigilator showed that he recognized Qin Ke, and finally gave him a thumbs up and directly filled in 40 points in the score column, which made Qin Ke feel relieved.

The national competitions in chemistry and physics have experimental links, and these experimental links are most likely to lose points due to small mistakes. Qin Ke wants to achieve the goal of perfect scores and complete the system's task of "a scholar must sweep all science competitions".

Not easy.

Fortunately, the National Chemistry Competition is now over and has ended smoothly, so I can get full marks without any accidents.

Three days later is the national competition in physics, which is also one day of theory and one day of experiments. For students who participate in the national competition in both subjects at the same time, it is a test for both physical and mental fitness.

Qin Ke did not go far after leaving the laboratory, but waited for Ning Qingyun outside the laboratory building.

There are three floors in the laboratory building, and the chemistry laboratories are all on the third floor. Qin Ke only knows that Ning Qingyun is Laboratory No. 5, but he doesn't know which one it is.

But it doesn't matter. There is only one exit in the laboratory building. If you wait here, you will definitely be able to find your own baby cabbage.

Look at the sky, it's already dusk.

Due to limited space and teachers, the experimental exam was divided into morning and afternoon. He and Ning Qingyun were both assigned to the afternoon.

The exam started at two o'clock in the afternoon. Qin Ke spent four hours doing the experiment. It was already after six o'clock in the evening. Dusk began to fall, and the orange-red sunset fell overwhelmingly, wrapping all the scenery in front of him with a layer of

Red glow.

Qin Ke crossed his arms and looked at the stairs. Candidates were leaving one after another, but he never saw the familiar and delicate figure of his little cabbage.

The faint sound of the fire truck's whistle in the distance brought an inexplicable sense of depression. Qin Ke was thinking about where the fire accidentally occurred when he suddenly heard a girl's exclamation from the laboratory building, followed by a red light flashing and a dull sound.

There was an explosion and thick black smoke spewed out from a certain laboratory.

The corners of Qin Ke's eyes kept beating, and an almost intuitive fear instantly flowed through his body. At this time, many candidates in the laboratory screamed and ran out of the door, running downstairs. Qin Ke's whole body

His hair stood on end, and his brain buzzed and went blank.

This chapter is not over yet, please click on the next page to continue reading! The girls’ exclamations... There were not many girls who participated in the national finals of the chemistry competition... It couldn’t be such a coincidence, right?

No, my little cabbage is so careful and conscientious in doing things, how could something go wrong? How could it cause such an explosion?

Qin Ke kept denying it in his heart, but his body rushed towards the stairs like crazy.

There were candidates rushing down in panic everywhere. Qin Ke ignored them and pushed through the flow of people with all his strength. He yelled "Qingjun" and rushed upwards with all his strength.

There was only one thought left in his mind, nothing could happen to Ning Qingyun, nothing could happen to Ning Qingyun!

His physical strength was originally very good, but when he rushed to the third floor against the current, he felt that his legs were weak. A fear of not facing the unknown flowed through his body. He punched the wall hard, and the severe pain finally stimulated him.

With a fierce and decisive side in his heart, his eyes were red and he shouted: "Qingyun, where are you? If you hear anything, just call me back -"

Still not hearing a reply, Qin Ke gritted his teeth and pushed through the crowd and rushed into the smoke-filled laboratory.

At this moment, he suddenly heard a familiar girl's voice shouting: "Qin Ke! Qin Ke! Are you okay?"

The surroundings were too noisy. There were screams, shouts, calls for help, and cries. But this sound of panic and crying seemed to be magically transmitted through all the noise and into Qin Ke's heart.

In the ears.

Qin Ke suddenly turned back from the stairs and saw a girl with a single ponytail in the crowd of people in the corridor on the other side, with an anxious face, trying her best to squeeze through the crowd and rush towards the smoking laboratory.

I don’t know where this weak girl got the strength. The corridor was crowded with students who wanted to escape or dared to stop to see what was going on. She actually squeezed through and rushed towards the smoking experiment with all her strength.

room.

"Qingyun!"

The moment he saw the girl with a single ponytail, Qin Ke's heart, which was stretched to the limit, suddenly relaxed. He stopped the girl without thinking, and then hugged her tightly into his arms.

Ning Qingyun's whole body froze. After recognizing Qin Ke, she lost strength. She just subconsciously hugged him tightly and murmured: "Qin Ke, Qin Ke, Qin Ke..."

As he shouted, two rows of crystal tears fell down like broken pearls, and in a blink of an eye they were soaked through the clothes on Qin Ke's chest.

This was not the first time Qin Ke saw Ning Qingyun crying. Once Ning Qingyun failed to pass the physical education exam, the girl secretly cried.

But at this moment, he heard the girl in his arms trembling nervously, crying like a child, calling his name over and over again. Countless memories since the two met were accompanied by the girl's crying voice. In an instant,

flooded my mind.

Feeling the deep affection contained in the girl's murmured shouts, Qin Ke's eyes turned red and his throat seemed to be blocked by something.

These shouts merged into the bottom of his heart and his soul.

Qin Ke realized again that he could never leave this girl in his life.

No matter what obstacles or changes there may be in the future, he will never let go of this girl's hand.

"I'm here, Qingjun, I'm here." Qin Ke gently kissed the girl's hair, comforting her over and over again.

…

The accident in the laboratory was caused by an operational error by a female examinee who was too nervous. The invigilators rushed over quickly and controlled the fire in about a minute and successfully extinguished it. There were no casualties, but there were a few.

A candidate sprained his foot while trying to escape in panic.

The female candidate was naturally given a zero score and was required to pay compensation.

Many candidates who were affected and failed to complete the experiment will have to retake the exam tomorrow.

But these had nothing to do with Qin Ke and Ning Qingyun. Seeing that the matter had been resolved, the two quietly left the laboratory building and examination room, said hello to Pang Guangli who was guarding outside, and went for a walk on the street outside.

Fortunately, Ning Qingyun had just completed the experiment and achieved a perfect score of 40 points. Then an accident occurred in the distant laboratory. This unexpected incident did not affect her experimental results.

"How could you think I was in that laboratory?" Qin Ke held the girl's silky little hand and walked with her under the afterglow of the sunset.

"I vaguely heard your shouting, but the surroundings were so noisy that I couldn't hear what you were shouting. Your voice came from the direction of the smoking laboratory. I thought you were trapped inside.

, I ran over as fast as I could..." Ning Qingyun said with some embarrassment.

Qin Ke stopped and stared at her: "What's the use of running in if I'm trapped inside?"

Ning Qingyun bit her red lips, lowered her head, her face flushed: "I...I don't know. I just think about where you are, and I have to go there no matter what..."

"You don't want to die together, do you?" Qin Ke smiled.

Ning Qingyun couldn't help but stretched out her hand and pinched him: "Don't say such unlucky words! I...I didn't think so!"

Qin Ke had long been accustomed to her misunderstandings. At this moment, he looked at the girl's pretty face still stained with tears, as well as her red eyes, and finally his eyes fell on her delicate red lips. He couldn't help but lower his eyebrows.

He said in a voice: "Study Committee, I want to kiss you."

"Here... there are many people here." Ning Qingyun looked around shyly, her face stained as red as the sunset.

This bad guy, if you want to kiss me, just kiss me secretly. Why can't I get away? Why do you ask me this question?
To be continued...