My winter break homework was exposed, and I, a vocational school student, am now being snapped up by

No achievements?

While everyone else was shocked by Lin Chen's answer.

Lin Chen, however, was puzzled.

I embarrassed my teacher, so why didn't the system notify me of the achievement?

Doesn't slapping the teacher in the face deserve an achievement reward from the system?

Just then, Li Yan suddenly said, "Hey classmate, have you done this question before?"

"No."

"really?"

Li Yan looked incredulous: "This question is from past years' college entrance examination chemistry questions. If this is really your first time doing it, then it's indeed quite good."

"But I'd like to pose another question. Are you confident you can answer it?"

No, so these are past years' college entrance exam questions?

No wonder Lin Chen solved it so quickly.

He must have done it, right?

Many students secretly realized that this was how it was.

They also found it hard to believe that a guy who sleeps in class could be better at chemistry than them.

Rather than believing that Lin Chen is a top student.

It's better to believe that he has done similar problems before.

Lin Chen understood.

No wonder the system didn't trigger an achievement.

So it turns out Li Yan just doesn't have the good fortune?

Since you're not convinced, then we'll keep doing it until you are!

"Alright, teacher, then let's have one more."

Hearing Lin Chen's confident tone, Li Yan immediately presented another question.

The question that was set this time was one that Li Yan originally planned to use in the monthly exam, a question that would result in a deduction of points.

It is specifically designed to differentiate between high-achieving and average students in exams.

It's very difficult.

An unknown compound contains three elements: A, B, and C.

Analysis of the compound's properties revealed that it has good electrical and thermal conductivity and is not easily oxidized in air.

Furthermore, the ratio of A, B, and C in the chemical formula of the compound is 1:2:3.

If the atomic weight of A is 10, the atomic weight of B is 20, and the atomic weight of C is 30, what is the chemical formula of the compound?

"Student, remember to write down your problem-solving approach as well."

This time, Li Yan didn't forget to remind Lin Chen to write down his thought process.

However, as soon as he finished speaking, he saw Lin Chen pick up a pen and start writing.

As he wrote, he explained to the others:

"This question involves the properties of elements and the determination of chemical formulas."

"First, according to the description of the question, the compound has good electrical and thermal conductivity and is not easily oxidized in the air, so it can be inferred that the compound contains a metallic element."

"Then, based on the ratio of A, B, and C in the compound's chemical formula being 1:2:3, and the atomic weights of A, B, and C, the compound's chemical formula can be calculated..."

Looking at Lin Chen's answer.

Li Yan was completely dumbfounded.

He admitted that this question was very difficult.

To solve this, you need a complete grasp of high school chemistry knowledge.

Only by mastering chemistry can you quickly solve this problem.

Li Yan thought about this problem for a long time before he finally figured it out.

As a result, Lin Chen...

He solved the problem right after I finished writing it?

This is so disrespectful to the fruits of his labor!

Although I think so.

But Li Yan was already somewhat convinced of Lin Chen's abilities.

No wonder he dared to sleep during chemistry self-study class.

This is a student who has truly mastered chemistry.

Li Yan was convinced, so the others were even more convinced.

"Today I really got a stab in the butt, what an eye-opener!"

"Yes, yes, yes, Lin Chen is like a sparrow pecking at a cow's butt, a sparrow eating a cow's udder!"

However, while most people were convinced, some were not.

"Teacher, did he do this problem beforehand?"

Lu Weiguang stood up and questioned.

He just wouldn't accept it!

This kid is sleeping in biology class!

Sleeping during chemistry study hall!

How could a poor student who sleeps in class so easily solve a chemistry problem that even he himself doesn't quite understand?

Does he study late into the night every day?

A person who does one chemistry test paper every day.

They're not even as good as a bad student who sleeps in class?

"This one……"

Although Li Yan was convinced, he didn't really want to let Lin Chen off so easily.

After all, what if someone follows suit and sleeps during self-study class?

He cannot let the atmosphere of learning be ruined because of one person.

Lu Weiguang's words gave Li Yan a way out.

“This student has a point.”

"And even though I promised you, it doesn't matter if the other classmates disagree!"

"So let's do one more! If you get this one right too, you can sleep through not only chemistry study sessions, but also my chemistry classes from now on!"

"Okay! Teacher, hurry up and give me the questions!"

Lin Chen knew from the fact that the system still hadn't popped up any notifications that things were likely to take a turn for the better.

Now that I hear it, it's indeed true.

But would someone with such extraordinary abilities be afraid of the teacher cheating?

Unless this chemistry teacher can come up with questions that go beyond the university level.

Otherwise, bring it on!

"Here I come, watch out for this question!"

Li Yan offered a reminder.

Because the questions that follow are really, really difficult.

This is a problem that Lin Chen could never solve.

Needless to say, the difficulty is immense.

This is because Li Yan obtained a chemistry math Olympiad problem from his old classmate!

As a renowned high school chemistry teacher, Li Yan has many former classmates who now hold positions at top universities across the country.

One of them is specifically responsible for creating questions for the National Chemistry Olympiad.

This question was given to Li Yan by the other party.

Because the questions were too difficult, even somewhat beyond the scope of the curriculum, they were never actually used in the competition.

In a quartz tube, iodine reacts with a thin sheet of transition metal M at 280 degrees Celsius to form a dark brownish-red solid X on the metal surface.

When X is heated in a vacuum at 300 degrees Celsius, it decomposes into a red solid Y and a purple gas, losing 29.4% of its weight.

When Y comes into contact with dry air, it transforms into a dark red substance Z, increasing in weight by 5.25%. Z has one more oxygen atom than Y.

After reacting a sulfate of M with the bidentate organic ligand 2,2'-bipyridine (abbreviated as bipy, molecular weight 156.2) to the system, a sufficient amount of methanol solution of KI was added to the system to obtain green crystals A.

A reacts with Mg to give blue solid B, which is further reduced by LiAlH4 in THF to give red solid C.

If B reacts with iodine, it first yields another red solid D. D then reacts further with iodine and turns back into green crystal A.

Elemental analysis results show that A can be regarded as a complex of Y bound to bipy. Compared with Y, A has a weight increase of 157% and does not contain solvent molecules.

Please derive the chemical formulas of A, B, C, D, X, Y, and Z.

When they saw the question Li Yan had set, everyone below was completely dumbfounded.

If some people could figure out the approach for the first two questions...

But this question truly left them completely baffled.

"Who am I? Where am I? What's on the blackboard?"

"I've studied chemistry for three years in high school, so why can't I even understand the questions?"

"Chemistry is terrifying! I'm so glad I didn't choose chemistry."