"She likes sky blue the most."

Qi Yunfan said very firmly:

"She usually likes to use sky-blue stationery, and I think she mentioned it inadvertently."

She also loves the sky and the sea, and decided to travel to the beach after graduating from high school.

"She thinks..."

"Uh.... Stop, stop..."Looking at Qi Yunfan's determined little eyes, Su Mu couldn't even start his own flickering Dafa.

Qi Yunfan this time.

It seems to be deeper than Zhou Zeming.

In the end, Su Mu still lent Qi Yunfan two hundred yuan.

However, in order to prevent him from making sand sculptures, Su Mu firmly asked him to deposit the money in the meal card, which could only be used by Qi Yunfan for eating and buying snacks.

After all, he is his brother, and he still has to help if he is in trouble.

But if Qi Yunfan didn't even let go of the money in the meal card, and gave all the snacks to Shi Qing, he really had nothing to do.

Qi Yunfan, it's not stupid enough to be like this, right?

As for the gift, Su Mu thought of a good idea for Qi Yunfan.

Fold a thousand paper cranes!

Well, this is actually not what Su Mu thought.

It was Yan Xiaoke's idea.

Ninety-nine thousand paper cranes symbolize longevity.

It doesn't cost much, but it can still represent your heart.

However, when Su Mu conveyed this method to Qi Yunfan, he resolutely promoted Su Mu of the Thousand Paper Cranes to nine hundred and ninety-nine, and he also wrote a sentence in each Thousand Paper Cranes on his own initiative.

Is this the power of love?

At a certain moment, Su Mu even felt that Qi Yunfan's motivation was even more terrifying than his own system.

......

May 11.

The National High School Chemistry League officially kicked off.

The chemistry league is obviously much shabby than the math competition, and the location is also in Qiantang City, but it is a one-day round trip by bus, and there is not even a place to rest.

There are a total of eight students in Qianbei Middle School to participate in the chemistry league, and the award scoring level is the same as mathematics, but because the number of participants is less than the mathematics competition, the number of admissions in the national competition is relatively small, and the difficulty is even greater.

The leading teacher this time is a young male teacher named Wang Luo, probably because the teaching age is not long enough, and he is obviously much more enthusiastic than Mr. Zhou Liping in the last mathematics competition.

Not only did I care about the situation of each candidate, but I also talked to each student individually when I was in school before.

Of course, this time on the bus, Su Mu did not take the first and second subjects again.

Su Mu's current chemistry level is level five, and in order to be on the safe side, he directly added a little skill point to become level six.

Anyway, the reward for the final first place has a skill point, which is equivalent to him investing a wave in advance.

Because it is the preliminaries of the chemistry province, there are no experimental questions arranged this time, and the experimental questions will not be available until after entering the national competition.

The exam officially starts at 2 p.m. and the exam papers are handed in at 5 p.m.

"Come on! Let's try to get a test result! ”

Before entering the examination room, Wang Gong also gave a pre-competition mobilization to the eight candidates.

The candidates of Qianbei Middle School were also divided into different examination rooms, and after Su Mu got the test paper, he quickly swept through the whole question.

This paper is mainly divided into three parts, inorganic chemistry and organic chemistry, inorganic chemistry in the front, organic chemistry in the back, or not mixed with some structural chemistry.

There are several sub-topics on the transition element oxidation states, acidity, alkalinity and amphoteric of oxides and hydroxides.

There are also a few sub-topics about common insoluble substances, the basic classification and main properties of hydrides, and the basic properties of common inorganic acids and bases.

In organic chemistry, most of the drawings are relied upon, as well as the construction and interpretation of the segments.

There are a total of 11 major questions without multiple-choice questions, which are simple and rude, with a total score of 100 points.

"It's not a big problem." Dede

Su Mu nodded unconsciously.

The first big question is divided into three short-answer questions, and I scanned them carefully.

The first question.

The compound CsAuCl3 is diamagnetic, with 12 Cl- ions around each CS+ and five metal ions around each Cl- ion. The gold ion is a coordination secondary school (also a symmetry center) surrounded by Cl-enclosement. The oxidation state of Au in the compound and its corresponding coordination geometry are written.

It's a very simple question, Su Mu didn't even think much about it, and directly filled in the +1 price and +3 price, as for the two forms of Au, it is obvious that they are straight and flat quadrilateral.

Question 2.

48Ca bombards 249Cf, generating element 118 (Og) and emitting three neutrons, writing the equation for the nuclear reaction of the trim.

is still a scoring question, and after a simple matching, he directly wrote an answer.

4820Ca+24998Cf→294118Og+3·10n

Su Mu yawned.

These questions are not difficult at all, they are too boring, he was already fully prepared, and now it seems that it is not as good as the mathematics provincial preliminaries.

Question 3...

The second question...

For Su Mu, these questions are basically all points, and Su Mu even feels that it is a bit of a waste for him to upgrade chemistry to level six.

This kind of problem, I'm afraid that not all four-level chemistry can be made, right?

Because he took the bus for four hours in the morning and didn't take a nap after eating at noon, Su Mu was a little sleepy.

If there is no good topic, Su Mu estimates that he will be able to finish it soon.

Finally, after halfway through the test paper and doing seven or eight scoring questions in a row, he saw the questions that lit up in front of him.

A crystal belongs to a hexagonal crystal, and the unit cell parameters are a=0.4780nm and c=0.7800nm. The unit cells are projected in different directions as follows.

[Picture]

[Picture]

[Picture]

1. Write the chemical formula of the crystal.

2. Write the coordinate parameters of the A atom located on the vertex and edge of the unit cell: calculate the A1-A2 distance

3. Write out the coordinate parameters of all B atoms

4. If A on the vertex and edge in the unit cell is replaced by another atom C, write the chemical formula of the obtained crystal.

Su Mu touched his chin, this is a crystal structure question.

The basic concepts and crystal systems of the lattice are examined, and there are 14 spatial lattice types according to the macroscopic symmetry elements.

Identification of the centering structure of the lattice and the planar structure.

"It's like a chemistry contest." Su Mu showed a slight smile on his face.

Su Mu silently drew the Cartesian coordinate system of space, combining mathematics and chemistry.

......

"Whew."

It's all done.

Su Mu breathed a sigh of relief.

In addition to the crystal structure, the difficulty of organic chemistry in the back is also not bad, which really makes Su Mu feel refreshed.

However, after all the refreshment, he was surprised to find that the total time had only passed an hour and a half!

You should know that chemistry competitions are usually three hours long, and the papers are submitted half an hour earlier at most.

Then it means that Su Mu has to be salted in the examination room for more than an hour!

.....

PS: I was going to add a change today, but Kawen wrote it, and deleted a chapter after I finished writing.

PS2: Tomorrow will be added, ask for recommendation votes!