When I got home, after lunch, I continued to write down the first 20 elements of the periodic table on the last page of the Xinhua Dictionary.

However, after watching it several times, the memory effect is still not good.

After all, Mendeleev probably didn't think about how the latecomers began to start their studies.

It is indeed troublesome to have one-to-one correspondence between letter symbols and Chinese characters. After all, with the exception of a few such as sodium (Na), most of them have little to do with sound.

And, with the exception of calcium, Ca, which is often seen in TV commercials, all of these elements are almost scratched.

So, I had to start copying.

However, copying seems to have worked wonders for this kind of memory, and after copying it three times, it is basically memorized.

When I came to the living room, I found that my grandmother hadn't slept yet, so Wu Zhenzhen said, "Grandma gave me the first 20 elements of the periodic table." ”

Naturally, for this kind of interactive game, grandma couldn't ask for it, so she started a spot check game.

"What is Ca. Grandma asked.

"Calcium. Wu Zhen replied with a smile.

"Okay, yes, let's get a hard one. What is the letter of potassium. Grandma asked.

“K。 Wu Zhenzhen replied immediately.

"Are you sure it's just a single 'K'?" said Grandma with a puzzled smile.

"Wait, I'll think about it again. Wu Zhenzhen said while thinking.

"Well, think about it, is there something missing, is there a lowercase 'a' or something at the back. Grandma continued to laugh.

Wu Zhenzhen thought about it, the symbol of potassium seems to be 'ka'?

Wu Zhen remembers very well that the symbol for sodium is 'Na', and the finals of the word potassium also end in 'a'.

So after thinking about it repeatedly, I still chose to believe my grandmother's prompts.

"Well, it's 'Ka'. Wu Zhenzhen said with a smile.

"Haha, wrong, no need to add the 'a' at the end. It seems that I don't remember it, so it's just a little tricky. Grandma said with a smile.

"Grandma is really excessive, don't joke at this time. What if I remember something wrong?" Wu Zhen said unhappily.

"What's this, it changes when you deceive, it means that you don't have a firm grasp. You just take a little more time to remember, why are you blaming me instead?" said Grandma.

So, Wu Zhenzhen had no choice but to continue to look at the periodic table after the "Xinhua Dictionary".

By the afternoon, I had basically mastered these things.

As a result, there was another chemistry class in the afternoon.

I saw Teacher Jiang smile and said, "In the next class, I will silently write the Chinese characters and symbols of the first 20 elements, are you ready?"

"Teacher Jiang, why do you have a chemistry class in the afternoon?" Zhou Wen asked.

"Well, I have something to do the day after tomorrow, so I transferred a class with your teacher Guan. Teacher Jiang said with a smile.

"So, I'm going to write it silently tomorrow?" Yuan Li asked.

"Well, that's right, after all, I said it before, I'll write silently in the third class. Teacher Jiang said with a smile.

"Well, shouldn't the dictation be postponed? After all, there will be one less day of preparation time. Guo Xue asked.

"Haha, learning is about being conscious. Don't bargain for me, everyone. Believe it or not, some students will be able to speak out now?" said Teacher Jiang with a smile.

"I don't believe it. Chen Quan said.

"Okay, now I'll find a classmate who can write silently. Teacher Jiang said with a smile.

Then, Mr. Jiang's gaze began to sweep over the faces of the students.

Naturally, Wu Zhenzhen didn't believe that Mr. Jiang had this level, so he sat there with a slight squint and the mentality of watching the play.

However, sometimes people want to watch a play but they just can't.

The protagonist's work will automatically come to the door.

No, after Mr. Jiang's eyes swept twice, he called Wu Zhen.

Teacher Jiang smiled and said, "Classmate Wu, now you go to the blackboard and be silent." ”

Naturally, Wu Zhenzhen's face looked hesitant.

After all, this teacher is a bit inexplicable.

However, after thinking for a while, Wu Zhenzhen still stepped onto the podium and took the chalk from Mr. Jiang's hand.

Then, the dictation began.

After a few minutes, the first 20 elements of the periodic table and the corresponding element symbols were written on the board.

Since I did watch it many times at noon, it was easy to be silent at this time.

After Wu Zhen stepped down, Mr. Jiang looked at the dictation results on the blackboard and said with a smile: "How about it? ”

"He's To. It's not fair. Wang Sheng said.

Teacher Jiang smiled and said, "Haha, this classmate Wu is by no means a trust. I chose him through the principles of psychology. ”

After a pause, Mr. Jiang continued: "Student Wu, you get up and go down, and you can tell me if you are a trust." If you are a to, then you will not be assigned chemistry homework in the third year of junior high school. ”

Then, Wu Zhenzhen immediately said happily: "Well, I'm Tuo." ”

After all, a year without chemistry homework is simply not too cool.

Naturally, seeing Wu Zhen's appearance, everyone understood that Wu Zhenzhen was not the trust arranged before.

As a result, the so-called benefits of no chemical work throughout the year have come to naught.

Teacher Jiang smiled and said, "I studied psychology very well, so I understand what everyone is thinking." Therefore, when you are in class, you must not make small movements. ”

After that, Mr. Jiang suddenly rushed to Chen Quan's seat in the last row of the second group and said, "Hand over your mobile phone." ”

After Chen Quan reluctantly took out his mobile phone, the children on the side also saw the game scene being played inside.

Then, Teacher Jiang took his mobile phone around the classroom and said, "This is the first case, so no additional punishment will be imposed for the time being." After class, just ask me to get my mobile phone, and if it appears again, it will be smashed downstairs. ”

After that, Mr. Jiang pushed his glasses and immediately walked to the third row, asking the students in the third row to take out their mobile phones.

Then, Mr. Jiang threw his phone downstairs.

After this happened, there was no more mobile phone ringing in the class in chemistry class.

It wasn't until I graduated from junior high school that everyone knew that the classmate in the third row was the real To, and at that time he was just holding a standard mobile phone model.

However, after this happened, discipline was indeed purged.

Even the more boring students will remind each other when they see that the next class is chemistry: "The next class is chemistry class, let's be more restrained in front of Mr. Jiang." ”

Naturally, the dictation answer sheet received when I was dictated on the following day was also quite good.

The whole class handed in the answer sheets that were written in full right.

However, after reading the results of these silent writings, Mr. Jiang did not smile.

After thinking for a few minutes, Mr. Jiang said, "Okay, I'll write it again the day after tomorrow, this time with relative atomic mass." ”

After a pause, Mr. Jiang continued: "Remember, there is a decimal place, and the relative atomic mass of chlorine is 35.5. ”。

In this way, everyone understands that this silent writing activity may be just the beginning.

So, after the class, everyone began to memorize the relative atomic mass.