At this moment, the screen changed again, and it was another table-- Interesting! He had to take a look. The form looked like this:
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Mercury, the metal with the lowest melting point. Melting point-39.3 ° C, liquid at room temperature, can be filled in a thermometer.
The metal with the highest melting point-tungsten. Melting point: 3410 ° C. Commonly used as a heater.
The most abundant metal element in the earth's crust-aluminum. In daily life, the " silver powder " used to protect steel products was actually aluminum powder.
(4) Silver, the metal with the strongest electrical conductivity. The metal on the inner wall of the household thermos bottle was silver.
(5) Titanium, the most important metal for the manufacture of new high-speed aircraft. It was called the "metal of the 21st century" or "steel of the future" by scientists.
Uranium, the radioactive element with the largest reserves in seawater.
(7) The most malleable metal-gold. The thinnest gold was only 1/10000mm thick.
(8) Platinum, the most malleable metal. The thinnest platinum wire was only 1/5000mm in diameter. Platinum jewelry was made of platinum.
(9) The most abundant metal element in the human body--calcium
(10) Iron, the metal with the highest annual output in the world
(11) The Hardest Metal-Chromite
(12) The densest metal-ossium
(13) The metal with the lowest density--lithium
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After that, the chemistry teacher went through them one by one. She noticed that when he spoke, he would sometimes suddenly raise his voice, as if he was scolding someone. Sometimes, he even gave the people around him a fright! Speechless…
Then, he talked about the chemical properties of the metal. The most active metals were aluminum and aluminum, followed by iron and copper, and finally, gold. Therefore, gold and silver could exist in the form of simple substances in nature. It also said that aluminum has good corrosion resistance, so we can't use steel balls to wash aluminum tableware or things. It will wipe off the protective film and cause rust. In fact, the protective film was a thin film of Al2O3.
Also, he flipped the pages faster than a book (as the saying goes: People turned against each other faster than flipping a book (Is there any connection ==). Some people didn't even finish copying their notes.
"Finally, let's talk about titanium and titanium alloys.
Titanium and titanium alloys were considered important metal materials in the 21st century. They had many excellent properties, such as high melting point, low density (titanium's density was only 4.5g/cm-3), good malleability, easy processing, and good mechanical properties. It was especially resistant to corrosion. Even if it was placed in seawater for several years, it would still be as bright as before.。。。。。”
Upon hearing this, the entire class leader exclaimed, but only his brother and Li Fengyang remained the same.
"So, it has a good compatibility with the human body. For example, if you have a fracture, you can put it into your body. If it's not corrosive enough, it will rust in your body.!”
o(headquarter_headquarter)o Haha ~~~ I didn't expect him to be so humorous. I couldn't tell! The whole class instantly changed from "Wow--" to "Haha--". The whole process was faster than the chemistry teacher flipping the pages!
(Public: →__→||| B, what are you talking about…。）
"Because of this, it is widely used in rockets, missiles, space shuttles, ships, chemical and communication equipment.”
As soon as he finished speaking, the bell rang!
"Alright, that's all for today. Homework (raise the volume again to emphasize)!
New Strategy, pages 103 - 104.
Class dismissed!"
"Thank you, teacher!" The whole class stood up and went to line up outside.
"Where are you going?" I asked the little boy.
"Go to sports training. We'll be taking the sports bonus test.”
" What?!" I was shocked!
"What's so difficult about taking the PE exam?" When I heard my brother's words, my expression immediately changed! What was the meaning of showing off when he knew that he was bad at sports!!!--
"When the time comes for the sports exam, the 200m sprint is a must. There was basketball, soccer, level three frog jumps, and sit-ups.。。。。。The 200m sprint was 28 seconds for men and 32 seconds for women. 18 seconds for men and 22 seconds for women. 22 seconds for men and 28 seconds for women. The third-level frog jump was 8 meters for men and 6 meters for women. There were 65 men and 60 women doing sit-ups.。。。。。Then let's see which one you want to choose. Only one or two students in our class chose soccer. The rest chose basketball.”
F * ck! Are the boys in our class so confident that they are good at basketball?! What a joke!
"Speaking of which, you remember it quite clearly.”I said.
"Of course! I plan to apply for sit-ups. And the eighth period is training! The 200-meter run and sit-ups on a single day, and basketball on a double day. The teacher had drawn the court, so all he had to do was follow the teacher's drawing and throw the ball to the red cross on the square.”
Soon, they arrived at the field. The basketball court was indeed as the little boy had said. There were dribbling routes and shooting points on the ground. There was indeed a red cross on the basket. The playground was wide and beautiful (why was it repaired faster than I turned the playground into ruins at that time =__=__=__=||| |~~~~众：=__=||| Who knows you...) However, when he thought of the 200m sprint, basketball, and so on.。。。。。It makes me nervous. I'm most afraid of the 200m sprint, but I can't always surpass them. I still need 32 seconds to pass?! What a joke! I rarely play basketball, 22 seconds? o()o Sigh ~~ If it was my brother, I think he would only need less than 10 seconds to slam dunk. Not to mention football. Sit-ups? At most, there would be 41 of them. How could he achieve one per second in one minute? However, the boys were even worse off. They needed to kill two in a second to get it done.。。。。。It seemed that I was not good at sports. Even the 1000m race that I was best at had only been practiced once with my brother. After that, I didn't practice anymore. o()o sigh ~~~ When I go back, how am I going to report to the principal?
"So it's not too late to do it now." Li Feng said to me.
"I will help you." Feixue Yuhong said the same.
But the problem now was, why were all the girls running around in skirts?! When the dress was lifted, wouldn't all the boys see all kinds of underwear of different colors?! I suddenly had an ominous feeling...。。。。
"No, I won't ~~" The kawaii girl Ling Ziqian, who was sitting in front of her brother, walked over and said to us cutely,"
"Our school's skirts are made of special materials. No matter how strong the wind is, it won't blow up.”
" What?!" The four of us were shocked! Even in the academy, there was no such good dress. If she had known earlier, she would have asked the chemistry teacher and solved all the mysteries.
(Everyone: What does it have to do with you only knowing now?)。。。。。）
"However, we don't know what special material it's made of, but it's very comfortable to wear.”Nonsense…
God…What…Khan||| ~~~ I have nothing to say…。。If he used any heavy metal, wouldn't he die without a burial place?!
(Everyone: Then why didn't they die without a burial place?)!-^- (Pouting)
。。。。。。Uh... This... It's hard to say, oh! I'm going for a run. I'll go first!
(Everyone: Hmph! He didn't even know how to find a better excuse.）
"Hey!"
"Eh?" Brother stopped me.
"Don't forget that you're not wearing that kind of dress now.”
Ah! My-gad! Fortunately, big brother reminded me, and Feixue Yuhong also realized it.
"Then we don't have to run anymore?!”I was a little excited, but my brother's face instantly became so helpless that even a ghost would be scared to death! I was indeed a little afraid at that time. That speed was even faster than light. Could it be that this was one of the characteristics of light element students?!
"What a mess!"
"What do you mean by 'what mess'? You do everything faster than a super impatient person like me.。。。。。(I haven't finished the ending yet)"
"When you're angry, you're even crazier than me.”
Clang! A head-on blow! A huge stone was pressing heavily on my head.
Ah! That's right! Today was a single Wednesday…。。。Then... Isn't that…Running again?
Drink!!!!!!!!!!!!!!!!!!
The sound broke through the sky!
The whole school was shocked and suddenly fell into an awkward situation.|||||| bbbb~~~~
"You four!"
"Ah?" Just as I was caught in an awkward whirlpool, a shout suddenly came from behind me. The four of us turned around to look!
"Let's go to the Academic Affairs Office." So it was that " Jiang Jieshi's daughter " Jiang Menglin who looked very similar to Hatsune Miku. Look at her magical appearance. Don't think that just because she's the class monitor, she can do whatever she wants and talk to us in that arrogant and complacent tone!
This book comes from：m.funovel.com。