ps: I'm sorry, everybody, I didn't update yesterday because of various things, so ......

Well, I'll admit, I played too high with my roommates yesterday and when I came back, it was half past eight, and then ...... And then there is)

Questions:

[How to identify NH3, CO, CO2?]

Shoko Kirishima

[1. Use an acid-base indicator (red litmus reagent) to identify NH3

2. Identification of CO and CO2 by combustion method】

Teacher's opinion

Kirishima has done a good job of identifying NH3, CO, and CO2 as the three basic gases, but for CO2, we are more commonly identified by clarifying lime water, and CO is identified by discharging gas into clarified lime water after combustion. It's easy to ignore a small place like this, so be careful.

Yuji Sakamoto

[Take a puff, nausea and vomiting is NH3, roll your eyes is CO, and what does not change is CO2]

Teacher's opinion

Sakamoto's answers are always surprising, although they are correct to some extent, and since most of these chemical gases are dangerous and cannot be smelled, please remember how to identify the characteristics of the three gases that the teacher taught.

Akihisa Yoshii's answer

【smell!!

Teacher's opinion

Please don't smell it!!

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A newcomer wants to join the long-formed circle, the best way is to find acquaintances or friends in the circle to introduce you, so that acquaintances' friends, friends of friends, will slowly become your friends, and after getting the approval of most people in the circle, naturally, you will successfully integrate into this small circle.

In fact, Yuuji deliberately exposed his relationship with Yuko Kinoshita because of this, taking advantage of Yuko's popularity in Class A to gain a foothold and integrate into it, although the behavior of using his little cousin to achieve the purpose is a bit not good, but after all, Yuji doesn't really plan to do anything bad, he just wants to be an observer quietly, that's all.

However, things went so smoothly that Yuuji was a little unexpected

That's right, it went too far

As is common in campus plots, new transfer students accept the firsttalk of their enthusiastic classmates in the class, although most of them are 'What is your relationship with Yuko?', 'Are you and Yuko really living together?' - such gossip questions, and the people who ask them are still girls, but it still makes Yuji sigh at the popularity of Yuko in the class.

Of course, this is also because the students of the second A are all good guys, and they will enthusiastically come together to help get familiar with the new students, if all the students in the class are as cold and poisonous as Xue Nai under the snow and goddess...... Ah, no, the ice aura of more than a dozen snow girls is put on, just thinking about it, I feel chills all over my body, and the whole person is embarrassed.

Well...... Anyway,Itai Yuji is a preliminary integration into the second A.,Began his study life in Wenyue School Park.。

After a morning of classes, the effects of the exchange student incident have almost passed, and the second A has returned to the calm that Yuko Kinoshita remembers.

That's right, people who can be admitted to class A in the placement test of the second grade should at least be excellent in learning, and even if the deviation value of their students in class A is very high, it takes a lot of time to study if they want to stay excellent, and they spend so much energy and brainpower, and they can't still talk as energetically as ordinary schools in a little rest time.

All in all, it's really gratifying that the class is back to normal, at least, Yuko Kinoshita doesn't have to be gossiped about by her classmates and the relationship between exchange student Yuji Itai.

Yes, it's business as usual

Except-

"Eh~~ Why is the strawberry milk ice cream in the refrigerator gone?"

"Ah~, it's the same over here...... It's gone."

"There's no one here~"

Lunch break is one of the few times that the second-A students can relax and enjoy the classrooms and equipment in the lobby of a high-end hotel. At this time of day, you can always smell the scent of black tea or coffee wafting through the classroom, hear the refrigerator door opening and closing, or the snacking person letting go and enjoy chewing food......

It's just that today, the girl who likes ice cream desserts accidentally discovered the strange phenomenon that a certain type of ice cream in the refrigerator has completely disappeared, and she can't help but start discussing

"Ahhh~~ I obviously want to take advantage of the lunch break to enjoy some ice cream, who is the one who eats them all and doesn't have a single left?"

"Yes, yes, let me know who she is, and I must punish her for three days...... No, you can't eat strawberry milk ice cream for a week!?"

"Yes", "That's right"......

Just when the girls were concentrating on denouncing the culprit, Yuko couldn't help but look at Yuji Itai with a twitch at the corner of her mouth, with a 'the weather is so good today'.

Hey~~ The cream next to your mouth hasn't dried yet, you strawberry milk ice cream thief!!

Then, Yuuji's head was further away......

"Speaking of which, Yuko, Kirishima-san...... Where's the squad leader?"

"Squad leader, her words...... At this time, I guess I'm going to Class F," Yuko replied after thinking for a while.

"Class F?"

"yes. Yuko sighed a little helplessly, and said as if she was a little worthless for Shoko Kirishima, "Really, I don't know what is good about that guy, obviously the squad leader is such a beauty!"

......

“...... Are you in ...... What do you say??" Yuji had a confused look on his face at the moment.

As a relative, I would like to advise you first of all, don't try to chase our lovely squad leader, because she already has someone she likes. ”

"Oh~~ There is already someone I like......" Yuji pondered the amount of information contained in this sentence, and it took a while to react...... Scratching his head and exclaiming, "That's not right!!Does it matter to me if the squad leader has someone he likes?"

"Oh, even if the squad leader already has someone he likes, can't he stop you?

Yuko looked at Yuji with a bit of surprise and admiration and said, "Although it is certain to fail, isn't it very romantic to be able to overcome many obstacles and do anything for the person you like?

"Well, I admire your determination, but Shoko will definitely blame me if I do this kind of favor...... So, I can't help much, it's up to you," Yuko patted him on the shoulder and gave him a thumbs up, as if to express comfort!

"Hey!" Yuji admired her brain hole speechlessly, and shouted to stop.

"What? Didn't you say I couldn't help much...... Okay, okay, at most, I can only secretly help you, and I can't do anything else, I don't want to be blamed by Shoko......"

Yuuji said that he was really poi today.,It's weird that he hasn't said a word...... Anyway, what are you changing your position for, are you entertaining yourself?

"Hey, hey, it's time for your brain to stop, Yuko!

During the class meeting just now, did the teacher tell me from time to time? Let me follow the class leader to familiarize myself with the campus and so on......

What are you making up in your head!?"

"Ah...... That's it!"

Indeed, it seems to be customary for the class president to bring the newcomers to familiarize themselves with the campus. Yuko touched her head a little embarrassed, just now she was still thinking that if her cousin really chased Kirishima Shoko - although it was bound to fail (I have said it three times!) - but it would be better if it could make 'that guy' raise a little sense of crisis and cherish their squad leader even more, although this ending is a bit tragic for her cousin, but it can be regarded as a happy ending, isn't it?

Although many things are not as she would like......

"Well, the squad leader, she's a little busy and doesn't have time, why don't I take you there?" Out of a certain apology for using Yuuji in her thoughts just now, Yuko volunteered.

"Eh~~ That, what are you taking me with?"

"Hey, what, that reluctant tone, and why did you turn your head, did you have any resentment with me?"

It's really hot, obviously she just wants to take him to get acquainted with the campus, what is this attitude? The guilt that she had just felt about using this guy disappeared in an instant, and was replaced by a full of anger. This kind of guy should be 'used' and 'summoned' to death,...... What, it's just out of kindness, and she wasted a girl's heart in vain. This kind of guy who wastes the kindness of girls at will...... decided, you should be dumped by the girl, and then the end of a lonely life!

"No、That's not what it means~~"

Looking at Yuko Kinoshita, who seemed to be getting fuller and fuller, Yuji explained with a little numbness.

"What the hell is that?"

"It's nothing...... I was just wondering if I would beat me up or something if I followed you."

"Huh, why do you think that?" Yuko's beautiful eyebrows jumped slightly, and she said with a smile that forced her to be an adult, "I'm an excellent student, so I won't casually make a rude act like hitting someone." "So once you do it, it's all very serious about beating it!

"Eh, is that so? But Hideyoshi told me that I was often beaten by you, and told me to be careful. Yuji touched his head embarrassedly.

Yo Sai, Hideyoshi, the death penalty is decided tonight!!

After clenching her fists and making such a decision with gloomy bangs, Yuko immediately took out a good girl expression and smiled

"Adana, people don't do that kind of thing. The lunch break is running out, so if you want to get acquainted with the campus, let's hurry up."

"But ......"

"Sa~Sa~, let's go quickly"

From the perspective of others, it was Yuko Kinoshita with a 'friendly' smile on her face, enthusiastically pushing Yuji Sakai to push him out of the door, and couldn't wait to introduce him to his school...... And then most of them will sigh like this: Sure enough, they are close cousins, the relationship is really good!

After leaving the classroom—

"Poof~"

As a result, Yuji was still beaten!

......