Original subtitles

[To the teacher who is teaching seriously with a smile. I]

[want to cum on your head...] [Facial on female teacher!]

Ah, this is fine

give me a break

okay, everyone, take your seats.

Let's start class.

Yes, stand up.

Both hands, bow.

Good morning.

Good morning.

Now, before we start class, I would like to take attendance.

I'm coming.

Asao-kun.

Yes.

Ishida-kun.

Yes.

Ueno-kun.

Yes.

Otagawa-kun.

Yes.

Kato-kun.

Kato-kun.

Haven't you come?

It hasn't arrived yet.

Is today a day off?

Aren't you slacking off?

Skipping

kondo-kun.

Yes.

Shimomura-kun.

Sonoda-kun.

Yes.

Tachibana-kun.

Yes.

Tsuda-kun.

Yes.

Toyama-kun.

Toyama-kun is

I got a call from home this morning saying that I was sick with the flu.

Everyone is suffering from influenza and

colds, so please take good care of your health.

Yes.

Haneda-kun.

Yes.

Hayakawa-kun.

Yes.

Higuchi-kun.

Yes.

Honda-kun.

Yes.

Mashima-kun.

Yes.

Miyamoto-kun.

Yes.

Momoi-kun.

Yoshikawa-kun.

Yoshida-kun.

Yes.

Wada-kun.

Yes.

Kazuumi-kun.

Yes.

Wakabayashi-kun.

Yes.

Yes. That's all for attendance.

Kato-kun and toy am a-kun are absent today.

The days are still cold and colds are prevalent.

In the group next to me, 10 people were absent yesterday due to colds.

Everyone please be careful and gargle and wash your hands regularly.

Yes.

That's a good reply.

Now, I would like to start today's Japanese class right away.

Today I would like to explain and match the answers to the quiz I took last week.

Yes.

I gave the answers back to everyone in the last class.

Yes.

Don't just ignore the test once it's over;

Reviewing it based on it is the real way to study.

Then, the teacher will read the problem text.

As people born into this world, we all have to live our lives.

Even if our circumstances, environment, and conditions

are different, everyone has to live their own life.

Since you are born, you must live until you die.

Even if it wasn't your will to be born, you have to live if you want to live.

This is probably because it is a starting point

that cannot be denied, even if it is irrational.

Also, as we live our lives, we cannot afford

not to think about anything or anything.

There may be times when you don't think about

anything in particular because you're still young,

or you live your life vaguely, or you're fascinated

by something and live your life immersed.

However, even if you have a period like that, it won't last forever, and

even when you don't seem to be thinking about things in particular, when you

look back on it later, you can see that many things happened in bits and

pieces at that time. You feel something and realize what you were thinking.

There is also the phrase "completely unrivaled," but this

refers to a state in which one is free from thinking or blind

thoughts, unless one is lacking in a clear or organized way of

thinking, but it does not mean that one does not think at all.

Once again, if we broadly refer to thinking

and thinking, rather than planning or thinking,

for each of us, regardless of occupation or

religion, thinking and living are almost inseparable.

As long as we live as humans, thinking and thinking are part of living,

and we can even say that they are the very activities of living as humans.

If we look at living and thinking in this way from a bird's-eye view,

it is almost impossible for us to live well without thinking carefully.

To think well and live well is to think actively within the

triangle and live in a way that is at least as skillful.

Yes, that's all for the problem statement.

Well, it's been a while since the test, but

do you remember the passage and the questions?

Now, let's start with problem 1.

Problem 1: Convert the katakana from a to f into kanji.

First of all, it's a.

I have to live my life. It's a lifetime.

The teacher will write down the answers.

This question was answered correctly by everyone in the class.

The correct answer rate is 100%.

Next is b.

This was surprisingly said by someone who was wrong.

If you made a mistake, please take this opportunity to remember it.

You just need to memorize kanji.

Once learned, it is difficult to forget.

Next is c.

This is a bonus question.

Next.

Well, I guess I'll have to ask someone to give me an answer.

Well, that's right.

Well then, I always guess in list order,

I guess I'll go in the opposite direction today.

Wakabayashi-kun, please answer on the spot what kind of kanji it is.

I agree. That's correct.

Well done.

Now, please answer e and f in succession.

E. Prototype production and trial production,

f. Things like thinking are inseparable and inseparable.

Well then, I wonder if I can seriously answer wakabayashi-kun's ordinary works.

Yes, the prototype is a search product. I didn't understand indivisibility.

Well, inseparable, yes.

This is the character.

Please remember this at this moment.

This concludes the kanji problem.

I agree. No matter what test or entrance exam question

you have, kanji questions will always be asked.

There are scores of 10 to 15 points, so it is very important.

Mastering kanji perfectly will be a

shortcut to solving entrance exam questions.

Please keep this in mind as you study.

Yes.

Is there a test, kanji?

I agree. I think it's a good idea to carry around some kanji practice books.

Do you all have kanji practice?

I have an atomic notebook.

That's nice. Please buy it as a Christmas present.

Yes.

Now let's move on to problem 2.

Problem 2. The in the sentence together with the

word "muso" below form a four-character idiom.

Enter the two kanji that apply to.

Yes. It becomes a four-letter idiom, musou.

What applies?

Kondo-kun, do you understand?

Um, sorry. I don't understand.

Is that so. What about you in tachikawa?

Um, sorry.

I don't know.

Now, does anyone know?

Raise your hand if you answered this question correctly.

1, 2, 3, 4, 5, 6.

There are only 6 people.

Well then, I guess I'll choose from among the people who answered correctly.

Yoshida-kun, please answer.

It is unrivaled.

I agree. Well done. That's correct.

Do you know what this musou means?

Don't you all understand?

This means that all distractions disappear and the mind becomes transparent.

A large number of four-character idioms appear on the test,

so I think it's a good idea to memorize them little by little.

Well then, next. I'll keep going.

This is problem 3.

Problem 3.

Choose each word from the following that fills the ×

and △ parts in the sentence, and answer using symbols.

First, x. There are four options:

Ah, but,

yes, and.

Uh, so,

oh, by the way.

Those who answered yes, please raise your hand.

Those who answered yes.

Ah, that's a lot.

Those who answered yes.

The person who answered yes.

Ah, that's quite a lot.

The person who answered yes.

There aren't any.

Well, sir, here's the answer.

The most common answer was "because it's fun."

That's right. That's correct.

Everyone is excellent.

I think this is a difficult problem.

I think this was one of the most difficult questions on this test.

Everyone is amazing.

You've been studying well.

It's a big deal.

Now you understand.

I don't know about that.

I understand.

Please keep up the good work.

The first half of the sentence and the second half of the sentence are.

I am proceeding with my thesis semi-theoretically, so.

That's why it's appropriate.

Next is the part that goes into the triangle.

Ah, the sense of fulfillment.

A blank feeling.

Uh, feeling of happiness.

Oh, the feeling of loneliness.

The teacher will give you the answer here.

Ah, the sense of fulfillment.

Here, there are people who answered correctly

and people who answered incorrectly.

It was about half and half.

If you read the context from the paragraph before that part,

it follows that feeling of fulfillment is the most appropriate word.

When you don't understand a problem like this,

going back to the nearest position from that part,

if you read it again, you'll get a hint.

If you still don't understand,

go back and read it a little further.

Then, words that should be included will naturally come to mind.

Please approach this kind of problem in this way.

Okay, so this is the last question.

This is problem 4.

Which of the following a to g is the main idea of ​​the text?

This is a type of problem that always comes up as a summary problem.

Unless you fully understand the author's intent of the text.

So let's take a look at your options.

Must be intentional.

This is where the analysis comes in.

Living without thinking is not living as a human being.

By actively thinking, we gain the ability

to adapt, which is a condition for survival.

A desirable life is to think well with a

good head and live well with a healthy body.

If you have enough time for the test when you face

the problem, it may be helpful to read the text again.

Now, let me tell you the correct answer.

Was it right?

That's amazing.

These three things are different from the content of the main text.

Well, everyone, were you able to deepen your understanding

through this answer matching and explanation?

That was great.

Well, everyone, let me explain it again from the beginning.

Problem 1: Convert the katakana from a to f into kanji.

First of all, it's a.

It's a lifetime that you have to live a lifetime.

The teacher wrote this on the blackboard earlier.

This had a 100% accuracy rate.

Next is b.

Did you remember this too?

Remember those who made mistakes.

Next is c.

I also wrote this earlier.

This should have been a bonus question.

Did you all remember?

Next.

Fierce thoughts while standing.

Did you remember?

Now, let's memorize e and f in succession.

It is inseparable from the prototype.

This was a little difficult, wasn't it?

Inseparability is the inextricability of wonder, the

possibility of possibility, and the inseparability of time.

I will now write it as indivisible.

Did you remember?

Let's remember it well.

Mastering kanji perfectly will make it easier to pass the entrance exam.

Now, let's read the question again.

There were a lot of humans here. Please be careful.

At that moment, I feel many things in fragments and realize what I was thinking.

There is also a term called "regret without thought," but this means that

unless it comes from a lack of whiteness or a well-organized way of thinking,

it refers to a state where one's self-confidence and fierce determination

are lost, but it does not mean that one does not think about anything.

Once again, if we broadly refer to thinking and

thinking, rather than contemplating or thinking,

for each of us, regardless of occupation or

religion, thinking and living are almost inseparable.

In this way, if we see that living and thinking are inseparable,

although it is indivisible, it seems that many children did not understand

the meaning, so I will make it their homework to find out by next week.

Are you sure?

What? On the Internet?

Get into the habit of looking up things in a

dictionary instead of on the Internet. May I?

Yes, that's good.

Thinking well or living well means thinking

proactively and living in a way that is rewarding.

Yes, that's all for the problem statement.

Now, let's read the question again.

As people born into this world, we all have to live our lives.

Even if our circumstances, environment, and conditions

are different, everyone has to live their own life.

Since you are born, you must live until you die.

Even if it wasn't your will to be born, you have to live to live.

This is a starting point that cannot be denied, even if it is irrational.

Also, as we go through life, we cannot afford not to think about anything.

Maybe you're still young, or you're living a vague life, or you're

fascinated by something, and you're living a life full of passion.

There will be times when you don't think about anything in particular.

However, even if there is such a period, it will not last forever.

And even when it seemed like I wasn't thinking about anything in particular,

when you look back on it later, you realize that you felt

and thought a lot of things in fragments at that time.

There is also the word "unrivaled," which refers to a

lack of materials and a well-organized way of thinking.

Otherwise, it refers to a state of being free of thoughts and

blind thoughts, and does not mean not thinking about anything.

Yes. Does anyone have any questions so far?

Yes.

Yes. Please.

Um.

Yes.

The word blindness

yes.

It doesn't happen very often, but it has only happened once in the past 10 years.

Is it okay if I can't say anything?

Yes.

I can't say anything, but please keep this in mind.

May I?

Yes.

Let's remember this just in case.

Let's continue.

Once again, without talking about plans or thoughts,

if you think and think broadly,

regardless of occupation or religion,

for each of us,

thinking, thinking and living are.

Almost inseparable.

As long as I live as a human,

thoughts and thoughts are.

It's part of living,

you could even say that it is the very activity of living as a human being.

In this way, living and thinking are.

If it is indivisible,

we almost.

Without thinking carefully,

it is impossible to live well.

Thinking well and living well means.

In a greater sense,

you will have to think positively and live your life in a way that is rewarding.

Is it better to memorize sentences like this?

Is it memorized?

You don't have to memorize it.

There's not much need to memorize it.

However, it is important to grasp the main points clearly.

Should I just write down my thoughts?

Are you trying to read what the author is thinking?

What it means to truly live,

because it doesn't come to mind at all.

Well, this sentence is a bit difficult.

My opinion is that in this case,

please think without it.

Considering the author's ideas first,

let's continue reading the article.

Do you understand?

Yes.

Does anyone have any other questions?

Isn't there? Anything is fine.

From the reporter,

yes.

Do you become able to understand by doing a lot of problem sets?

That's a really good question.

If you read a lot, you will get the trick to grasp the main points.

It will become easier to understand.

The more you read, the faster your reading speed will become.

Let's continue reading the problem collection.

My recommendation is:

Well, that's right.

My recommendation is:

This is a past question, but

I recommend solving past university questions.

Any university is fine.

We recommend the universities you like and the universities you want to apply to.

Let's keep trying to figure it out.

Do you have any other questions?

Here you are.

After all, I want to read but I can't read the kanji,

it's a little hard to read because I don't understand anything.

That alone gives me a little respect,

anky is the only way to memorize kanji.

Ah, kanji. Kanji is right.

I have a good way of remembering things,

it's easier to remember once you remember the meaning.

It's easier to remember if you memorize it along with the meaning,

it will also be difficult to forget.

I also recommend buying a dictionary.

If you look it up in a dictionary, you'll remember it naturally.

We are now in the era of smartphones and mobile phones,

I think there are a lot of people who remember

it because of the conversion function.

Make sure to look it up in a dictionary and memorize it.

Do you understand?

Yes.

It's not the pictures my grandpa memorized by looking

them up in the dictionary, but the ones he eats.

Grandpa eating a dictionary. It's unique. I think it's really good.

I'll eat what I remember.

Ah, I think it's good. That's right.

Do you have any other questions?

Anything is fine.

Teacher, there are so many dictionaries out there that

I don't know which one is best. What is the best one?

I agree. Colored ones are also available now.

That's why I recommend something in that color.

Got it.

We also recommend one with large letters that you can write on.

After all, it's difficult to use, so it's a little expensive,

but it might be better to buy something expensive and good.

Because it's something I'll be using forever.

What dictionary did you buy when you were in junior high

school that you can still use even if you write like this?

Ah, that's totally fine.

It's very convenient to have one of the small pocket types.

Does anyone have one?

There aren't many.

Teacher.

Here you are

I heard that a large percentage of four-letter

idioms appear in entrance exams and tests.

Ah, that's right.

Are there any four-letter idioms that are easy to come up with?

Ah, yes, there is.

Everyone around here knows about thought composition, meaning

expansion, perfect Harmony phrases, and isshindenshin, right?

Yes, I've heard of it.

That's right.

I've heard of it.

What else?

Perfectly harmonious phrase.

Yes.

The perfect Harmony phrase means to punish evil.

Other examples include consistency in defense, truth and

truth, success, and doing things without saying anything.

Anyone know around here?

Don't say anything but do it.

Ah, that's nice.

I wrote it like sumo.

Does anyone know any other four-character idioms?

Does anyone know?

Isshin-ketsuho.

Oh, that's amazing.

Empathy.

Empathy is not a four-letter word.

Disapproval on all sides.

Ah, that's amazing.

Are there any others?

Not at all.

Are there any others?

It won't come out.

Well, everyone, were you able to deepen your understanding

through this answer matching and explanation?

I'm planning to do a quiz next week based on a written essay in

a different format than this one, so please review it carefully.

Well then, it's time for today.

Let's end this lesson.

I will be staying late after school today, so if you have any

questions or concerns, please feel free to ask me in the staff room.

I'll be waiting.

Is it okay to casually participate in club activities?

It's totally fine. Because I'm staying late.

I'm open to questions.

I love people who are eager to learn.

This concludes the lesson for today.

Everyone, please study hard for yourself.

Yes, I would like to start the class.

[Second period: Chemistry]

Continuing from yesterday, please open your textbook to page 24.

Yes, we have a lot to learn today.

I'll keep doing it.

Yes, did you open it?

Yes, textbook.

First of all, I studied a little bit today, and yesterday too, at the end.

I would like to start by reviewing the no. 1

substance a, its components, and element symbols.

Yes, first of all, this is the table posted on the blackboard.

Please take a look here.

This is the abbreviated periodic table of elements

written at the bottom of page 24 of the textbook.

I think it's pretty easy to understand since it's color coded.

Yes, let me explain a little bit.

There are 1 genus and 2 genera, leaving 3 to 12 and 13 to 18.

Yes, it's flying around a bit here so please be careful.

Yes, as a review, let's read a little bit in order from 1 to 20.

Yes, I'll come.

Yes, hydrogen, helium, lithium, beryllium,

boron, carbon, nitrogen, oxygen, fluorine, neon,

sodium, magnesium, aluminum, silicon, phosphorus,

sulfur, chlorine, argon, potassium, and yes, calcium.

This is the basic of basics.

Please be sure to remember this.

This table is the basis for the questions that will be

asked in the national center test and the second stage test.

You have no choice but to memorize this, so do your best to memorize it.

Yes, puns are often used as mnemonics for a long time.

Yes, I'll give it a try.

Yes, I think it's one way to memorize things like this.

Yes, it's a bit difficult to read, though.

I think it will be easier to remember if you memorize it the way you feel now.

For example, element number 12.

If you ask me.

Okay, then suzuki-kun.

Yes, it's magnesium.

Well, yes.

Number 12 is here.

It's magnesium.

Yes, nakamoto-kun.

Element number 7 is.

Well, it's frugal.

Yes, that's correct.

So, what are the element numbers in a certain book?

Shimizu-kun.

Well, some books are 18.

Yes, that's correct.

There will also be problems like now where you are asked for the element number.

So please memorize both sides.

Yes.

It would also be a good idea to memorize the periodic method in its entirety.

For example, Aeon.

Yes, I'll come.

Above the ions is oxygen.

Above the phosphorus is nitrogen.

Next to nitium is berulium.

Calcium is next to potassium.

I think it's good to remember it like this.

Yes.

I have a memorization test tomorrow, so.

Let's remember it today.

Yes, let's do our best.

Is it tomorrow?

It's tomorrow.

Tomorrow is dangerous.

Can you remember?

It's okay.

If you memorize it properly, I think you'll be

able to master it perfectly, so let's do our best.

Yes.

Next, we will move on to units on simple substances and compounds.

Well, that's page 25.

That's 25 pages of the textbook.

Yes.

I'll start reading from the top.

Yes.

Like hydrogen, carbon, etc.

A substance made of only one type of element.

This means that it is made of only one type of ingredient.

Yes.

Such things are called single units.

This part is very important, so.

Let's also underline it.

Yes.

And water is formed when it combines with oxygen.

Also, like carbon dioxide and carbon monoxide,

which are produced when carbon is burned,

a substance made of two or more elements is called a compound.

Yes.

This part is just as important as the single part, so be sure to underline it.

Yes.

Now, hydrogen and oxygen are simple substances.

Carbon monoxide and carbon dioxide are compounds.

But even if you suddenly say that,

is it made of one type of element or two types of elements?

You won't know until you remember it after all.

So, how do you remember it?

This is it.

Yes. Remember the periodic table.

When I say carbon monoxide, it's co.

When you say carbon dioxide, it's co2. Yes.

It's a compound because it has two elements, oxygen and

carbon, and when you think of water, it's ho and h2o. Yes.

All you have to do is remember that there are two hydrogens and one oxygen.

Well, you just have to put in the effort and memorize

it, so I think it's easy once you memorize it. Yes.

I remember a lot.

Well, even though I said this was a lot, there are still more.

Let's do our best. Yes. I'll continue. Yes.

However, when I say simple substance, the name of the element is always attached,

for example, when you hear the word oxygen, it is made up of oxygen atoms.

When you hear the word hydrogen, it is made up of hydrogen atoms.

Therefore, if an element has the same name, it

is good to remember that it is a single element.

However, for other compounds, you have no choice but to

memorize the chemical formula made up of element symbols. Yes.

So next, I'd like to do an example of that. Yes.

First, as an example of a simple substance made of one type of component element,

when asked what kind of things there are,

please take a look here. H2. This is hydrogen.

Everyone please write it down in your notebook.

When you say hydrogen atom, you mean this h.

Let's memorize various types of units in this flow.

Oxygen is made up of one hydrogen atom and two oxygen atoms.

This is also a standalone item. It's only made of one type of element.

There are also nitrogen, chlorine, sodium, potassium, and many others.

Carbon, barbecue, carbon yes.

This is used for things like barbecue charcoal.

There are some famous ones that are also made of carbon atoms.

Do you know anything?

Please raise your hand if you know.

Yes, Yamamoto-kun.

Diamondle.

Yes, that's right. Yes, that's right.

Next, let's write down calcium and magnesium.

I have written about various types so far,

all of the elements I have just written are made up of one type of element.

Name and yes, name.

Be sure to memorize the name and chemical formula.

For example, nitrogen is made up of two nitrogen atoms.

We must remember that ozone is made up of three oxygen atoms.

Yes, here, that's right. It's no good if you don't remember it like this.

Yes. When it comes to the advanced version, it becomes difficult to understand.

Yes.

Well, let's end this example of a simple substance made of elements for now.

Next, let's take an example of a compound.

This is a compound.

Please look here.

Yes. A substance that contains two or more types of elements.

When oxygen is burned, which is also mentioned in the example in the textbook.

Please watch it.

At this time, carbon and oxygen combine.

Yes. Carbon dioxide is then produced.

Yes. This is a state in which two oxygen atoms and one carbon bond.

Yes. Carbon dioxide is one of the products released when oxygen is burned.

Yes. Unlike carbon dioxide, this gas is produced during incomplete combustion.

Both carbon monoxide and carbon dioxide contain the elements oxygen and carbon.

The rest is NH3. This will be ammonia.

N is nitrogen and H is hydrogen. There are three

hydrogen atoms attached to one nitrogen atom.

Yes. I think you can tell by looking at the table.

Yes. Next is nacl. Yes. What is the name of this substance?

Well then, wait a while.

Picture~.

Is it sodium chloride?

Yeah. It's a bit of a shame. You're just a little wrong.

Yes. So let me explain this.

This is called sodium chloride, not sodium chloride.

Yes. This is a bit confusing, so please be careful as it can be very easy to wait.

Sodium chloride. This is the salt that everyone eats on a daily basis.

Yes. Sodium chloride is written on the back of the salt container.

Yes. If you haven't seen it yet, please take

a look when you get home and eat dinner today.

Yes. Next is h2o. Yes. Here it is.

I think you often hear this in your daily life.

Everyone understands, right? I'm sure you'll understand.

Yes. Takashima-kun. Please take a moment to answer.

Water?

Yes. That's right.

Does it match?

Yes. It fits. Yes. Well done.

Yes. Two hydrogen atoms and one oxygen bond together.

That's why it's h2o. So water is the correct answer.

Yes. Well done.

The rest is naoh. Sodium hydroxide. Yes. Here it is.

And hcl. Yes. It's hydrogen chloride.

This name is often heard when hydrogen chloride is dissolved in water.

Yes. It becomes hydrochloric acid.

Yes. Next is h2so4. Yes. This is it.

Yes. Is there anyone who understands this? What should we do?

Well then, tan a be-kun. Yes. Do you understand?

H2so4. Yes. What?

Please wait a moment. It's now. Yes. Please.

I'll be waiting. Teacher, I'll be waiting.

Sulfuric acid. I think it's sulfuric acid.

It's sulfuric acid. Yes. Sulfuric acid is the correct answer.

Sulfuric acid is an acid that does not evaporate. It's a very strong acid.

In science, it means that something doesn't evaporate.

Yes, I think this is a word that I don't get used to often.

This is called non-volatile. Yes. Now, the things I just

explained above are made of two or more types of elements.

This is called a compound. Yes.

Please remember the names and chemical formulas of

the simple substances and compounds written here.

This is also important. Yes.

So, let me give you a small summary so far.

Of the 111 elements on the periodic table, please memorize up to number 20.

I can't remember.

It's up to 20, so remember it.

Yes.

Yes. Let's do our best to remember it.

Will it be given in the test?

That's right. This is the basics and the part

that is most likely to appear on the test.

So it's better to remember that.

Yes.

Also, the vertical and horizontal arrangement

of the periodic table is extremely important.

Yes. We will study this point in more detail next week.

Now let's learn about organic compounds.

What exactly are organic compounds?

Organic compounds are compounds that contain carbon.

However, as an exception, it does not include carbon dioxide

or carbon monoxide, which are present in the atmosphere.

Yes. Let's study about organic compounds that you need to memorize.

Yes.

The basis of organic compounds is hydrocarbons.

It is a compound containing carbon and hydrogen.

This is something you must always remember.

Next are hydrocarbons, which are the basis of organic compounds.

Let's remember that first.

First of all, what should I remember?

Yes, this is it. Please look at this table.

Click here for the table. It's the number of carbons.

1, 2, 3, 4 pieces. I'll omit the following.

Yes. So there is one carbon and four hydrogens.

These four hands have hydrogen attached to them.

This is called a structural formula.

Yes. Let's look at the structural formula of a hydrocarbon with one carbon number.

Yes. There is only one carbon. It's like what I posted earlier.

That means that the atomization is four-sided, so four hydrogens will follow.

The structural formula is a form that represents all the bonds.

Yes. And it's next to the structural formula.

Inauguration ceremony. Yes. This is it.

What I'm saying is that the bond between carbon and hydrogen is omitted.

Yes. Furthermore, yes. Here. It's a molecular formula.

Yes. In this case the inauguration ceremony and yes. It will be exactly the same.

Yes. 1 carbon and 4 hydrogen.

Yes. This is the simplest hydrocarbon

that's 4 carbons.

Yes. That's 4 carbons.

There are also 3 more.

I have prepared a molecular formula for this.

Yes. This is the molecular form, yes. Yes, I have prepared it.

Yes. Look here.

Yes. The red one is one carbon and the blue one is four hydrogens.

And the way to connect this, everyone, is it easier to understand if you stop this?

Yes. This is inside, yes.

There may be 5 carbons in the molecule.

Yes.

Yes. In the structural formula, you have to hold your hands between carbon and carbon.

Yes.

Yes. And carbon has three hands left, so yes.

Hydrogen will follow there.

Yes.

The posture type will be lined up with ch3 and ch3.

Yes.

As you can see the properties like this, the attitude formula is yes. I'll write it.

Yes.

The molecular formula is 2 carbons and 6 hydrogens, so yes.

Write ch2 and ch6.

Yes. This is called ethane.

Yes. Is everyone okay so far?

Do you understand?

Yes.

Therefore, we have prepared a molecular model for this ethane as well.

Yes. I'll take a look at that.

Yes. This is it.

Yes. 2 carbons and 1,2,3,4,5,6 hydrogens.

Yes. And there are 1, 2, 3, 4, 5, 6, 7 hands that connect them.

Yes. Ethane is formed in this way.

Yes.

Yes. Is it okay to use netane in ch4 and ethane in ch6?

Yes. Did it get into your head?

It's easy to understand.

Ah, good for you, teacher. I put a lot of effort

into making this, so it was quite difficult.

It was good. It was helpful.

Yes. I'm still going. Use a model.

Yes.

Yes. Then I'll go next.

Yes. Next time, yay!

Yes. There are more carbon and hydrogen than before.

Yes. So what is this molecular model?

Let's count the number of carbons and hydrogens.

Yes. Well then, let's go.

First, there are 1, 2, and 3 carbons and 1, 2, 3, 4, 5, 6, 7, and 8 hydrogens.

Yes. 3 carbons and 8 hydrogens. This is the structural formula.

Yes. Please look over there.

Yes. This is the structural formula for three carbon atoms.

And this is the specified formula. It becomes ch3ch2ch3.

It's getting a little long.

Yes. Yes. Furthermore, the molecular formula is ch2h6.

Yes. This is the denominator expression.

I read the student magazine two years ago, and I've heard of the denominator formula.

During this period, it became more fun to look ahead

and look at the student magazine before looking at it.

My teacher is doing something like that, but I

don't really understand what he's talking about.

Well, that doesn't matter.

Yes. Well, this is the last one in this table.

Yes.

Yeah.

Here. The molecular formula is ch4h10.

Yes. So far, we have worked out the case where there are four functions.

Yes.

Do you think you can understand the sentence?

Yes.

Do you think you can understand the sentence?

Yes.

So, do you think you can understand the sentence?

Yes.

Yes.

Well then, yes.

I'll try taking it down again.

Yes.

There's more than before.

Now, does anyone know this? What do you think?

Yes.

Yes. And this one, yes, there's a yellow one.

Yes.

There are three of them. Yes.

So, does anyone know this? What do you think? Let's get used to it. Yes.

Do you think you can understand the sentence?

Yes.

Yes.

What do you think? Yes.

Ah, that's amazing. I understand. That's correct, ishii-kun.

Well, that's amazing. Oh, did you study? Beforehand, even in your preparations.

Yes, that's right. That's right. This is a molecular model of glycerin. Yes.

Is yellow an o?

Yes, what is it?

Yellow is o.

Yes, that's right. Yes. That's right.

Ah, that's a bit like that. Everyone is starting to understand.

No, it feels good, doesn't it? Yes.

Well, I think everyone has probably heard of glycerin. Yes.

It is a component of liver fluid that is

used in eye drops and for constipation. Yes.

Glycerin is a substance used in medicines like this.

Yes. Yes. So, well, that's what it is.

Well, I got a little off track at the end.

Well, this model is amazing, sir, and I think it's a bit of a success.

That's right.

Oh, is it true? Ah, good. I'm glad it got a good reputation.

It was worth the effort.

Yes. The above is the structure of hydrogen chloride's

structural formula, posture formula, and molecular formula.

Yes. This is also important. Please review it carefully at home.

Yes. Yes. It's like this. Yes. Yes.

Yes. Well then, let's go next time.

Well, next we will study about the separation and production of substances.

Yes. This is an important part, so please listen carefully.

Yes. Now, let's read the textbook.

Yes. Please look carefully.

Yes. Textbook 32 pages. Yes.

Regarding the separation of substances contained in a mixture.

There are several methods for separating each substance.

Yes. Substance generation is the process of removing

impurities from a mixture and obtaining only pure substances.

Yes. Now, let's look at the types of separation and production of substances.

Yes. First of all, you're an idiot. Yes.

First, there is paper called filter paper.

Everyone must have probably used it in science

class when they were in elementary school. Yes.

This is him, and he has small holes above his eyes.

Something like water opens this hole like this. Yes.

Then, the steps to insert the plate are as follows:

Fold the filter paper and make it into a trumpet shape.

Next time, I'll explain it on the material side. Yes.

Set it in the funnel.

The operation of separating liquid and solution

using filter paper is called roka. Yes.

Hey everyone, I've gone this far, but do you understand?

Are you okay? Are you following me?

Yes.

It was good. Please write it down in your notebook so that you can understand it.

Now let's talk about the upstream. Yes.

Filter paper refers to the operation of heating a mixture of liquids that cannot

be separated and cooling the generated vapor to obtain the desired liquid. Yes.

For example, upstream water is obtained by heating

salt water and cooling the evaporated water vapor. Yes.

When water becomes steam, it becomes water

again when it cools. So all you get is water.

This is the upstream principle. Yes.

Are you okay so far? Yes, okay?

Yes. That's a good reply.

Okay, let's go to the next page. Yes.

This article is about recrystallization. Yes.

Recrystallization refers to the process of dissolving a crystalline

substance containing impurities in a suitable solvent and

then using the difference in solubility of the substance due to

temperature to crystallize and extract only the desired substance.

Yes. It's very difficult and written a little hard to understand.

Let me explain this in an easy-to-understand

way and explain what it means.

First, dissolve everything in hot water. Yes.

Even if it's all melted down, it's still the real thing.

Then let it cool.

What happens when it cools down is that white crystals appear.

Yes. Here, the liquid and solid are filtered.

When you strain the liquid through a strainer, the solid remains.

You will be able to take only the crystals.

This method of extracting only the desired substance is called recrystallization.

I will explain this in detail tomorrow.

Yes.

Today, first of all, please follow the textbook with your eyes.

Yes. So let's continue.

Regarding separation by digestion.

Digestion is when a solid is heated, it becomes a solid directly,

this refers to the phenomenon in which when a

liquid is cooled, it directly becomes a solid.

Digestion is the process of changing something from solid to liquid to solid.

Yes.

Naphthalene is famous for its digestive properties.

Dry ice is famous.

The method of separating substances that have a

digestive effect is called separation by digestion.

Yes.

Are you okay, so far?

I'm still going.

Now read about extractions at the bottom of the same page.

Well, first of all, extraction is an operation that separates only

the desired substance from a mixture using a liquid that enhances it.

A laboratory device called a secretion funnel

is used to export substances in solution.

Yes.

For example, in the case of water and oil, let's say there

is something that dissolves easily in water but not in oil.

I want to shake out only the things that are easily soluble in water.

But it's mixed in with oil.

In such a case, what should you do?

First, add plenty of water to the oil.

Then, shake it up and let it sit for a while, and the water and oil will separate.

Yes.

The oil will rise to the top and the water will sink to the bottom.

This is because water is heavier.

Yes.

Then, dissolve the substances that are easily

soluble in water and oil and take them out.

This is called extraction.

Well, this is a bit of a side note.

For example, scientifically speaking, the coffee we drink is extracted

from only the components that dissolve in water from coffee beans.

Yes.

So, to be more specific, if you pour oil on coffee powder, the

components of coffee that dissolve in the oil will come out.

When you add alcohol, ingredients that are easily soluble in

alcohol come out, resulting in a completely different taste.

Yes.

Yes. The coffee we always drink is based on the principle of pouring water

over coffee beans and extracting the coffee from the coffee beans with water.

Yes. Is everything okay so far?

Teacher, I'd like to ask you one more time, because

this part was a little difficult to extract.

Yes.

Yes.

Bean paste.

Yes. Got it.

Is that enough? It was a little difficult.

Bean paste. Yes. Well then, wait a minute, this is an important part.

Yes. I'll read it.

Yes. Extraction is the process of separating a target

substance from a mixture using a liquid that dissolves it well.

A laboratory device called a separating funnel

is used to extract substances from a solution.

For example, in the case of water and oil, let's say that

some substances are easily soluble in water but not in oil.

I want to extract only the things that are easily soluble in water.

However, if the oil is too mixed in the oil, what to do

in such a case is to first add plenty of water to the oil.

Then, shake it up and let it sit for a while, and the water and oil will separate.

Yes. Are you okay? That's all.

Yes. Let's move on.

The oil will rise to the top and the water will sink to the bottom.

The reason for this is that water sinks because it is heavier.

Yes.

Then, float the items that are easily soluble in

water and oil on top of each other and take them out.

Yes. This is called extraction.

I made a prediction earlier, but.

For example, scientifically speaking, the coffee we drink is extracted

from only the components that dissolve in water from coffee beans.

Yes.

So, let's continue with that.

Yes.

When alcohol is added, components that are easily soluble in alcohol come out.

So, it comes out with a completely different taste.

The coffee we always drink is based on the principle of pouring water

onto coffee beans and then using the water from the coffee beans.

The person from earlier didn't understand, so I guess it's okay. Do you understand?

Yes.

My dad only uses coffee beans, is this the same?

It's the same thing, isn't it? As I explained earlier,

when you dip it in alcohol, the taste changes again.

So, are there various types of extraction?

I agree. There are many things.

Dad, that's what you're doing.

Yes.

I wear a lot of different things.

Is that so? I guess your father likes that kind of thing.

There are a lot of rings in there.

That's right. Have you ever tasted or drank something like that with your father?

I don't drink much.

Ah, that's right. Sorry. Teacher, I got angry.

Thank you. Thank you for telling me that story.

Amazing.

This is quite an important place.

Here. What is this place?

Please write down anything you don't

understand in your notebook and leave it there.

Please study it properly later.

It's quite difficult today, sir.

I agree. It's a little deep, isn't it?

But that's it. There's a lot to memorize and remember.

Isn't it easy to memorize? What do you think?

I think it would be easier for teachers to remember things that way.

I'll do my best to memorize.

I wish you the best.

That's right.

If you don't study properly after you get home today, you'll be in trouble tomorrow.

Yes. Please review and study carefully.

Finally, we will be holding an experimental class for two weeks starting next week.

Is it a?

It's more fun to experiment.

That's right. The teacher also thought that

everyone would have more fun doing experiments.

Today, I would like to finish the class by doing some simple experiments first.

Now, what is the liquid in this beaker?

This is called btb solution.

Ok?

This btb solution.

This is a green liquid like this.

First, let's take this btb solution.

It becomes acid.

This is now a bit of btb solution.

Here.

I would like to put it in the acid production category.

I'm coming.

Let's drop this in.

Yes. Do you understand?

Yes. Here.

It changed from green to yellow.

Yes.

I think the teacher's white color is that.

Is it easy to understand?

It's yellow.

That's amazing.

The color will change like this.

Yes.

Well then, let's move on to the next one.

Yes.

Yes. Next here.

Yes.

It's going to be sodium bicarbonate.

It doesn't have any color.

Yes.

I'll try adding a little bit of this as well.

I'll try adding btb solution.

Yes.

Yes. I'm coming.

Yes.

Yes.

Do you understand.

Yes. It turned so blue. This time.

The color is completely different from before.

Yes. I think you can see it if you look at the teacher's box again.

Yes. It changed from green to blue.

Yes.

Yes.

Btb solution is.

Yes. Here it is.

If it is acidic with a certain value, it will turn yellow like this.

Yes.

Even stronger acidity.

Yes. More in red. When it's strong, it turns red.

Yes. And if it is alkaline to a certain value, it will turn blue like this.

Yes. Furthermore, if it is strongly alkaline, it will turn purple.

Yes. So, if it is neutral, neither acidic nor alkaline.

Yes. This one is green like this and doesn't have this color. No change.

Yes. There are other types of such indicators.

Yes. Through experiments using them.

Yes. As I said earlier, I would like to start teaching in the laboratory next week.

Yes. Also, what I studied is shown on pages 40 to 45 of the problem book.

Yes. I'll make this my homework.

It's not a again. Your teacher will decide what

your homework will be, so please study carefully.

It really has to end.

Huh? There are only 5 pages left. It goes by so quickly. Because everyone can do it.

Yes. Yes. Yes. That's great.

Yes. Well, that's all for today's lesson.

Thank you very much.

Thank you very much.

Yes. Well then, everyone should review it properly today and do it properly at home.

Please do so. Before I forget.

Yes.