There was no shortcut from the apprentice, and Bi Lingkong had no choice but to honestly prepare for a large-scale experiment.

She carefully recalled the things that Zhao Shengwenchao failed to decompose when he was engaged in experiments and made a list.

At the top of the list is water.

Zhao Sheng and Wen Chao once said that water is composed of two elements: "hydrogen" and "oxygen".

But they couldn't split the water into these two elements.

At that time, Wen Chao swore that "electricity and fire are essentially motion, and there is no reason to be able to electrolyze, and they will not decompose at high temperatures." ”

Then he started boiling water.

As a result, there is nothing other than tossing out a "sauna".

Wen Chao was puzzled by this, but after all, they were very busy and didn't have time to toss more, so forget it.

Since electricity and fire are different, then using thunder and lightning to blast water should be able to get those two elements, right?

She arrives on the island and casts a spell to summon a bolt of lightning that struck the surface of the water with a bang.

The surface of the water suddenly boiled, and the boiling water vapor turned into a thick white mist, and then dissipated in the sea breeze.

But in this process, Bi Lingkong clearly observed that gases other than water vapor appeared in the water mist.

She turned her head to look at Pan Long.

Pan Long blinked, dazed.

Although he was certain that the electric shock would electrolyze the water, producing hydrogen and oxygen - but it could have produced a mixture.

But...... He didn't have the skills to find hydrogen and oxygen in this thick mist.

"There were other gases that did appear. Lan Ling said, "Could it be that the new element?"

"Not really. Lie Yukou shook his head, "That thing...... It doesn't feel pure, it's like a mixture of several different gases. ”

He also summoned a bolt of lightning and hit the sea, then squinted his eyes and said, "I'm sure there's oxygen in there, something else, I'm not sure." ”

At that time, Zhao Shengwenchao's method of obtaining oxygen was naturally not to heat potassium permanganate, but to use the photosynthesis of aquatic plants.

This method is so simple that even children can follow suit as long as there is a transparent container.

And the way they get nitrogen is, naturally, to deplete oxygen through combustion.

By this rudimentary means, they split the air into oxygen and nitrogen, which were included in the imperial court's Tiangong textbooks. If someone wants to take the engineering exam, Zhao Shengwenchao's series of experiments back then must be learned.

Although the oxygen and nitrogen obtained by the two were not pure, it was at least enough for the people of insight in Kyushu to gain access to highly concentrated oxygen and nitrogen.

Lanling was not interested in this, but Lie Yukou had studied these specifically.

So he was immediately sure that lightning strikes the surface of the sea did produce oxygen, and at the same time produced some gas that he had never seen before.

"Ah Long, what are those other gases?" asked Bi Lingkong.

Pan Long smiled, "You can cast a spell to put them together and study them." Wouldn't it be nice if you could be sure that it was some kind of element and you would give it a name yourself?"

Bi Lingkong pouted, and lightning struck the water again.

This was repeated several times, and finally she shook her head and said, "No!

"You can burn it and try it. Lie Yukou said, "Back then, Zhao Shengwenchao used fire to remove the oxygen in the air. ”

Pan Long raised his eyebrows and didn't say anything.

What is obtained by lightning striking the surface of the water is a mixture of hydrogen and oxygen, and it is set on fire......

Forget it, there's no way they'll be injured by this thing anyway, so it's better to watch the fun.

A few minutes later, there was a loud bang, and the violent shock wave set off waves several meters high, accompanied by strong winds, and dispersed in all directions.

"Why?!Why did it explode?" asked Bi Lingkong blankly.

She reacted quickly enough to protect herself with her true qi in time, but she was not blown up, but she was just startled.

Lie's reaction was slower than hers, and his hair was blown up. The Lanling beside him was covered in water, like a chicken in soup.

Both of them are cultural people, and they can naturally fight, but their alertness is far worse than Bi Lingkong's, and they immediately fell for it.

Pan Long stood in the distance, shook his head, and sighed.

He didn't get a drop of water.

"Pan Long, you know it's going to blow up, right?" Lan Ling looked at Pan Long, "Otherwise, you can't be prepared in advance!"

Pan Long smiled and said, "Explosion is also an effect, it's better to have an effect than no effect, isn't it?"

"But as soon as it explodes, those gases are gone!" Bi Ling said with a puff of air.

"With your skills, teacher, is it troublesome to do it again?" Pan Long persuaded, "If you are prepared this time, you will naturally be able to solve the problem." ”

Bi Lingkong nodded, and soon collected another batch of mixed gases.

This time, it ignited again and exploded, but the power of the explosion was firmly restrained by her, and it couldn't leak out at all.

There was a flash of fire in the air, and then countless droplets of water appeared out of thin air.

"Huh, where did this water come from?" Bi Lingkong asked suspiciously, "Didn't I remove the water vapor from the gas mixture just now?"

"One more time. Lie Yukou's eyes lit up thoughtfully.

With their skills, "doing it again" is very simple.

In just half an hour, they repeated the experiment several times.

The end result is a lot of pure fresh water.

"I probably understand!" Bi Lingkong nodded again and again, "We all know that seawater has a lot more salt than freshwater. Lightning strikes are ineffective against these salts, but they split the freshwater into two elements, one of which is oxygen and the other is gas. ”

"They burn when they are mixed and they explode. And as a result of combustion, it turns back into water – pure fresh water. ”

She smiled proudly: "In other words, water is made up of these two elements, there is no doubt about it!"

Pan Long applauded lightly.

It only took less than an hour to come to such a conclusion on his own, and the teacher's scientific research path has been formalized.

"What I need now is to find a way to get rid of oxygen without causing combustion and explosion. Bi Lingkong's eyes sparkled, "This method...... Aaron, you must know, don't you?"

Pan Long smiled and nodded: "That's right, but are you sure you want me to help? If you ask me for help at the last step, it's going to be a little imperfect, isn't it?"

Bi Lingkong raised his eyebrows proudly: "You're right! This little thing can't bother me!"

She returned to the World Outer Building and flipped through the Mo family's books.

It took less than a day, and that night, she found a solution to her problem.

She grinds the iron into a powder, then puts it into a gas mixture obtained from lightning water, and then heats the iron powder.

After a while, the faint silver iron powder turned into pitch-black iron oxide powder, and most of the oxygen in the mixed gas was consumed.

This time, I lit the fire again, and I saw light blue flames floating in the air, accompanied by a small explosion, which was endless.

"It's light enough. Because he had been using True Qi to bind these mixed gases, Bi Lingkong was particularly sensitive to its weight changes, and he couldn't help but sigh at this moment, "At the same size, oxygen is slightly heavier than air, and this gas ...... Probably less than one-tenth the weight of air. ”

She thought for a moment, nodded vigorously, and made a decision.

"I've decided! The name of this gas is hydrogen!"

Looking at the teacher's shining eyes, Pan Long couldn't help but sigh secretly in his heart.

In another world, scientists have spent a lot of effort to produce hydrogen and determine the density.

But for the teacher, it's less than a day's work.

It's so efficient for someone with a lot of power like her to do scientific research!