Turning water into ice?

Li Zhen was also stunned, and was amazed in his heart, could it be that he found ammonium nitrate? But when I looked at the table, there was obviously no such thing as ammonium nitrate on the table, not even calcium nitrate.

There was just a bunch of white crystals.

Li Zhen hadn't verified it, and he didn't know what the white crystal was. There was some consternation in his heart, could it be that Qi Dengming really discovered a mysterious phenomenon? Is it something you don't know?

"Senior Qi, please demonstrate it."

Li Zhen couldn't wait.

Qi Dengming saw Li Zhen's posture of asking for advice, his heart fluttered, and he laughed: "Senior Brother Li don't worry, let's say it first, if you lose, you have to worship me as a teacher." Do you say yes or not? ”

"I promise."

"Well, so many people witness ......"

"Are you finished?"

"Hurry up and get started, okay?"

"If you're in a hurry, can't you hurry?"

“……”

The surrounding students couldn't help but Qi Dengming began to pretend to be forced, and interrupted one after another.

Qi Dengming smiled a little embarrassedly and said, "Okay, Senior Brother Li, you are optimistic." But it doesn't matter if I don't know, and that's what I discovered by trial and error. There is no end to learning from the sea, you still have a long way to go, don't be discouraged. ”

Li Zhen nodded: "Yes, the motto of Fuxing University is to be modest, cautious, and seek truth from facts. Senior Qi is right. Can we get started? ”

Qi Dengming's face was straight: "Look at it, this is a glass of water." ”

Qi Dengming pointed to a glass of clear water on the table.

'Hulala' everyone gathered around, and the people outside frantically crowded inside, padding their feet to look inside.

Li Zhen also stared at the glass of water with wide eyes, not knowing what Qi Dengming was next.

But seeing Qi Dengming's unfathomable smile, he stretched out a finger: "Look at it, everyone is optimistic." It's a finger, I have magic, and I can freeze this glass of water with just this finger, believe it or not? ”

"Pull it on."

"Are you dreaming? Still magical? ”

"If you can freeze this glass of water with your fingers, I'll eat it."

“……”

But Li Zhen was stunned, did he just need one finger? There was a smile in his eyes, and he probably guessed what this was happening. Well, I thought someone would surprise me......

Qi Dengming blushed and roared thickly: "You don't believe it, do you? Look at it. Don't blink, look at it, look at it. ”

Even Qi Stunned and Xu Shenxue were aroused by their curiosity, and they huddled together with the students, piercing their necks and looking at each other.

saw that Qi Dengming's index finger gradually reached for the beaker, and then gently touched the surface of the water.

A strange phenomenon has appeared.

As his fingers left, the entire surface of the water immediately began to solidify, forming crystals. Then the crystals spread rapidly downward.

In just a few seconds, in the stunned eyes of everyone on the scene, the glass of clear water completely solidified and frozen.

"Ahh

"Hell yes!"

"He really knows magic!"

"It's impossible, it's simply not scientific. He didn't have anything on his fingers. I saw him grab the steamed bun with that finger and eat it, and he didn't have anything on his finger. ”

"He's really going to turn water into ice."

", Senior Qi, you are so handsome, how did you do this. That's impossible! ”

"Hell yes, what kind of phenomenon is this? It's just autumn now, and the weather hasn't turned cold yet, so how can the water freeze in the summer? ”

“……”

With a 'buzz', the entire school building exploded.

The sensation of the chemistry building caused a sensation in the whole school, and students from other departments of the school ran madly to the chemistry building, desperately squeezing inside.

"I heard that Senior Qi really turned water into ice!"

"He did it with one finger."

"It's impossible, I don't believe it, it's still an autumn tiger in the weather. How could he ......"

"He can do magic."

"Quick, classmate, get out of the way, let me go in and have a look!"

"Don't squeeze, don't squeeze."

“……”

Xu Shenxue gasped: "Classmate Qi, what's going on!" ”

Qi Dengming smiled and said nothing, looking at Li Zhen incomprehensibly: "Worship me as a teacher." ”

Li Zhen smiled bitterly: "Can I touch this ice?" ”

"Yes."

Li Zhen stretched out his hand and touched it, and with a helpless wry smile, he said quietly: "Senior Qi, I admire you for discovering this amazing phenomenon." But...... Maybe it's better to work out a third way of icing next time. By the way, it's better to research the real point of water into ice next time. I'm talking about real ice, not this fake ice. ”

"Fake ice?"

Qi Dengming said angrily: "Everyone has witnessed the process of water freezing, why do you say that this is fake ice." ”

Xu Shenxue's eyes lit up, and he kept muttering: "The third kind? The third? Does it mean that Li Zhen knows two ways to freeze? ”

Li Zhen sighed: "In chemistry, this is a phenomenon of hot ice. The so-called hot ice is the phenomenon of water solidification at a temperature higher than 0 degrees Celsius, at the same level as the room temperature, or above the room temperature, which is called hot ice. In fact, the freezing point of water is below 0 degrees Celsius, and it freezes with different atmospheric pressures. So this hot ice, strictly speaking, is fake ice. ”

"Hot Ice!"

Someone exclaimed, reached out to touch the ice in the beaker, but felt a hot sensation on the tips of his fingers.

Hellish screaming, "Hey, this ice is really hot." ”

"Ah, it really is."

"It's hot ice."

"It must be forty or fifty degrees, right? How can water at forty or fifty degrees freeze? It's amazing. ”

"It's really hot."

“……”

Qi Dengming's face was a little red: "Yes, it's hot ice." But it's still ice. ”

"It's not ice."

"Don't talk about it, everyone sees that the water is solidified, why do you talk nonsense with your eyes open? What is a water-solidified object, not ice? ”

Li Zhen said: "You are not water." ”

"You fart! How is this not water! ”

Qi Dengming was a little crazy.

The classmates also shouted: "Senior Brother Li, we have all seen it, it is transparent and clear, it is indeed water?" ”

Li Zhen shook his head: "You can only say that this is called 'liquid', but you can't say that it is H2O water." ”

Qi Dengming stiffened his neck: "Then what do you say this is?" ”

"Sodium acetate supersaturated solution."

As soon as these words came out, Qi Dengming choked on saliva with a 'poof', and looked at Li Zhen in shock: "You...... You, how would you know? This is a new phenomenon that I discovered by accident while doing experiments, how did you know about it? ”

Li Zhen smiled and said, "Those white crystals on the table are sodium acetate crystals." I wasn't sure what it was at first, but when I saw the hot ice, I knew it must be sodium acetate crystals. ”

"Yes!"

Qi Dengming nodded. Those white powder crystals on the table are indeed sodium acetate crystals. He smiled bitterly in his heart, when everyone didn't understand the original plan, he would take it out and explain it to everyone and demonstrate it to everyone. Unexpectedly, Li Zhen saw through it at a glance.

"In fact, in addition to this sodium acetate supersaturated solution, your fingernails should also be stained with a little sodium acetate trihydrate crystals."

Qi Dengming looked at Li Zhen in horror: "How do you know!" ”

You must know that in order to cover up that there is nothing on his finger, Qi Dengming just turned water into ice out of thin air to increase the sense of mystery. I deliberately used this hand to eat steamed buns before. But I didn't expect that Li Zhenlian also knew!