Magical chemical phenomena, what are chemical phenomena

Yes, our teacher made it for us a few days ago, but it's quite mentally retarded, hehe.

In 10ml of NaOH solution, add just a drop of phenolphthalein solution, shake the beaker, the color of the liquid in the beaker instantly changes from colorless to red, one drop! Instant discoloration!

Then drop hydrochloric acid into the solution just now, shake it, and instantly become colorless.

Stack a paper boat, stick a small piece of sodium on the stern, and then put it in the water, the boat moves forward quickly, and the tail will glow red, so you don't have to worry that the bottom of the boat will be wet and will not burn.

For junior high school students, please consult the high school chemistry textbook.

For high school students, please consult the chemistry textbook for college students.

For university students, please consult the Graduate Chemistry Textbook.

And so on. Postdoc, please flip through the unsolved mysteries of the world.

.It's all magical.

What grade do you mean?

Miraculous reactions are often brain-dead.

For example, the one that sprayed a bottle of Coke out.

Although very "magical".

But it's hard to say whether it's chemistry or not...

I don't think any serious reaction seems to be a good deal.

When you try to burn the benzene, splash water to extinguish the fire.

That's even more amazing. Ha ha.

1. The explanation of chemical phenomena is as follows:

It refers to the phenomenon that occurs in the process of cracking molecules into atoms, and the atoms are re-arranged and combined to form new molecules, and the chemical phenomena produced by this process are often accompanied by the emergence of luminescence, exothermy, discoloration, precipitation and the release of gases.

2. The opposite of chemical phenomena is physical change, and the method of distinguishing them is introduced as follows:

When these ruler phenomena occur in material changes, it is not necessarily a chemical change, such as luminescence and heat release phenomena, when the electric lamp is energized, it is a physical change in the chain, so the essential difference between chemical change and physical change is that there is a new substance after the chemical change, and there is no new substance after the physical change.

1. The explanation of the phenomenon of the problem is as follows:

It refers to the phenomenon that occurs in the process of cracking molecules into atoms, rearranging and combining atoms to form new molecules, and at the same time, the chemical phenomena produced by this process are often accompanied by the appearance of luminescence, exothermy, discoloration, precipitation and the release of gases.

2. The opposite of chemical phenomena is physical change, and the method of distinguishing them is introduced as follows:

When the occurrence of these phenomena in the material change, it is not necessarily a chemical change, such as luminescence and exothermic phenomenon, when the electric lamp is energized, it is a physical change, so the essential difference between chemical change and physical change is that there is a new substance after the chemical change, and there is no new substance after the physical change.

Have you ever seen such a miraculous chemical reaction? Check it out!

Go to the field and boil eggs without a fire.

Principle: Quicklime and water react to exothermic.

1.Soda (sodium carbonate) + chlorine (chlorine water in this case) 2Cesium + water.

The cesium single physique really looks like a sci-fi movie, hey! ）

3.Iron + copper sulphate.

5.Add some liquid soap to the milk (dotted on the food coloring).

6.Mercury thiocyanide + fire.

Known as the "Pharaoh's Serpent", it sounds good niubility is actually decomposed by heat! ）

Don't try! Highly toxic!

7.Lithium + fire (lithium's temper is really incompatible).

9.Ammonium dichromate + fire (another pharaoh's serpent).

10.Dead squid + sodium (salt, look at the bottle to know).

Big brother, I don't read much, you lie to me, is this chemistry, do you think it's a biological pinch?

Squid: Don't (> o Don't! I'm dead, can't I be a dead squid quietly?

12.Calcium + fire.

Does calcium tablets have this reaction when heated? What about the lid in the cover? ）