there was a very hot live broadcast downstairs this afternoon. The theme is this little experiment that has been going on on the Internet for at least a decade-the Mentos Coke Fountain. Various attempts have been made in the process of preparation, and today I mainly take this opportunity to share some operational feelings. This experiment is quite interesting, although it is a little wasteful, you can try various conditions if you are interested. The principle of

will not be discussed here, just take a look here: how to make the most powerful Mentos soda fountain?

the following are some practical thoughts:

① had better have a device for throwing sugar

after opening the soda, you can choose to throw the sugar manually or squeeze it in directly with Mentos's original package, but the effect is not very good. Because there is no guarantee that all the candy will enter the bottle quickly. The problem is that the eruption of the sugar in front of the drink has already begun, and the sugar in the back may be popped out by the foam. If there is a tube as a guide, the speed of adding sugar is faster and will be smoother.

as a matter of fact, some people abroad have specially invented the special tool of Camentos in Coke in the past. ↓

it can be seen that the existence of the boot device is very necessary.

(including a small tube and a valve that can be fixed to the mouth of the beverage bottle)

one of the easiest ways I've tried is to roll a tube with baking oil paper that is slightly larger than Mentos in diameter, and then block it with a card at the bottom. Open the drink, put the device at the mouth of the bottle and add sugar, then remove the card.

the control method we use when we broadcast live is a magnet. Put a few magnets inside and outside of the tube to absorb and block the candy. Then pull the outside magnet, and the inside sugar and magnet will fall into the bottle.

② beverage is still best packaged

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will definitely run out of breath (nonsense). I think the original packaging of soda in 2L is the best for the general demonstration. But there is a very regrettable thing, it is very difficult to buy the best standard for this experiment in China-- 2L Diet Coke, which is a pity. However, the effect of 2L ordinary cola is actually good, adding a bar of 14 Mentos is very high.

how ③ doesn't make a mess at home

it's not difficult to avoid scrubbing the floor. Take 2L ordinary Coke as an example, when I try it at home, I actually put it in a big basin so that the floor doesn't get dirty. In fact, 2L ordinary cola can not be sprayed on the ceiling. If you are worried, you can put it in a place like the bathroom where it is easy to clean.

theoretically, the more drinks, the more carbon dioxide can be provided, but if the goal is to see the height of the spray, then the size of the bottle mouth is also important. Pouring a vat or even a swimming pool of cola is not helpful to the eruption height, because the opening of the container is too big, which is wasteful on the one hand, and I don't think the visual effect is really good on the other hand.

for example, you can find a video on the oil pipe: people fill a small swimming pool with coke and then let a person jump in wearing a dress full of Mentos.

does that sound like a gimmick? But from the video, the real visual effect is not very obvious. The scene was very awkward. It is also suggested that everyone should not do such a wasteful thing _ (: ∠) _

the effect is better when the temperature is high

the beverage works better when the temperature is higher, so if you want a big eruption, don't use a chilled drink.

⑥ another candy that works well

Mentos is quite good at promoting Coke to produce foam, and sand and salt are not easy to achieve the same good effect (the previous experimental results are generally the same). However, the effect of another kind of candy is also good: it is that kind of circle-shaped mint, which is Baolu candy at home and life savers is generally used abroad.

in fact, according to Wikipedia, the experiment was started with a circle of mints, but the life savers manufacturer enlarged the size of the sugar, so it was not convenient to put it into the mouth of the bottle, so after that, Mentos succeeded.

to promote bubble formation, you need a lot of rough protuberances on the candy surface, as is the case with Mentos. Candy such as chocolate balls and fudge has a smooth surface, so it has no effect. In addition to the two kinds of mints mentioned above, sugar-coated jelly beans such as Rainbow Sugar and MacroampterM are also good. (in terms of my shallow knowledge of pharmaceutics, Mentos can also be seen as sugar-coated.)

here is a comparison in soda water. The bubbles on the chocolate ball on the left are no different from the background, while the chocolate beans on the right quickly produce a lot of small bubbles.

as for the different tastes of Mentos, I think there should be little difference. The previous experimental results are the same. Basically, we can think that any kind of Mentos is fine.

the eruption effect of ⑦ soda is very poor

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this is to be expected, and previous experiments have shown that soda, which contains basically only water and carbon dioxide, sprays the lowest when doing this experiment (see the link at the beginning). If it's not for comparison, you don't have to make it with soda.

that's all I want to say. I hope all interested friends can have a good time.

PS: ↓↓, you should be able to see the playback of the live broadcast here, but the scene is rather chaotic _ (: chaos "∠) _

http://www.yizhibo.com/l/kMxClFjnYtVJWzHh.html

the effect is better when the temperature is high

the beverage works better when the temperature is higher, so if you want a big eruption, don't use a chilled drink.

⑥ another candy that works well

Mentos is quite good at promoting Coke to produce foam, and sand and salt are not easy to achieve the same good effect (the previous experimental results are generally the same). However, the effect of another kind of candy is also good: it is that kind of circle-shaped mint, which is Baolu candy at home and life savers is generally used abroad.

in fact, according to Wikipedia, the experiment was started with a circle of mints, but the life savers manufacturer enlarged the size of the sugar, so it was not convenient to put it into the mouth of the bottle, so after that, Mentos succeeded.

to promote bubble formation, you need a lot of rough protuberances on the candy surface, as is the case with Mentos. Candy such as chocolate balls and fudge has a smooth surface, so it has no effect. In addition to the two kinds of mints mentioned above, sugar-coated jelly beans such as Rainbow Sugar and MacroampterM are also good. (in terms of my shallow knowledge of pharmaceutics, Mentos can also be seen as sugar-coated.)

here is a comparison in soda water. The bubbles on the chocolate ball on the left are no different from the background, while the chocolate beans on the right quickly produce a lot of small bubbles.

as for the different tastes of Mentos, I think there should be little difference. The previous experimental results are the same. Basically, we can think that any kind of Mentos is fine.

the eruption effect of ⑦ soda is very poor

strong>

this is to be expected, and previous experiments have shown that soda, which contains basically only water and carbon dioxide, sprays the lowest when doing this experiment (see the link at the beginning). If it's not for comparison, you don't have to make it with soda.

that's all I want to say. I hope all interested friends can have a good time.

PS: ↓↓, you should be able to see the playback of the live broadcast here, but the scene is rather chaotic _ (: chaos "∠) _

http://www.yizhibo.com/l/kMxClFjnYtVJWzHh.html