Doing experiments is my favorite form of entertainment. I often go to the bookstore to read some books about doing experiments, and then go home to do experiments from memory.

On this day, I came to the bookstore again and suddenly found a strange experiment: match dancing. Can you believe that naked matches can dance in the water? I can't believe it. I came home with a curious heart, ready to solve my doubts by doing experiments.

Back home, as usual, I started the experiment from memory.

I brought a basin of water, a match and a bottle of "all-purpose glue". I applied a thick layer of "all-purpose glue" to the match head, and then carefully put the match into the clear water. After waiting for a while, I saw nothing. I calmed down and waited patiently. A few minutes passed. "Miracle" really appeared! I saw matches standing upright in the water and dancing with the swing. However, in less than half a minute, the match floated on the water again. A few minutes later, the match began to dance again. This cycle lasted seven or eight times, and the match never moved again.

What magical power drives matches to "dance"? My mind is full of doubts and I can't figure it out. Finally, my silent teacher, the computer, helped me. It turns out that when the "all-purpose glue" comes into contact with the phosphorus on the match head, it will produce a substance. The more this substance accumulates, the more it will make the match stand upright. When this substance volatilizes, matches are driven to dance. After a while, the outermost substance produced by the matchhead was swung out, and the match did not move. During this time, the generated substances gather again, and the matches "dance" again until the reaction between the all-purpose glue and phosphorus is over.

At this moment, I suddenly realized: Ah! Matchsticks can dance, so that's it!