Chalk that will blow bubbles

"Successful, successful." Hey? That is the voice that came from it. It turned out that our class is doing experiments on chalk!

The teacher first asked us to take a piece of chalk, and then carefully observed it on the hand, but I could look left, but I still didn’t see that the chalk would blow bubbles. We are a little bit frustrated. I think again that the fish will spit in the water. Is it going to be put into the water? We put the water on the hand and put the chalk into the water, but the chalk is still No bubbles. We are even more frustrated, and we are almost without confidence. So, the teacher asked us to put the chalk directly in the basin, but the chalk still does not spit bubbles. What is the phenomenon? Some people actually threw chalk on the ground. Some people still think about using dry chalk? Others think, how can we let the chalk spit bubbles? We returned to our seats with a dejected look. At this time, the teacher said to us again: "It doesn't matter, let's try it with dry chalk!" One person followed the past. Suddenly she screamed out of the bubble and spit it out. "We heard this sentence and we rushed." past. We are very excited, do you want to know why?

Because the chalk itself has a gap, and the calcium carbonate in the chalk is a strong base weak acid water and water will react.

I must pay attention to my life in the future, because life is learned everywhere.

Third grade: 1328135840