? I did a small experiment-jumping eggs. Today I read a book "Interesting Scientific Experiment", which mentioned an experiment called "jumping eggs".

How can eggs dance? This aroused my curiosity. Anyway, I decided to do the experiment by myself.

In the evening, I dragged my mother to do this simple and interesting experiment.

I brought a bottle of white vinegar, a clean glass and an egg. I first poured half a cup of white vinegar into the cup, endured the pungent sour taste, and then gently put the egg into the cup. Finally, I waited patiently and observed carefully.

One minute, two minutes, three minutes ... after about ten minutes, nothing happened. I'm a little impatient, and I'm running away with oil on my feet. My mother stopped me and said, "son, be patient in everything!" " "I had to reluctantly come back and continue to observe.

About ten minutes later, the egg slowly hung in the cup, and many rising bubbles gathered on the surface of the eggshell. I gently pressed the egg with my finger, and the egg sank to the bottom of the cup and floated again, just like dancing. I asked my mother, "Why do eggs dance?" My mother explained to me: "Because after eggs are soaked in white vinegar for a period of time, the main component of calcium carbonate in eggshells will react with white vinegar and condense into small bubbles and deposit on the surface of eggshells." These bubbles keep bursting and rising, which makes the eggs rise, so that they sink and float, just like dancing. "

Ah! I can't believe that a small experiment contains such profound scientific truth. I must study hard and uncover more mysteries of nature in the future.

This is Unit 4, Book 2, Grade 3. I made a small experimental composition writing guide and model essay:

Unit 4 Guidance and Model essay of the second volume of the third grade composition: I did a small experiment.