How to do the experiment of dancing red beans?

The experimental principle of dancing red beans is that baking soda reacts with white vinegar to produce carbon dioxide, and bubbles attach to red beans to increase buoyancy and become the swimming ring of red beans. In addition, the bubbles that constantly react to the upwelling float to the water surface with red beans, and the bubbles burst after touching the air or other red beans. Red beans fall to the bottom because they are too heavy, and so on ~

Experimental process:

1 transparent bottle, add two spoonfuls of baking soda, pour a little tap water, and stir with a wooden stick (chopsticks).

Pour a small amount of white vinegar many times, and be careful not to pour too much water.

3 finally pour in red beans and observe the changes of red beans together ~

1. Before the experiment, parents can let their children guess whether red beans will "dance" by themselves when put into water.

2. In the experiment, parents can encourage children to pour white vinegar, but they should pay attention to a small amount many times to prevent white vinegar from overflowing.

3. After the experiment, parents can encourage their children to find and try other small items at home, such as rice, black beans, soybeans, mung beans and other products, instead of red beans to "dance" and experience the happiness brought by scientific experiments.