The matter of barium acetic acid and ammonium sulfate
used to be in the same situation, and everyone studied the transformation of matter. During this period, the encounter between barium acetic acid (Barium Acetate) and ammonium sulfate (Ammonium Sulfate) was valued by everyone.

Barium acetic acid has its own characteristics. Ammonium sulfate also has its own characteristics. When the two meet in the kettle, they stir it up. Then, the transformation begins.

Barium ions and sulfate ions attract, and they combine to produce the sinking of barium sulfate. Its density is dense, white as snow, and falls on the bottom of the kettle. Acetate ions and ammonium ions exist in the liquid and coexist safely.

Everyone viewed this change and recorded their feelings in detail. Study the principle of transformation, the change of matter. Thinking about how to control the process, so that the advantages increase and the disadvantages decrease.

Since then, people have often taken this as a lesson, and they have also used it in the study of other things, hoping to gain more and solve all kinds of doubts.