I have heard that there are two things, one is potassium iodide and the other is lead acetate. If you want to make a system of the two, you can see how it changes.

Prepare potassium iodide first, the color is white and pure, the shape is like a fine powder, and the sex is peaceful. Also take lead acetate, which is also white, with a crystalline shape and a little foreign gas.

Put potassium iodide in the container, and slowly pour the solution of lead acetate into it. Russia, seeing the two touch, the solution gradually changes, and there is a yellow thing living, its color is bright, like a heavy cloud, slowly falling. This is the fruit of the combination of the two, and it becomes a new thing.

The material changes are indescribable. The combination of potassium iodide and lead acetate gives birth to this heterochromatic sinking, a wonder of real chemistry. Looking at this change, we can see that substances meet and transform according to their nature, or change their shape, or quality transfer. This is an esoteric principle, and we sincerely wait for our generation to explore it.