Science is everywhere in our lives: the squeak when we take off our sweaters in winter; Putting a coin on a cup full of water won't sink ... all this is waiting for us to discover and explore. We should learn to be "spies" in life and explore the mysteries.

Once, I helped my mother cook in the kitchen. I didn't expect to be very busy, but I also helped-mixing peppers with salt. Okay, it's over. The particles of salt and pepper are so small that I can't separate them in a short time. Now, I only have two ways. One is to patiently separate bit by bit; The second is to pour salt and pepper into a small box with holes to let the pepper leak out; The third is to separate them by scientific means.

Let's do it. I adopted the first method first.

I brought two dry plates. I put on disposable gloves and separated them bit by bit. But in less than two minutes, my hands and feet became numb. Look at the food, there is only a few salts. I suddenly lost confidence in this move like a deflated ball.

The first move is useless, so we have to take the second move.

We pour pepper and salt into the small box and shake it vigorously. We thought there was a hole in the box. Pepper was smaller than salt, and pepper leaked out of the hole, while salt was bigger than pepper and wouldn't fall off. But we are wrong, this method can't separate them well. Either the hole is too small, so that neither pepper nor salt leaks out, or the hole is too big, so that both pepper and salt leak out.

It still didn't work. What else can we do? At this time, Zhu Yilin said, "If only pepper were iron filings, we can separate them with magnets." "Yes, we can use suction. We have done scientific experiments on friction electrification. When we take off our sweater in winter, it will make a squeaking sound and stick dandruff and hair on the bed to the sweater. " Why don't we separate salt and pepper by triboelectrification?

I found a small plastic spoon and a small plate to use.

This time, I took a small plastic spoon and rubbed it on my clothes to make it generate static electricity, so as to achieve the effect of sucking pepper. After rubbing for a certain time, I put the spoon on the salt and pepper. As I expected, the pepper stuck to the bottom of the spoon like a demon, and finally I felt that the pepper was firmly adsorbed on the spoon.

This is really a miracle! I quickly put the pepper on a small plate prepared in advance and shouted, "I succeeded!" " I made it! "It turned out that the plastic spoon rubbed on the clothes and generated static electricity. Because pepper is lighter than salt, it sucks!

I finally found out how to separate the mixed pepper and salt! I think this "spy" is successful!