When it snowed a few days ago, our school teachers sprinkled salt on the snow, and I don't know why, they just sprinkled salt on the snow in large bags, and I just watched from the sidelines, and then I thought of the reason, maybe the salt on the snow is so that the salt can prevent the snow from freezing and make it easier to walk.

Later, I found out that the principle starts from the chemical composition of salt. The composition of salt is potassium chloride and the composition of snow is water.

Potassium chloride is a chemical that is extremely soluble in water. When potassium chloride is dissolved in water, it produces an aqueous solution of potassium chloride, which contains potassium ions and chloride ions.

When water is about to freeze, there are chloride ions and potassium ions, which will destroy the crystalline structure of the water, so that the water cannot freeze.

In other words, salt keeps snow from freezing. In addition, the chapter on vapor pressure in chemistry explains: In fact, snow is constantly melting and solidifying, but the speed is the same, so it always remains solid!

We all know that the freezing point of salt water is lower than that of water, and when salt is sprinkled, the water around the snow becomes salt water, so it cannot solidify!

Then the snow will melt and it will not be able to solidify back, so there will be less and less! Besides, salt is cheap and polluting.

Therefore, when it snows, salt is often sprinkled on the road surface to prevent the snow from freezing, and the salt can melt the snow. However, due to the erosion of roads caused by salt water, many countries have not allowed the use of salt to melt snow, and the use of snow melting agents has been used!

Knowing such a truth, when I watched it the next day, I found that the effect was not obvious at all, the truth is true, but in real life, because the weather is too cold, although we say that we use a large bag of salt, but the snow on the ground is so thick, when you feel that you have spent a lot of salt, and when the salt and the snow on the ground melt together, you find that there is so much snow, and the salt sprinkled is insignificant, maybe there is not so much effect at all, and sometimes we also try to do what we want to do every time, only to find out later that we have done our best and used a lot of resourcesIn the end, the effect is insignificant, which makes us very sad, but in the end, we still don't blame ourselves, we don't blame the people around us, at least we have worked hard, tried, maybe the result of our efforts is failure, but next time, we will continue to try, there will always be a time when we will try to succeed in the problem, to solve, to solve, this is our progress and harvest in the process of continuous attempts.

The snow has been falling for a long time, the first time it snowed, we also felt that it was very inconvenient to go out, and we had a period of vacation, but the second time the university had a period of time, we did not have a holiday, we still stuck to the ordinary post, because there were still two or three days before the final exam, and we did not sprinkle salt on the wetland again, this was the only time, and then after the snow fell for a long time, many of us began to clean the snow in the snow, so that maybe the snow can melt faster when the weather is fine, and we have gradually developed the habit of clearing snowSometimes, we find that this is some of our physical exertion, and in the present time, we not only consume physical strength, exercise, but also sweep the surrounding snow clean, making the road more convenient to walk, isn't it a pleasure?

And we are also in such an environment slowly discovered, there is actually a better way, after a lot of things have happened, as long as you can think about problems independently, can be good at discovering problems in life, good at using your brains to think of better solutions to problems, will definitely find a better way.

For example, a few days ago, the water pipe on the balcony was the same, I found that the water pipe on the balcony was very difficult to produce water, but when my husband and I decided to install a water pipe, we found that it was inconvenient, so that the maintenance workers came over, and then connected a section of the water pipe, but then I found out that it was really not good at all, although it had cost a few hundred yuan, but the final effect was not ideal at all, and the water pipe was not installed at all, but I felt embarrassed, people were busy all morning, and wasted a lot of materials, so I gave the money to others, at least where is the hard work？

But it is not to solve any practical problems, in the end I also thought of a lot of problems, there are so many problems in reality, the key is to have a better way to solve the problem, for example, such a problem, and then I also thought of it, isn't it that there is water on the balcony on a rainy day, so that you can pile up some bricks here at the door of your room?

How deep is the water? The highest depth is only a few tens of centimeters, and I found that if you try a few bricks, won't the water run in?

It's still very cost-effective, and wouldn't it be nice to think of such a method in real life?

But at that time I didn't think of such a good way, and wasted a lot of money, when I really came up with it, only to find that such a method is simple and practical, and saved a lot of costs, and I also slowly told the people around me when I thought of such a problem, they were also happy to laugh, it is really a good way, and we sometimes find that when we do not find a better way, we still have to think more, the same problem, think about it, think about it like that, maybe there is really a better way, the key is how to think about how to use your brain to solve problems in real life, instead of using a mobile phone to solve problems, many times only to find that each of us has a head, everyone has thinking, he can even everyone have the meaning of independent thinking, only to find out that many people around us, not everyone's existence is meaningless, not everyone's existence is like occupying space and air, and many people around us also have independent experience, for example, the people around me, every time I do the same thing, some people do this, some people do this, although we are similar, there are many times the same, but at some time we are different, different timesMaybe we will really find that their practices are better than ours, or our practices are better than theirs, so that after a long time, it will become a kind of mutual reference, a kind of transmission and accumulation of each other's life experience.