People are interested in the things that happen around them. Like these: “How did the world come to be? Why don’t we just drop out of this world? “Why does the sun rise in the east?” is a question that many people have asked and tried to answer. People have noticed, but have not been able to explain, the fact that hot water freezes faster than cold water. Aristotle was the first person to notice this.
Figuring out why there is water on the surface of the Earth is a big question. But there’s one more big mystery. Here’s the riddle: “Hot water freezes faster than cold water.” This is called the Mpemba Effect. When liquids get cold, they usually get more dense. Water is not like other liquids, though. At 4 degrees, the water is at its densest, and before and after this point, it starts to get less dense again. Ice floats on top of water because it is less dense than water. This mystery is actually one of the main reasons why there is life on Earth. Because of this, the living things in the water can find a place to live where they won’t freeze. If it were possible to make ice that was denser than water, it would start to freeze from the bottom of the ocean, making it impossible for sea creatures to find a safe place to live. In addition to this strange state of water, there is something called the Mpemba effect. This mystery is called the “Mpemba effect” because Mpemba was the first person to notice that ice cream made with hot ingredients freezes faster than ice cream made with cold ingredients. We didn’t know what the Mpemba would do until now.
There are many things that can lead to the Mpemba Effect. The Mpemba is caused by only one thing or a combination of things. The mass of the liquid is one of the things that makes the Mpemba work. Another effect is the convective current, which is caused by the way the temperature of the water at the cap is spread out. From the outside, cold and hot water may look the same, but they may have different amounts of dissolved gas. There is less gas in hot water than in cold water. But the Mpemba effect can be seen when the same amount of gas is dissolved in both liquids.
Even though there are a lot of ideas about this, there isn’t a proven answer yet. The most scientific answer to this question is that it may have to do with the structure of hydrogen bonds, which chemists just found out about. Water molecules stick together because of hydrogen bonds. The energy is stored in these covalent bonds. Covalent bonds may be the reason why hot water freezes faster than cold water.
When scientists figure out how hydrogen bonds work, this mystery will be solved.
Info source – Steemit