When water evaporates, the bonds are broken

When does water evaporate?

Hello! This is a video on the subject of "water evaporates" You have probably already seen what happens when mom or dad puts a pot of water on the stove to cook pasta. At some point, when the water is really hot, it starts to steam. Or is that smoke rising to the ceiling? What is that, actually? What happens there? And now an apparently completely different question: When it rains, puddles form on the street. When it stops raining, the puddles gradually disappear. How is it that the water slowly disappears? Where is it going? We will pursue these questions in this video and you will see: The explanations for the two phenomena are almost the same! When water is heated in a saucepan, for example, the hot air above the surface of the water absorbs the moisture from the water. The water turns into water vapor, so to speak! This water vapor can then be seen rising from the saucepan. It is not only very hot, but also very humid because it contains very small water particles. That means: At first the water is liquid and gradually it becomes gaseous. One also says: The water changes from the liquid state to the gaseous state. So if the water gradually evaporates, does that mean that the water in the pot is getting less and less and at some point there will be no more water at all? Exactly! At some point all of the water passed into the air in small droplets, i.e. evaporated. Then the pot is empty! But what about the water in the puddle? It doesn't boil and still disappears! Yes, but water also disappears into the air when it's not boiling. Just a lot slower. You can do an experiment to do this - ask your parents to help you! Take two deep plates and fill them with water. It is important that the plates are the same and that the amount of water in both is exactly the same. You put a plate where the sun shines on it for as long as possible during the day. You put the other plate where the sun never gets to. For example, in a dark, shady corner. Now it just takes time. Check the plates every 3 days. For example, you can carefully dip a ruler all the way into the water and write down how much water is in the plate. Keep a table. What do you notice after 6 or 9 days? Correct! The water is slowly becoming less, they say: It evaporates. That is, small water droplets gradually go into the air. You have to find out for yourself whether it goes faster with the plate that is in the sun or the one in the shade! And that's exactly what happens to the rain puddles on the street: The water passes into the air as tiny invisible droplets, it evaporates! Just like the water in the plates. Water can change from a liquid to a gaseous state. This process is called "evaporating" when the water is boiling, or "evaporating" when it is not boiling. But you don't have to worry that the water in the bathtub will evaporate from under your nose before you can get in ... because it evaporates very slowly! Bye and see you next time!