Scientific knowledge manuscript 1
Ants, I believe everyone is familiar with them. Then who can really understand ants? Why don't ants get lost? With this question, I consulted some books. According to the book, ants leave some smells along the way after starting from the nest to their destination, and then return to the nest. Touch each other with tentacles and notify other ants. Scientists have done an experiment on this problem. Scientists first identify an ant and vigorously clean up the place where he reaches his destination along the way. When the ant came back, it suddenly stopped at the place where the smell was wiped off. Looking for something while walking in circles. People come to the conclusion that ants can tell their directions by their sense of smell. In order to confirm this conclusion, I did an experiment. I first prepared a twig about 10 cm, and put the bait-small candy on one end of the twig. I put this device near an ant nest. After a while, an ant came out to explore the road. After I led him to the stick, it went to the candy place, as if it were sniffing around. I took this opportunity to cut off the broken part of the stick by one centimeter. When the ant came back, it turned left and right where it was cut off, but it couldn't find its way home. After a while, I repeated the above experiment, and the ants still didn't find their way home. Through these two experiments, I finally know the secret of ants not getting lost. It turns out that ants can tell the direction by smell.
Scientific knowledge manuscript II
I read in the book today that VC tablets can make iodophor water transparent. I'm curious, so I want to try it myself. When I got home, I rummaged through the wardrobe and found coke bottles, iodophors and VC tablets. First of all, I pour clean water into an empty coke bottle, which is about 150 ml, but how can I turn clean water into coke? That is to pour 50 ml of iodophor into clear water, so that the original transparent clear water becomes brown "coke". If you look with your eyes, you can definitely tell the truth from the false. "The next step is to witness the miracle!" Yes, this sentence is the mantra of magician Liu Qian, and I imitated what I said to my parents. I took out 5-6 pieces of VC from the side and threw them into the "Coke" one by one. Slowly, the color of coke faded. In order to make it transparent faster, I covered it and shook it hard. In less than five seconds, the color of coke changed from dark brown to transparent. Wow, that's amazing! Mom and dad felt incredible and asked me how it was done. But I don't know the principle, just follow the steps written in the book step by step. In order to know the principle, my parents and I searched online. It turns out that this is because elemental iodine is colored, while iodine ion itself is colorless. VC has a strong reducing performance, which can reduce iodine to iodine ions. So "Coke" will naturally become "Sprite". Science is really amazing. It comes from nature and serves mankind after being discovered by human beings, so I should observe attentively and learn more knowledge. The little experiment made me fall in love with science.
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