1. The reason why the non-stick pan does not stick to food is because the bottom of the pan is coated with a special substance: "Teflon", whose chemical name is PTFE and its common name is Plastic King.
After strenuous exercise, I feel sore all over. This is because lactic acid in my muscles has increased.
3. After the first frost, the taste of vegetables and radishes is sweet, because the starch in vegetables is hydrolyzed by enzymes in plants to produce glucose.
4. The original works of ancient calligraphers in China can be preserved to this day: ink or carbon ink is used to make the handwriting not fade for a long time, which is because the chemical properties of carbon are stable.
A lamp made by filling a quartz tube with a certain gas can emit hundreds of millions of times more light than a fluorescent lamp after being electrified, so it is called "artificial small sun". The gas in this lamp is xenon.
6. A woman processed a 6. 10g old gold ring into a pair of goldsmith's earrings. She was afraid that the craftsmen would steal or adulterate gold, so she stayed by. She saw the craftsman heat the ring, beat it and put it into the liquid. After many times of processing, a pair of beautiful earrings were processed. A few days later, the earrings were weighed with a balance, only 5.20 grams. Then the liquid used by craftsmen to steal gold is aqua regia.
7. A lamp made by filling a quartz tube with a certain gas can emit hundreds of millions of times stronger light than a fluorescent lamp after being electrified, so it is called an "artificial small sun". The gas in this lamp is xenon.