Life hacks
The little common sense in life is something that each of us should have. They may seem insignificant, but they have a profound impact on our lives. Let's explore some fun life facts, learn about the science behind them, and how you can apply them in your daily life.
Common Sense 1: Does hot water cool down faster?
Answer: Yes. This is because hot water molecules are more active than cold water molecules, and they are more likely to release heat through the process of evaporation. Therefore, when hot water is exposed to air, its heat is more easily carried away, causing the temperature to drop faster.
Application: In cooking, it will be faster to use hot water if you need to cool the food. For example, when you're making coleslaw or sauces, using hot water can help the seasonings cool down faster so they mix better.
Common Sense 2: Why do metals rust?
Answer: Metals rust because they react with oxygen and water molecules in the air, causing oxidation of the surface. This process is known as corrosion.
Application: To prevent the metal from rusting, rust inhibitors or coatings can be used. In addition, storing the metal in a dry environment can also slow down the process of rusting. When cleaning metal items, use a soft cloth and a mild detergent to avoid further damage to the protective layer.
Common Sense 3: Why Do Fruits and Vegetables Last Longer in the Fridge?
Answer: Low temperatures can slow down chemical reactions and microbial growth in foods, thereby increasing their shelf life. In the cold temperature of the refrigerator, the metabolism of fruits and vegetables slows down, so they retain their delicious taste and nutritional value for longer.
Application: In addition to storing food in the refrigerator, plastic wrap or airtight containers can be used to reduce the chance of food being exposed to oxygen and moisture, further extending the shelf life. At the same time, avoid putting foods with large temperature differences together to avoid condensation and accelerated spoilage.