Conjecture: Adding impurities to water lowers the freezing point
Reason: Adding salt to water lowers the freezing point
Experimental process:
1. two identical cups Fill an equal amount of water
2. Add salt to a cup and mark it, insert a chopstick of the same thickness as the thermometer into the water
3. place it in the refrigerator
4. Once it has frozen into ice, insert the thermometer into the ice and wait for it to melt
5 Measure the melting point
It is our duty. If I do this, the teacher's instructions are correct.
What is the effect of heating cold water, adding salt and mixing it well. ?
Producing body fluids, heat relieving and palatable. Lemons have asour and a little bitter taste. They cannot be eaten like other fruits, they are soaked in water and contain lemon peels. aromatic and volatile components, which have a magical effect on freshness and palatability; in the morning Drinking a glass of salty lemon water from time to time can soothe the breath. It has a certain effect on morning sickness in pregnant women. vomit, place it next to you and smell it.
Effects of adding salt to lemon water:
1. It can produce body fluids, relieve heat and whet the appetite. Lemon has a sour and somewhat bitter taste. It is impossible to eat it like other fruits. Most of the time it is soaked in water and drunk with lemon zest. It contains aromatic and volatile ingredients, which have a magical effect on freshness and palatability. Many times, after working or studying for too long and feeling tired. pfix a cup of lemon salt water for refreshment and appetizer.
2. Drinking a glass of lemon salt water early in the morning can ease breathing. It has some effect on morning sickness in pregnant women. When you feel uncomfortable and vomit, place it next to you and smell. he.
3. Clear heat and resolve phlegm When the weather is dry in autumn, you will often feel like you can't cough up phlegm, which is very uncomfortable. In fact, phlegm is caused by a build-up of moisture. and turbidity. Lemon is even more effective than orange. Mix lemon and warm water with a small amount of salt and drink it for some time to remove thick phlegm.
Precautions for soaking lemon salt water:1. It should be light. Soak a large piece of lemon with the zest in a little water, which can fill 3 to 4 small cupssses. This type of lemonade does not have a pronounced sour taste, can be drunk without added sugar or honey, and contains almost negligible energy.
2. The skin should be removed, because the skin of lemon contains compounds rich in flavonoids and lemon essential oil is mainly found in the skin.
3. The slices should be thin, otherwise the aromatic components of the lemon zest will not be easily absorbed.
Heat boiled water, add salt and mix thoroughly. Drinking it can clean the stomach and intestines, protect the mouth, prevent bacteria, prevent colds, detoxify and clear heat.
In addition to being an essential seasoning, saltIn addition to the product, it also has considerable functions in health care. Traditional Chinese medicine believes that salt has detoxifying, heat clearing and moisturizing effects. The most powerful explanation isRubbing salt on sores can reduce inflammation.
Drinking a cup of lightly salted water on an empty stomach after getting up in the morning can help reduce internal heat and nourish the kidneys, keep stools smooth and improve digestion function and absorption from the gastrointestinal tract. When your throat is inflamed, you can drink a glass of salt water in the morning. Several times a day, it has anti-inflammatory and analgesic effects.
Older people often gargle their throats with lightly salted water to prevent respiratory infections.