What is an acid? Detailed answer

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What is an acid? Detailed answer

Big encyclopedia for children and adults

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What is acid?

Often newspapers publish reports that someone has been burned with acid. Indeed, we all believe that acid is a very dangerous liquid that burns the skin and burns through tissue.

But this applies to a small amount of acids. The acids that are present in foods are essential for our health. Other acids are used in the manufacture of medicines, paints, cosmetics and industrial products.

There are many types of acids, but they can all be divided into two classes - inorganic and organic acids. Let's get acquainted with the most significant representatives of each class.

Sulfuric acid is widely used in industrial production. It is harmful to the eyes and causes skin burns. Another strong acid is hydrochloric acid. It is obtained by combining sulfuric acid and sodium chloride. It is used in the production of various chemical compounds and in the cleaning of metal surfaces. The human body produces a small amount of weak hydrochloric acid, which is used in the digestion of food.

Nitric acid is also a strong acid and is also harmful to the eyes and skin. Boric acid, on the other hand, is a weak acid. It occurs naturally in Italy. It is used in the manufacture of ceramics, cements, and cosmetics. Sometimes it is used to fight germs, but it is not effective enough. Carbonic acid is obtained from carbon dioxide, some of it is added to fruit drinks. Arsenic acid is used in the manufacture of disinfectants.

Organic acids are not as strong as inorganic acids. Acetic acid is found in vinegar, it can be obtained from the fermentation of apple cider. When sugar is formed in milk, lactic acid is formed. It oxidizes milk but is also used in cheese making.

The use of amino acids contributes to maintaining good health, we get them with protein foods. Oranges, lemons and grapefruits contain ascorbic acid - this is the chemical name of vitamin C. Nicotinic acid is present in the liver, poultry meat, beef, it prevents the development of skin diseases.

As you can see, this difficult story about acids can be continued for a long time. Some of them are dangerous to humans, but useful in industry. Others are necessary for human life support and are present in food products. There are acids that are produced by our body and are necessary for its life.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What mountains are sacred?

Mount Fuji (Fujiyama) with a height of 3776 m, the highest peak in Japan, is the holy mountain of the Shintoists. There is no other mountain in the world that has been depicted so many times in paintings, postcards, etc.

Mauna Kea in the Hawaiian Islands with a height of 4202 m is a sacred mountain for local residents. If we consider the height of this volcano from the very foot, then it is the highest peak in the world - over 10000 m. However, the foot of Mauna Kea is located below the level of the Pacific Ocean.

Olympus in Greece with a height of 2918 m was the home of the gods for the ancient Greeks. Muses lived on Parnassus (a mountain range in central Greece with a height of 2457 m).

Mount Sinai (the exact place is unknown, is identified with Mount Jabal-Sirbal in Egypt (2637 m)) is sacred to Jews and Christians. They consider this mountain to be the place where Moses received the Ten Commandments from the Lord.

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