In ancient times, the salt in seawater was extracted by boiling seawater, and in modern times, salt is mostly extracted by solarization of seawater, boiling of well water and salt lake water.

Salt is a class of substances in compounds. Salt, which is often referred to in daily life, generally refers to table salt alone, which is actually a salt-like substance. And the salt in the chemical scene refers to a class of compounds containing anions of salt-forming elements and metal cations, such as potassium sulfate, sodium bicarbonate, sodium acetate and so on. Most salts appear as crystals or powders and can be hydrolyzed in solution.

Salts are generally more stable than the corresponding acids and bases. Therefore, salts are easy to separate and purify from mixtures and are also easier to store, transport and measure. Salts are widely used in various fields of life, such as sodium carbonate as a building material, sodium acetylsalicylate as a medicine, and table salt with monosodium glutamate as a condiment.

Common salt naming

Common salt basically consists of two parts, the anionic acidic ion part, and the cationic ion, i.e., the metal ion or the electropositive ion part, in general naming will be the electronegative part of the acidic ion will be placed in front of the naming, and the electropositive part of the metal cation or the electropositive ion part will be placed behind the naming, i.e., the anionic part will be placed behind the naming, i.e., the acidic ion part will be put in front of the naming. Part of the naming put behind, that is, the anion in the front, the cation in the back.

For example, in NaCO3, CO32- is more electronegative, and Na+ is more electropositive, so it is named sodium carbonate. Based on the type of cation that makes up the salt, the salt can be divided into sodium, potassium, calcium, etc.

Based on the type of the acid part of the composition of the salt can also be divided into hydrochloride, sulfate, nitrate, carbonate, carboxylate, etc., of which the acid part of the hydrochloric acid, sulfuric acid, and other inorganic acid acid salt for inorganic salts, part of the acid part of the organic acid salt for organic salts.

Reference: Baidu Encyclopedia-Salt