1. Chemical definition
The chemical definition of salt, i.e., the broad definition.
In chemistry, salt refers to a classMetal ionsorAmmonium ion (NH+).withAcid ion bindingofCompounds,In general, salt isMetathesis reactionof products, of course, other types of reactions such asDisplacement reactionSalt can also be generated.
2. Definition of life
The life definition of salt is a narrow definition. In daily life, salt mainly refers to table salt with sodium chloride as the main ingredient.
Through the above definition of salt, we can judge whether sodium sulfide is salt or not.
According to the narrow definition of salt, which is the life definition of salt, since sodium sulfide is not sodium chloride, sodium sulfide is not salt under that definition.
According to the broad definition of salt, i.e., the chemical definition of salt, sodium sulfide is salt. The sulfur in sodium sulfide is produced by hydrosulfuric acidAcid ions, while sodium belongs to metals, so sodium ions areMetal ions, so sodium sulfide is a substance formed by the combination of acid ions and metal ions, which fully meets the chemical definition of salt.
Actually, the above content has answered the question of whether sodium sulfide is salt or not. But in the spirit of drawing inferences, I would like to write a little more.
For the issue of attribution, the first step is to clarify the basis for determination, and the definition is a strong basis for judgment. The second step is to compare the content of the thing to be determined with the content of the judgment basis to determine the scope of ownership; The third step is to make a judgment based on whether there is a scope of attribution.