zoutenA salt is a chemical compound of positive (cations) and negative ions (anions), which are interconnected by electrostatic attraction. It is in solid aggregate state as a crystalline substance in which the positive and negative ions in a crystal lattice are arranged. Colloquially with salt is usually table salt (sodium chloride or NaCl) intended.

Many solids have a crystalline structure, they consist of a regular pattern (grid) of molecular, atomic or ionic structural units, which are the building blocks of a crystal.
Crystal structures are characterized by their symmetry.
In addition to crystalline solids, there are glass structures (non-crystallized clotting) and amorphous structures. The latter are not liquid and non-crystalline, e.g. candy, beeswax, paraffin, amber, opal, polymers like polystyrene...

In our body occur constantly assimilation (building) and dissimilation (degradation) of connections. This is called metabolism.
Previously, in alchemy people always were looking for ways to transform metals (into gold).
Many substances may be usefully employed if they have the correct composition (and concentration).

Scolar: someone who knows everything that the others do not know, and knows nothing of what the others know.” (Albert Einstein)

"Today, drugs are so effective that they can no longer be regarded as safe for health. " (John Boschmans)