What are the differences of salt and sugar?

Question

What are the differences of salt and sugar?

Answer 1

Well, first of all, salt is salty and sugar is sweet.

That aside... salt is an inorganic compound. Its elements, Na and Cl, are bonded together by an ionic bond.

It dissociates into ions, so it increases boiling point and decreases freezing point more effectively than the same molality of sugar.

Sugar, on the other hand, is an organic compound. It is a carbohydrate, a compound of C, H and O. The elements are bonded together covalently.

It does not dissociate into ions.

Answer 2

A LOT.  Salt is a generic term for any ionicly bonded compound, the most well known of which is NaCl or table salt.  All salts are very simple, consisting of one anion species and one cation species (although you may have multiple members of that species like K2SO4).

Sugars are organic compounds.  They are covalently bonded (sharing electrons rather than one side taking the electrons away like in ionic bonds).  There are three "monosacharides" which are called fructose, glucose, and galactose.  Different combinations result in disacharides (two sugars).  Sucrose (sugar you buy in the store) = gluctose + fructose, for example.  

Salts are highly soluble, and dissociate when dissolved.  Sugar molecules are still sugar molecules when dissolved, they don't dissociate.

Hope this has helped.