Misc: Some Eskimos have been known to use _________ to keep their food from freezing?

Questions

Chemistry Sodium bicarbonate is better known as ?

Chemistry Sodium Hydroxide is more commonly known as ?

Chemistry The process of removing salt from sea water is known as ?

Chemistry The smallest portion of a substance capable of existing independently and retaining its original properties is a(n) ?

Chemistry This ancient attempt to transmute base metals into gold was called ?