The traditional, classical or popular (meaning of the people) ballad has been seen as beginning with the wandering minstrels of late medieval Europe. From the end of the 15th century there are printed ballads that suggest a rich tradition of popular music.
Definition of gasohol for English Language Learners. : a mixture of gasoline and ethanol that is used as a fuel for engines.
Sodium hydroxide is a strong base with the chemical formula NaOH. Ammonia water is usually a solution of NH3 and H2O mixed together to form NH4OH,. This is usually the stuff people clean with and is also a strong base. Ammonia (the gas) is just NH3.