Question

select the correct answer from the drop - down menu. ammonia is a gas made of one atom of nitrogen and three atoms of hydrogen bonded together. therefore, ammonia is a change of state a compound an element a mixture

Explanation:

A compound is a substance made up of two or more different types of atoms chemically bonded together. Ammonia has nitrogen and hydrogen atoms bonded, so it is a compound. An element consists of only one - type of atom, a change of state is a physical transformation like melting or boiling, and a mixture is a combination of substances not chemically bonded.

Answer:

a compound