acidic vs chemical science

acidic is not a noun while chemical science is a noun.

Word	Noun	Adjective	Verb	Adverb
acidic	No	Yes	No	No
chemical science	Yes	No	No	No

acidic (noun)	chemical science (noun)
	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

acidic (adjective)	chemical science (adjective)
being or containing an acid; of a solution having an excess of hydrogen atoms (having a pH of less than 7)
being sour to the taste