chemical science vs membered

chemical science is a noun but membered is not a noun.

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

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

chemical science (adjective)	membered (adjective)
	having members; normally used in chemistry in combination with a number