According to early chemists, which substances were classified as elements?

A.
those that had an atomic mass that could be measured

B.
those that had higher numbers of protons in their atoms

C.
those that could not be broken down further by physical means

D.
those that could not be broken down further by chemical means

Question

According to early chemists, which substances were classified as elements?	
 
 A.
those that had an atomic mass that could be measured
 
 B.
those that had higher numbers of protons in their atoms
 
 C.
those that could not be broken down further by physical means
 
 D.
those that could not be broken down further by chemical means

anonymous · Answer

D.
those that could not be broken down further by chemical means

gtxmuqsit · Answer

D is the correct answer as also djcool31 mentioned