Question

The model proposed by John Dalton was helpful in advancing our understanding of the atom. What aspect of his model was actually incorrect?
A. Matter is made of atoms.
B. Atoms cannot be broken down into smaller pieces.
C. Atoms of different elements have different sizes and masses.
D. Atoms combine to form compounds.

Answer 1

The answer in here is B. Dalton was incorrect saying that atoms were the indivisible components of matter. Indeed that the atom could not be broken down.