Question

Which is not part of John Dalton’s atomic theory?

a. All elements are composed of atoms.

b. Atoms of different elements have different masses.

c. All atoms of the same element have the same mass.

d. Atoms are made up of smaller particles.

Answer 1

The answer is C because they are made up of different sizes and mass.

Answer 2

The correct answer is D. Atoms are made up of smaller particles.

Explanation: