Question

Which part of John Dalton’s theory was disproved by J.J. Thomson’s cathode-ray tube
experiments? (1 point)
Atoms can form new substances.
Atoms are indivisible.
Atoms are small.
Atoms can join together.

Answer 1

The part of John Dalton's theory that was disproved by J.J. Thomson’s cathode-ray tube experiments is that "Atoms are indivisible." Thomson's experiments demonstrated that atoms contain smaller particles, specifically electrons, which indicates that atoms can be divided into subatomic components.