Question

A) 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 can join together.
Atoms are indivisible.
Atoms are small.

Answer 1

The part of John Dalton’s theory that was disproved by J.J. Thomson’s cathode-ray tube experiments is: **Atoms are indivisible.** Thomson's experiments demonstrated that atoms consist of smaller particles (electrons), indicating that atoms can be divided into subatomic components.