Question

Which part of John Dalton’s theory was disproved by J.J. Thomson’s cathode-ray tube experiments?(1 point)
Responses

Atoms can join together.
Atoms can join together.

Atoms are small.
Atoms are small.

Atoms are indivisible.
Atoms are indivisible.

Atoms can form new substances.

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 contain smaller particles (electrons), which showed that atoms are not indivisible as Dalton proposed.