Question

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

Atoms are indivisible.
Atoms are indivisible.

Atoms can form new substances.
Atoms can form new substances.

Atoms are small.
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:

**Atoms are indivisible.**

Thomson's experiments showed that atoms could be divided into smaller particles, leading to the discovery of the electron.