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 are small.
Atoms are small.

Atoms can join together.
Atoms can join together.

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 the existence of subatomic particles (electrons), indicating that atoms are indeed divisible.