Question

Which part of John Dalton's theory was disproved by J.J. Thomson's cathode-ray tube experiments?
A. Atoms can join together
B. Atoms are small
C. Atoms are indivisible
D. Atoms can form new substances

Answers

GPT-4o mini
C. Atoms are indivisible

J.J. Thomson's cathode-ray tube experiments provided evidence that atoms are made up of smaller components, specifically electrons. This disproved the part of John Dalton's atomic theory that stated atoms are indivisible.