133k views
3 votes
Which of Dalton's ideas about the atom did J.J. Thomson's experiment disprove?

It disproved that atoms are divisible.
It disproved that atoms are indivisible.
It disproved that atoms contain protons.
It disproved that atoms contain electrons.

User GraehamF
by
4.6k points

2 Answers

4 votes

Final answer:

Dalton's Atomic Theory was disproved by J.J. Thomson's experiment, as it showed that atoms can be broken apart into smaller subunits or subatomic particles such as electrons, protons, and neutrons.

Step-by-step explanation:

Dalton's Atomic Theory explained a lot about matter, chemicals, and chemical reactions. Nevertheless, it was not entirely accurate, because contrary to what Dalton believed, atoms can, in fact, be broken apart into smaller subunits or subatomic particles. We have been talking about the electron in great detail, but there are two other particles of interest to us: protons and neutrons.

User Sergio Monteleone
by
5.5k points
1 vote

Answer:

It is disproved that atoms are indivisible. Which is answer choice B.

Step-by-step explanation:

I got it right on Edge. :)

User Dane Brouwer
by
4.9k points