Question

The observations and results of Thomson's cathode ray experiment led to what change to the atomic model? (2 points)


the addition of negatively charged electrons

the addition of a small, positively charged nucleus

the addition of neutral neutrons to the nucleus

the addition of energy levels in the electron cloud

Answer 1

I think it's A? @mikey @directrix

Answer 2

yes

Answer 3

i believe so

Answer 4

Key points

J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.

https://www.khanacademy.org/science/chemistry/electronic-structure-of-atoms/history-of-atomic-structure/a/discovery-of-the-electron-and-nucleus

Answer 5

From that, I get this:

the addition of negatively charged electrons

Answer 6

So you believe the answer is A too?

Answer 7

Correct. I found a reference (see link) with that info.

A

Answer 8

Ok thank you!!!

Answer 9

You are welcome.