Question

Question:

Answer 1

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
I not sure on this one, going between a and d

A neutral atom has an atomic number of 14 and a mass number of 30, how many protons, neutrons, and electrons are found within the atom? (2 points)

30 protons, 14 electrons, and 30 neutrons
14 protons, 14 electrons, and 16 neutrons
14 protons, 16 electrons, and 16 neutrons
30 protons, 30 electrons, and 14 neutrons

This one I think it's B
An atom is determined to contain 34 protons, 36 electrons, and 34 neutrons. What are the mass number and charge of this atom or ion? (2 points)

mass number: 70, charge: neutral
mass number: 70, charge: +2
mass number: 68, charge: -2
mass number: 68, charge: +2

And I think this one is C

Answer 2

@sweetburger :)

Answer 3

First one I'm actually sticking with A

Answer 4

I cant remember if thomspon experiment was that of the gold foil in which some particles ended up deflecting resulting in the understanding that there is a centralized nucleus in an atom

Answer 5

Ruthersfurd was gold foil, I think

Answer 6

ok that clarifies things thanks

Answer 7

yep :)

Answer 8

So then ya he found negative particles in his experiment via how they bent. so A.

Answer 9

yeah, he discovered the electron

Answer 10

question 2 i agree its b.

Answer 11

Great :D

Answer 12

third should indeed be C nice work

Answer 13

thankkss !! :)