Question

Scientists have changed the model of the atom as they have gathered new evidence. One of the atomic models is shown below.

A purple center outlined in black with two concentric black circles around the center, the inner circle having 2 small green balls on it and the outer circle having 8 small green balls on it.


What experimental evidence led scientists to change from the previous model to this one?


A few of the positive particles aimed at a gold foil seemed to bounce back.

The colors of light emitted from heated atoms had very specific energies.

Experiments with water vapor showed that elements combine in specific proportions.

Cathode rays were bent in the same way whenever a magnet was brought near them.

Answer 1

B: The colors of light emitted from heated atoms had very specific energies.

Step-by-step explanation:

Answer 2

B: The colors of light emitted from heated atoms had very specific energies.

Step-by-step explanation:

In Thompson's model of an atom the atom is said to be constituted of electrons which are surrounded by a haze of positive charge in order to balance the electrons' negative charges. It is also called plum prodding model because of negatively charged plums which are surrounded by the positively charged pudding.

Now, as the electrons move from higher to lower energy levels a photon which is a particle of light will be given off.

Thus, the correct answer is option B