Answer:
he model of the atom changed and what additional evidence would require the model to change again.
because ;
Explanation:
This atomic model has changed over time. Scientists used the model to make predictions. Sometimes the results of their experiments were a surprise and they did not fit with the existing model. Scientists changed the model so that it could explain the new evidence.
Atomic model keep changing because the electrons around the nucleus are not fixed and they keeps rotating or changing their position in valence orbits around the nucleus. In one moment they are present on one side of the nucleus and at very next moment they will be on the other side due to their continuous rotation.