Question

Several models of atoms are mentioned in this lesson. Plum pudding, planetary and quantum mechanical. Which reason below explains why there are different atom models?

Because atoms have changed their structure over time

Because there are different types of atoms

Because the ideas about the models changed as more discoveries were made about the atom

Because many people came up with models at the same time

Answer 1

Because the ideas about the models changed as more discoveries were made about the atom

Step-by-step explanation:

The structure of the atom was not always known and it took many discoveries to fully figure it out. Through these discoveries, many models were proven invalid; though they still helped in the long run by providing a basic idea on the basis of an atom.

Remember, models are able to change over time, they are merely theories after all; and scientific theories change, unlike laws.