Scientific Models Of The Atom

Question 1

Before the discovery of the _____________, atoms were thought to be tiny spheres that could not be _________________

Answer 1

Electron

Divided

Question 2

What model did the discovery of the electron lead to?

Answer 2

The plum pudding model of the atom

Question 3

What did the plum pudding model of the atom show?

Answer 3

That Atoms were a ball of positive charge with negative electrons imbedded inside of it

Question 4

Whos discovery led to the plum pudding model being replaced by the nuclear model?

Answer 4

Ernest Rutherfords.

However the experiment itself was carried out by Hans Geiger and Ernest Marsden

Question 5

Which scientist adapted the nuclear model by suggesting that electrons orbit the nucleus at set distances?

Answer 5

Neils Bohr

Question 6

Which scientist developed evidence to show the existence of neutrons within the nucleus in 1932?

Answer 6

James Chadwick

Question 7

Why did new evidence from Rutherfords scattering experiment lead to a change in the atomic model?

Answer 7

Rutherfords experiment proved that there was a lot of charge in the centre of the atom and less surrounding it as a pose to the charge being evenly distributed throughout the atom.

The highly charged area in the centre was called the nucleus