The development of The Model Of The Atom

Question 1

Pre 1900, What is John Daltons interpretation of an atom?

Answer 1

A solid sphere made up of different elements that cannot be divided

Question 2

Plum pudding 1897, What is JJ Thompson’s interpretation of an atom?

Answer 2

A ball of positive charge with negative electrons embedded in it and it must contain small negative charges

Question 3

1909, What is Ernest Rutherford’s interpretation of an atom?

Answer 3

Positively charged nucleus at the centre surrounded by negative electrons and the mass was concentrated at the centre of the atom

Question 4

1913, what is Bohr’s interpretation of an atom?

Answer 4

The electrons orbit the nucleus at specific distances and this was supported by experimental observations

Question 5

What is James Chadwick do with the atom?

Answer 5

Provided the evidence to show the existence of neutrons within the nucleus

Question 6

What is Rutherfords scattering experiment?

Answer 6

A beam of alpha particles are directed at a very thin gold foil and most passed right through but a few were deflected back by the positive nucleus