Chadwick
Bohr
Thomson
Rutherford
Democritus and Leucippus
100

James Chadwick won the Nobel Peace Prize in what year ?

1935

100

What did Neils Bohr change about Rutherfords model to improvethe model ?

Bohr introduced quantized electron orbit

100

What was the model that J.J. Thomson created ?

The Plum Pudding Model

100

What experiment did Rutherford use to find that atoms have a tiny dense, positively charged nucleus ?

The Gold Foil Experiment

100

Why were Democritus and Leucippus not credited for the idea of the atom ?

The lack of evidence to support their theory to show it was true

200

How did Chadwick's discovery of the neutron improve the understanding of Isotopes ?

It explained that the nucleus contained both protons and neutrons, which showed isotopes could be the same element, but have different masses

200

What was wrong with Bohr's version model of the atom ?

It struggled to explain atoms with more than one electron

200
What name did J.J. Thomson call the electron ?

Corpuscles

200

What year did Rutherford propose the nuclear model of the atom ?

1911

200

When thinking of Leucippus and Democritus, the "creators" of the first atomic theory, how did they come up with their theory ?

They developed the theory via philosophical responses due to paradoxes

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