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Who described atoms as old spheres and said that different spheres made up the different elements
John Dalton
In what year did J.J.Thomson change the 'solid sphere' theory to the 'Plum Pudding Model'?
1897
Describe the 'Plum Pudding Model'
Large positive sphere with smaller negatively charged particles inside.
Who showed the 'Plum Pudding Model' was wrong?
Ernest Rutherford
What did Rutherford 'fire' at the extremely thin sheet of gold?
Some particles were deflected but most went straight through
Did Rutherford come up with the nuclear model?
Yes
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