History of atoms

Question 1

state the models in order of time

Answer 1

1. Atomic model by John Dalton
2. Plum Pudding by J.J Thomson’s
3. Nuclear model by Rutherford

Question 2

what is the difference between the ‘atomic model’ and the ‘Plum pudding model’

Answer 2

• Dalton describe the model as a solid sphere and that different spheres represent different elements.
• whilst the plum pudding model showed that there are negatively charged particle called electrons on a positively charged pudding
• Later electron shells and protons and neutrons were found