History+of+the+Atomic+Model--Unit+2

(1) Who first thought of the idea of the atom? How was his idea accepted?

(2) Describe the postulates of Dalton’s understanding of the atom.

(3) What did Henri Becquerel discover? How did it happen? (4) What did J.J. Thomson discover? Briefly describe how he did this. (5) What was J.J. Thomson’s model of the atom called? Describe it. (6) What did Millikan find out about the electron? Briefly describe his experiment.

( 7) Describe Rutherford’s gold foil experiment.

(8) What significant information was learned from Rutherford’s gold foil experiment?

(9) Describe Bohr’s model of the atom.

(10) What particle did Chadwick discover? Why was this particle more difficult to identify?

(11) What is our current understanding of the structure of the atom?