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What did Democritus believe?
What were the problems with Democritus' theories?
What were the elements of Dalton's atomic theory?
Between what range do the radii of most atoms fall into? What instruments can be used to view them?
What are the three types of particles?
Who discovered the electron and how?
What did Robert Millikan discover?
Who discovered canal rays and, consequently, the proton?
What did James Chadwick discover?
What was J. J. Thomson's atomic model?
What took place in Ernest Rutherford's gold foil experiment and what did he conclude?
What are the characteristics of Rutherford's "nuclear atom" model?
