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chapter 4 and 5 chem
Question | Answer |
---|---|
Democritus | named atom "atomos" declared indivisible |
Thomson | discovered electron, originally called corpuscle. "plum pudding model" |
Millikan | charge of electron=1.6x10^-19 |
Rutherford | discovered nucleus:dense and positive |
Chadwick | discovered neutron |
Bohr | Electrons travel in fixed paths |
What is a black light? | Lamp that emits UV rays |