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Chemistry Scientist

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Democritus

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Terms in this set (9)

He was a philosopher who argued that matter was made of indivisible particles

Associated with the "billiard ball" model of atom

Experiment with Cathode- ray tube

Discovered that atoms have positive and negative parts

Coined the term electrons

Ernest Rutherford

His experiment led to the idea that most of the mass of the atom is concentrated in a tiny "nucleus"

Used alpha particles shot through gold foil

Period Table Arrangement