The first model of the atom was developed through
scientific experimentation and data analysis with water vapor and gases.
observation of the light emitted by elements when they are heated.
thinking about the smallest particles of matter without experimenting.
analyzing the effects of a magnet on the path of a cathode ray.
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Democritus
DemocritusAround 450 B.C., the Greek philosopher Democritus introduced the idea of the atom. However, the idea was essentially forgotten for more than 2000 years. In 1800, John Dalton re-introduced the atom. He provided evidence for atoms and developed atomic theory
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analyzing the effects of a magnet on the path of a cathode ray.
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