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The top documents tagged [rays cathode rays]
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J.J. Thomson Sir Joseph John "J. J." Thomson Born: 18 December 1856 Died: 30 August 1940 Born in Cheetham Hill, Manchester, England
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Chapter 3 Atoms and Moles. Early Atomic theory 4 element theory Matter is made of atomos Alchemy Robert Boyle – proved water could be broken down; disproved
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Atomic Theory PS 9.26 PS 9.27 What is the nature of matter? The ancient Greeks pondered that question. Empedocles in 460 B.C.suggested that all matter
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