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Section 1

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dalton

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Science

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Date created

Mar 1, 2020

Cards (6)

Section 1

(6 cards)

dalton

Front

1908 nucleus (1/1000) of an atom positively charged, electrons went around orbits cathode ray tube gold foil

Back

goldstein

Front

1885 positively charged

Back

Democritus

Front

400bc a-tomos=indivisible

Back

periodic table

Front

an arrangement of elements in which the elements are separated into groups based on a set of repeating properties

Back

Mendeleev `

Front

1869; noticed there was a connection between atomic mass and chemical properties; predicted elements not yet discovered and left space for them(period law & early periodic table)

Back

thomson

Front

1803 law of definite properties, all atoms of the same element are same, soils spheres, compounds Plum pudding

Back