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Josué Reyes Español 5 fichas

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1AtomsWhat is a atom?
atoms as a source of nuclear energy.
2John Dalton All elements are made of identical atoms.Dmitri Ivanovich Mendeleev
Arranged elements by atomic mass.
3Joseph John Thomson Discovered the electron.Ernest Rutherford
Discovered the atomic nucleus.
4Niels Henrik David Bohr Electrons orbit the nucleus in fixed energy levels.Werner Karl Heisenberg
Helped develop the quantum model, where electrons exist in probability clouds.
5Parts of a atom Electrón: - Protom: + Neutro: no have a symbolThanks You