Flashcards
Atoms
Cards in this deck (7)
- 1What is an Atom?An Atom is the smallest particle created by nucleus and the electrons.
- 2Structure of AtomsAtoms are made from:
Electrons=negative
Neutrons= They are neutral
Protons=positive
Valence electrons= are the ones that are in the outer shell and they are negative - 3Jhon Dalton - 1893He stated that the atoms are compact and firm.
- 4Joseph Tompson - 1897He stated that the atoms was a protón sphere with a positive charge and that electrons embedded on it.
- 5Ernest Butherford - 1911He stated that electrons move in orbit.
- 6Niels Bohr - 1913He stated that each atom has nucleus and that the nucleus has a positive charge.
- 7Wener Heisemberg - 1927He stated that the mass is in the nucleus and that electrons form a shell in levels and sublevels.
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- Inglés Flashcards on Atoms , created by Juliana Montoya Castellanos on 22/04/2025.
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- Juliana Montoya Castellanos
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