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Structure of an Atom
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The Three subatomic particles of an atom: Proton Neutron Electron
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Structure of an Atom Nucleus: The positively charged center or core of the Atom. Contains MOST of the mass of the Atom.
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What’s inside the Nucleus: Protons - One of two subatomic particles of an atom found in the nucleus –Relative Mass = 1 –Electrical Charge = (+) Positive
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Neutrons - One of two subatomic particles of an atom found in the nucleus –Relative Mass = 1 –Electrical Charge = (0) Neutral What’s inside the Nucleus:
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Electron Cloud: A Region that surrounds the nucleus of an atom in which the electrons are free to move around.
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What’s found in the Electron Cloud: Electrons - Subatomic particles of an atom that are found moving around in the Electron Cloud. –Relative Mass = 0 –Electrical Charge = (-) Negative
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All atoms as a whole have a neutral Electrical Charge. How can this be? The # of Protons = the # Electrons.
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Model of an Atom + 0 - ProtonNucleusNeutron Electron Electron Cloud
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