Structure of an Atom. The Three subatomic particles of an atom: Proton Neutron Electron.

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Presentation transcript:

Structure of an Atom

The Three subatomic particles of an atom: Proton Neutron Electron

Structure of an Atom Nucleus: The positively charged center or core of the Atom. Contains MOST of the mass of the Atom.

What’s inside the Nucleus: Protons - One of two subatomic particles of an atom found in the nucleus –Relative Mass = 1 –Electrical Charge = (+) Positive

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:

Electron Cloud: A Region that surrounds the nucleus of an atom in which the electrons are free to move around.

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

All atoms as a whole have a neutral Electrical Charge. How can this be? The # of Protons = the # Electrons.

Model of an Atom ProtonNucleusNeutron Electron Electron Cloud