Atomic Structures
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| Atom | smallest part of matter properties of an element
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| Element | A substance one of a kind of atom-can not be broken down to similar ordinary means
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| Nucleus | center of an atom which protons and neutrons-has a positive charge
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| Protons | positive found in the nucleus of an atom
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| Neutron | No change found in the nucleus of an atom
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| A shell | space outside nucleus electrons orbit
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| Electron | negative particle atom that orbits the nucleus.
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| Atomic # | The number of protons(electrons) in and atom- it is used to identify an element.
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| Atomic Mass | The mass of the nucleus- it is the number of protons plus the number of neutrons.
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