Science Atom Structure and PT Quiz
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11 Terms
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atom
The building block of matter.
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proton
A particle with a positive charge
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neutron
A particle with a neutral charge
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electron
A particle with an negative charge
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element
A specific type of atom
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ion
An atom that has an electric charge
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Periodic Table
All of the elements organized by their atomic number
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atomic number
The number of protons in an element
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atomic mass
The number of protons and neutrons in an atom
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valence electrons
The number of electrons on the outermost shell of an atom
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isotope
Different forms of an element that vary in neutron number.
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