Atoms
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| The Smallest unit of an element that maintains the properties of that element. | Atom
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| A Subatomic particle that has a negative charge. | Electron
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| In Physical science an atom's central region made up of protons and neutrons. | Nucleus
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| A region around the nucleus of an atom where electrons are found. | Electron Cloud
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| A Subatomic particle that has a positive charge and found in the nucleus. | Proton
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| A unit of mass that describes the mass of an atom or molecule. | Atomic Mass Unit
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| A subatomic particle with no charge, found in the nucleus. | Neutron
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| The number of protons in the nucleus of an atom. | Atomic Number
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| An atom that has the same number of protons as other atoms of a element. | Isotope
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| The sum of the numbers of protons and neutrons in the nucleus of an atom. | Mass Number
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| The mass of an atom expressed in atomic mass units. | Atomic mass
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Or sort by any of the columns using the down arrow next to any column heading.
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