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21 Cards in this Set
- Front
- Back
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Atom
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Smallest peace of matter that still retains the property of the element
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nucleus
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positivly charged center of the atom
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proton
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has an electrical charge of 1+
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Neutrons
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Neutral particles with no electrical charge
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Electrons
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are particles with an electrical charge of 1-
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Quarks
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Small particles that make up protons and neutrons
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Electron cloud
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area around the nucleus of an atom
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Atomic number
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is equal to the number of protons in an atom
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Mass number
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Sum of the number of protons & Neutrons in the nucleus of the atom
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Isotopes
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Atoms of the same element that have different number of neutrons
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Average atomic mass
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Wieghted average mass of the mixture of its isotopes
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Periodic table
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elements are aranged by increasing atomic number and by changes in physical and chemical property
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Groups
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families numbered 1-18
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Groups
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families numbered 1-18
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Electron dot diagram
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uses the symbol of the element and dots to represent the electrons in the outer energy level
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Quarks
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Small particles that make up protons and neutrons
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electron cloud
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area around the nucleus of an atom
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Average atomic mass
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Wieghted average mass of the mixture of its isotopes
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isotopes
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Atoms of the same element that have different number of neutrons
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Atomic number
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is equal to the number of protons in an atom
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Mass number
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Sum of the number of protons & Neutrons in the nucleus of the atom
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