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18 Cards in this Set
- Front
- Back
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the charge of a neutron
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neutral
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nuclear reactions
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reactions which involve a change in the atom's nucleus
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atomic mass unit
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one-twelfth the mass of a carbon-12 atom
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mass number
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the total number of protons and neutrons in an atom
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the charge of a proton
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positive
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alpha particle
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radioactive particle containing two neutrons and two protons
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the number of electrons found in a neutral atom of Neon
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ten
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atomic number
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number of protons in an atom
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atomic mass
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the weighted average mass of all the isotopes of an element
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nucleon
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protons and neutrons in a nucleus are referred to as this
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the number of neutrons in an atom of phosphorus with a mass number of 31
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sixteen
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radiation
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rays and particles spontaneously emitted from radioactive material
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the charge of an electron
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negative
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beta particle
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radioactive particle consisting of a fast moving electron
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gamma ray
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high energy radiation with no mass
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nucleus
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the location inside an atom where the majority of the mass is found
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symbol
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H, He, and Ar are examples of these
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isotope
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atoms that have the same number of protons, but different numbers if neutrons
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