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12 Cards in this Set
- Front
- Back
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what is RADIOACTIVITY?
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emitting radiation when certain nuclei spontaneously change into different nuclei
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what terms are used to describe nuclei change when becoming radioactive?
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radioactive DECAY OR DISINTEGRATION
ALPHA, BETA PARTICLE AND GAMMA RAY |
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what is a NUCLEON
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collective term for atom's nuclear structure. contains protons and neutrons
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the elemental notation "A" represents...
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mass number, protons and neutrons
upper left |
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elemental notation "Z" represents...
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atomic number, protons in nucleus, lower left
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elemental notation "N" represents...
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number of neutrons
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define electrically neutral atom
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extranuclear E = protons on nucleus
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what is an ISOTOPE
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SPECIES OF SAME ELEMENT HAVING SAME PROTONS AND NEUTRONS
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define ISOBARS
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ELEMENT SPECIES WITH SAME MASS BUT DIFFERENT ATOMIC NUMBER
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define ISOTONE
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species with same # of neutrons
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define ISOMERS
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species with SAME MASS AND ATOMIC NUMBER
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characteristics of RADIONUCLIDES
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have unstable n/p ratio, tries to gain stability thru nuclear transformation leading to different species: radioactive decay
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