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Glenco Science 25

Glenco Physical Science 9th grade chapter 25 nuclear energy

QuestionAnswer
holds the nucleus together strong force
atoms of the same element with different numbers of neutrons isotopes
Emission of particles from an unstable nuclei radioactivity
charge of a proton positive
charge of a electron negative
charge of a neutron uncharged
subatomic particle that orbits nucleus electron
subatomic charged particle found in nucleus proton
location of neutron nucleus
all atoms of the same element have the same number of this particle: proton
Largest radioactive particle made of 2 protons and 2 neutrons Alpha
Radioactive particle consisting of 1 electron Beta
Radiactive wave Gamma
Radioactive isotope of Carbon Carbon - 14
NON-radioactive isotope of Carbon Carbon -12
The half-life (in years) of Carbon-14. 5730
the number of years it takes half of the radioactive isotope to decay to the non-radioactive one half-life
If a rock has ½ of the Carbon-14 of new rock (in other words, half of its Carbon-14 has decayed to Carbon-12), how old is it? 5730
If a rock had ¼ of the Carbon-14 of new rock (in other words, 3/4 of its Carbon-14 has decayed to Carbon-12), how old is it 11460
Involves the splitting of nuclei, often in a chain reactions fission
Involves the fusion of small nuclei, like He, to produce energy fusion
The sun uses: fusion
Nuclear power plants use: fission
Created by: mrsmassie
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