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CHM 115 Final Exam Study Guide well answered to pass
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CHM 115 Final Exam Study Guide well answered to pass
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CHM 115 Final Exam Study Guide# of nucleons = - correct answer ✔✔# neutrons + # protons
Isotopes - correct answer ✔✔Different form of element with same number of protons but different
number of neutrons
Nucleons - correct answer ✔✔Protons and neutrons that make up the nucleus
Nuclide - correct answer ✔✔Nucleus with specific number of neutrons and protons
Decay - correct answer ✔✔Spontaneous disintegration with emission of radiation
Alpha decay - correct answer ✔✔
Beta decay - correct answer ✔✔
Positron emission - correct answer ✔✔
Electron capture - correct answer ✔✔
Gamma emission - correct answer ✔✔
Neutron emission - correct answer ✔✔
In nuclear reactions, atoms usually change/maintain their identity - correct answer ✔✔Change
Nuclear reactions involve mainly ___________ - correct answer ✔✔Protons and neutrons
, Nuclear reaction rates are affected/unaffected by changes in temperature - correct answer
✔✔Unaffected
Nuclear reactions sometimes involve large/small changes in energy - correct answer ✔✔Large
In nuclear reactions, huge changes in energy are accompanied by measurable changes in ___________ -
correct answer ✔✔Mass
If the neutron/proton ratio is too large - correct answer ✔✔Increase # of protons
Beta decay
If the proton/neutron ratio is too large - correct answer ✔✔Increase # of neutrons, or decrease # of
protons
Positron decay or electron capture
Above band of stability - correct answer ✔✔Alpha decay
Z of last stable element in band of stability - correct answer ✔✔Z = 83
Geiger counter - correct answer ✔✔Measures activity, disintegration over time; inert gas tube that
conducts electricity when a particle or photon of radiation temporarily makes the gas conductive by
ionizing it
Integrated rate equation - correct answer ✔✔ln(No/N) = kt
Find decay constant - correct answer ✔✔k = ln(2)/(half life)
Half life - correct answer ✔✔
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