Physical Science Review 4.5: Question Preview (ID: 14758)


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What is radioactive decay?
a) when the atomic nuclei of unstable isotopes break apart b) when the atomic nuclei of unstable isotopes release fast moving particles c) when the atomic nuclei of unstable isotopes release energy d) all of the choices
What elements did Marie Curie discover undergoing radioactive decay?
a) uranium b) polonium c) radium d) all of the choices
Radium 222, atomic number 88 undergoes alpha decay. What is the new mass number and atomic number?
a) mass number: 220, atomic number: 86 b) mass number: 222, atomic number: 89 c) mass number: 224, atomic number: 90 d) mass number: 222, atomic number: 88
Radium 222, atomic number 88 undergoes beta decay. What is the new mass number and atomic number?
a) mass number: 220, atomic number: 86 b) mass number: 222, atomic number: 89 c) mass number: 224, atomic number: 90 d) mass number: 222, atomic number: 88
Radium 222, atomic number 88 releases gamma radiation. What is the new mass number and atomic number?
a) mass number: 220, atomic number: 86 b) mass number: 222, atomic number: 89 c) mass number: 224, atomic number: 90 d) mass number: 222, atomic number: 88
Which type of decay causes the most damage?
a) gamma radiation b) alpha decay c) beta decay d) all of the choices
___________ are radioactive ________________ that can be followed
a) tracers; isotopes b) tracers; ions c) isotopes; ions d) none of the choices
tracers are used
a) in medicine b) in industry c) to follow chemical reactions d) all of the choices
Polonium 208, atomic number 84 undergoes alpha decay. What is the new mass number and atomic number?
a) mass number: 206, atomic number: 82 b) mass number: 208, atomic number: 83 c) mass number: 210, atomic number: 86 d) mass number: 208, atomic number: 84
Polonium 208, atomic number 84 undergoes beta decay. What is the new mass number and atomic number?
a) mass number: 206, atomic number: 82 b) mass number: 208, atomic number: 83 c) mass number: 210, atomic number: 86 d) mass number: 208, atomic number: 84
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