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Physical Science Review 4.5
Test Description: Radioactive Decay
Instructions: Answer all questions to get your test result.
1) What is radioactive decay?
A
when the atomic nuclei of unstable isotopes release fast moving particles
B
all of the choices
C
when the atomic nuclei of unstable isotopes break apart
D
when the atomic nuclei of unstable isotopes release energy
2) What elements did Marie Curie discover undergoing radioactive decay?
A
all of the choices
B
radium
C
uranium
D
polonium
3) 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: 224, atomic number: 90
C
mass number: 222, atomic number: 88
D
mass number: 222, atomic number: 89
4) Radium 222, atomic number 88 undergoes beta decay. What is the new mass number and atomic number?
A
mass number: 222, atomic number: 88
B
mass number: 224, atomic number: 90
C
mass number: 220, atomic number: 86
D
mass number: 222, atomic number: 89
5) Radium 222, atomic number 88 releases gamma radiation. What is the new mass number and atomic number?
A
mass number: 222, atomic number: 89
B
mass number: 222, atomic number: 88
C
mass number: 224, atomic number: 90
D
mass number: 220, atomic number: 86
6) Which type of decay causes the most damage?
A
gamma radiation
B
alpha decay
C
beta decay
D
all of the choices
7) ___________ are radioactive ________________ that can be followed
A
isotopes; ions
B
tracers; isotopes
C
tracers; ions
D
none of the choices
8) tracers are used
A
all of the choices
B
in medicine
C
to follow chemical reactions
D
in industry
9) Polonium 208, atomic number 84 undergoes alpha decay. What is the new mass number and atomic number?
A
mass number: 208, atomic number: 84
B
mass number: 208, atomic number: 83
C
mass number: 210, atomic number: 86
D
mass number: 206, atomic number: 82
10) 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
*select an answer for all questions
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