Nuclear Chemistry: Radioactive Decay and Half-Life
Authored by James Estes
Science
4th Grade
NGSS covered
Used 6+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
The time taken for half of an amount of radioactive atoms to decay.
Tags
NGSS.HS-PS1-8
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Q1. How much would a 40 gram sample of sodium-24 be left after decaying 45 hours if the half-life of sodium is 15 hours?
2.5 grams
3 grams
6.7 grams
5 grams
Tags
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Q3: If the patient is given a 4.0 gram sample of I-131 during therapy, how much I-131 remains in his body after 48.6 days, given the half-life of I-131 is 8.1 days?
0.03125 grams
0.0625 grams
1.0 gram
128.0 grams
Tags
NGSS.HS-PS1-8
4.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
After decaying for 60 hours, 1/16 of the original mass of a radioisotope sample remains unchanged. What is the half-life of this radioisotope?
3.0 h
9.6 h
12 h
15 h
Tags
NGSS.HS-PS1-8
5.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
In order of most to least penetrating radiation we have
Alpha , Beta, Gamma
Beta , Gamma , Alpha
Gamma, Beta, Alpha
Gamma, Alpha, Beta
6.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Which type of nuclear radiation is being emitted here?
Positron
beta
Tags
NGSS.HS-PS1-8
7.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
The technetium-99 isotope has a half-life of 6.0 hours. If 200.0 mg were injected into a patient how much remains after 18 hours?
25.0 mg
30.0 mg
33 mg
35.2 mg
Tags
NGSS.HS-PS1-8
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