Half Life Problems
Quiz
•
Science
•
10th Grade
•
Practice Problem
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Base your answer on on the graph below. The graph represents the decay of radioactive material X into a stable decay product.
Each of the objects below has different amounts remaining of the original radioactive material X. Which object is most likely the youngest?
Tags
NGSS.HS-PS1-8
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the mass of an original 5.60-gram sample of iron-53 that remains unchanged after 25.53 minutes?
0.35 g
0.70 g
1.40 g
2.80 g
Tags
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What fraction of a Sr-90 sample remains unchanged after 87.3 years?
1/2
1/3
1/4
1/8
Tags
NGSS.HS-PS1-8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which radioisotopes have the same decay mode and have half-lives greater than 1 hour?
Au-198 and N-16
Ca-37 and Fe-53
I-131 and P-32
Tc-99 and U-233
Tags
NGSS.HS-PS1-8
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the total number of years that must pass before only 25.00 grams of an original 100.0-gram sample of C-14 remains unchanged?
2865 y
5730 y
11,460 y
17,190 y
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which nuclide has a half-life that is less than one minute?
cesium-137
francium-220
phosphorus-32
strontium-90
Tags
NGSS.HS-PS1-8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An original sample of the radioisotope fluorine-21 had a mass of 80.0 milligrams. Only 20.0 milligrams of this original sample remain unchanged after 8.32 seconds. What is the half-life of fluorine-21?
1.04s
2.08s
4.16s
8.3s
Tags
NGSS.HS-PS1-8
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