Half Life Calculations Practice

Quiz
•
Science
•
10th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An Isotope of Cesium-137 has a half life of 30 years. If 1.0 g of Cesium-137 disintegrates over a period of 90 years, how many grams of Cesium-137 would remain?
.125 grams
.5 grams
15 grams
45 grams
Tags
NGSS.HS-PS1-8
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Selenium-83 has a half life of 25 minutes. How many minutes would it take for a 20 milligram sample to decay and only have 1.25 milligrams of it remaining?
25 minutes
50 minutes
75 minutes
100 minutes
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Actinium-226 has a half life of 29 hours. If 100 milligrams of Actinium disintegrate over a period of 58 hours, how many milligrams of Actinium will remain?
100 mg
50 mg
25 mg
58 mg
Tags
NGSS.HS-PS1-8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the half life of Polonium-218 if 0.0625 grams remains of a 2.00 gram original sample after 15 minutes?
5 minutes
3 minutes
15 minutes
7.5 min
Tags
NGSS.HS-PS1-8
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What percent of carbon-14 would be left after 11,460 years?
100%
75%
50%
25%
Tags
NGSS.HS-PS1-8
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When an isotope goes through 4 half-lives, _____ _________________ remains
1/4 or 25%
1/8 or 12.5%
1/16 or 6.25%
Tags
NGSS.HS-PS1-8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many grams will remain after 100 g of cobalt-60 has gone through 3 half-lives?
50 g
25 g
12.5 g
6.25 g
Tags
NGSS.HS-PS1-8
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