Calculating Half-life
Authored by Kristi Goodwin
Chemistry, Physics, Science
8th - 12th Grade
NGSS covered
Used 20+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
You have 100 grams of radioactive C-14. The half life of C-14 is 5730 years.
How many grams are left after 1 half life?
Tags
CCSS.HSF.LE.A.4
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
After the third half-life, how much of the sample is left?
Tags
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of iodine-131 is 8 days.
Tags
CCSS.HSF.LE.A.4
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
Tags
CCSS.HSF.LE.A.4
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
If the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?
Tags
CCSS.HSF.LE.A.4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
After 22,800 years, approximately what percentage of the original carbon-14 remains?
15%
12.5%
6.25%
3.125%
Tags
NGSS.HS-PS1-8
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the half-life of iodine-131?
Tags
NGSS.HS-PS1-8
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