What is the primary purpose of understanding half-lives in radioactive elements?

Half-Life Calculations and Concepts

Interactive Video
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Physics, Chemistry, Science
•
9th - 10th Grade
•
Hard

Patricia Brown
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To stop the decay process
To measure the speed of decay
To create new elements
To increase the decay rate
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a half-life denoted in scientific terms?
T full
T one half
T zero
T double
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the cesium-137 problem, what is the initial mass of the sample?
0.25 kilograms
2.00 kilograms
1.00 kilograms
0.5 kilograms
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many half-lives does cesium-137 undergo in 151 years?
Six
Three
Four
Five
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final mass of the sample in the cesium-137 problem after 151 years?
0.03125 kilograms
0.0625 kilograms
0.125 kilograms
0.25 kilograms
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the half-life of carbon-14 as mentioned in the practice problem?
57300 years
573000 years
573 years
5730 years
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many times do you need to divide 24 grams by 2 to reach 1.5 grams in the carbon-14 problem?
Three times
Two times
Four times
Five times
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