Radioactive Decay
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Objective
I can calculate the half-life of a radioactive substance using its decay rate.
Part 1 of 3
Warm-up video
Unknown Channel · 5:00
We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
9 questions
Define the term "half-life" in the context of radioactive decay.
If a radioactive substance has a half-life of 10 hours, how many radioactive nuclei will remain after 30 hours if you start with 1 million nuclei? Show your calculations.
Part 3 of 3
Exit ticket
Quick comprehension check
“A radioactive isotope has a half-life of 6 hours. If you start with 5 million radioactive nuclei, how many nuclei will remain after 18 hours? Show your calculations. A radioactive substance has a half-life of 2 days. If you begin with 800,000 radioactive nuclei, how many nuclei will remain after 8 days? Show your calculations. ”
Sample answer included in the free materials
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