Radioactive Decay
Grade 1145 min
Learning Objective
I can calculate the half-life of a radioactive substance using its decay rate.
Lesson Flow
Watch Video
GCSE Physics - Radioactive Decay and Half Life #35
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Practice
9 questions • Short answer
Exit Ticket
“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. ”
Teacher Guide
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