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12 cards from this deck
Time for half the unstable atoms in a radioactive sample to decay
How many atoms are decaying each second
Becquerels (Bq)
No, but we can predict the overall pattern for many atoms
50%
25%
12.5%
Exponential decay curve
Activity (in Bq)
Time
Fewer atoms left to decay
No, each isotope has its own unique half-life
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