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15 cards from this deck
Unstable nuclei giving out radiation to become more stable
Random - can't predict when a single nucleus will decay
How many unstable nuclei break down each second
Becquerels (Bq)
1 nucleus decaying per second
Directly proportional
Gets weaker over time
Unstable nuclei decay into stable ones, fewer left to decay
Goes down by 4
Goes down by 2
No change - stays the same
Goes up by 1
No change to mass or charge
Alpha (α\alphaα), beta (β\betaβ), and gamma (γ\gammaγ) rays
Number of radiation particles detected in a time period
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