Flashcards in Half-life Deck (7):
What is the unit for measuring radioactivity?, what does it mean?
1 Bq means one nucleus decaying per second
The radioactivity of a sample always [ ] over time
The [ ] a sample becomes, the less radiation it will emit
What is a half-life?
A HALF-LIFE is the AVERAGE time it takes for the NUMBER of NUCLEI in a radioactive isotope sample to HALVE
A short half life means the activity falls [ ]
A half life is always the same period of time for a sample!
Did you know that?!!