Half life Flashcards
1
Q
What is half life
A
The average time it takes for the number of nuclei in a radioactive isotope sample to halve .
2
Q
What does a short life mean
A
The activity falls quicker - lots of nuclei decay quickly
3
Q
What does a long half life mean
A
Activity dalls more slowly most of nuclei don’t delay for a long time
4
Q
What happens to radioactivity over time
A
It becomes less radioactive as it decays
