Radioactive decay and half life
Cards (21)
- What are the two terms discussed in the video?
- What happens to unstable isotopes to become more stable?
- What do we call materials that emit radiation?
- Why can't we predict when a single radioactive isotope will decay?
- What can we determine from a large sample of radioactive isotopes?
- How is activity measured?
- What does one becquerel represent?
- If a sample has an activity of 600 becquerels, how many isotopes decay each second?
- What is half-life defined as?
- If a sample has 1 million unstable nuclei, how many will remain after one half-life?
- How does the decay process affect the number of unstable particles over time?
- What happens to the overall rate of decay as the number of unstable particles decreases?
- Why does the decay graph appear curved rather than a straight line?
- How do you calculate half-life from a decay graph?
- What is the half-life of the sample in the example given?
- What device is used to measure activity in real life?
- What does a Geiger-Muller tube record?
- If the half-life of a radioactive source is 40 hours, how many half-lives are in 120 hours?
- How many radioactive nuclei remain after three half-lives from 3 million?
- What are the key concepts of activity and half-life in radioactive decay?
- How do you determine the remaining radioactive nuclei after multiple half-lives?