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Oak National Academy
12 questions
Which of the following describe what a radioactive isotope is?
What happens to a nucleus when it undergoes radioactive decay?
Radioactive decay is the process where …
Which of the following methods can an unstable nucleus use to decay?
Which of the following are random events?
The decay of a radioactive isotope is a random process. This means that we cannot predict …
Which of the following definitions describing the half–life of a radioactive isotope is correct?
Which of the following factors affects the half–life of a radioactive substance?
Which of the following statements about the half–life of radioactive isotopes are correct?
Starting with the shortest, sort the following radioactive isotopes into order of increasing half-life.
Two radioactive isotopes of uranium are uranium–235 (U–235) and uranium–238 (U–238). Which of the following statements about their half–lives is correct?
A radioactive isotope has a half–life of 5 minutes. Match each of the following amounts of the sample remaining to the correct amount of time that has passed.
