Radioactive half-life
Quiz by Oak National Academy: GCSE Combined Science Edexcel Higher
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6 questions
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- Q1Which of the following definitions describing the half–life of a radioactive isotope is correct?The time it takes for half of all the nuclei to decay.Half the time it takes for the number of nuclei to fall to zero.Half the time it takes for one nucleus to decay.30s
- Q2Which of the following factors affects the half–life of a radioactive substance?the pressure of the environmentthe chemical form of the substancethe type of radioactive isotopethe temperature of the environment30s
- Q3Which of the following statements about the half–life of radioactive isotopes are correct?Users sort answers between categoriesSorting30s
- Q4Starting with the shortest, sort the following radioactive isotopes into order of increasing half-life.Users link answersLinking30s
- Q5Two 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?U–238 and U–235 have different half–lives because they are different isotopes.U–238 has a much shorter half–life than U–235.The half–life of each depends on chemical properties, not nuclear properties.U–238 and U–235 have the same half–life.30s
- Q6A 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.Users link answersLinking30s