12.6 - Half-Life
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Practice Questions
Test your understanding with targeted questions
If the half-life of an isotope is 4 days, how much of a 64g sample remains after 8 days?
💡 Hint: Remember to halve the amount for each half-life.
What does the term 'half-life' refer to?
💡 Hint: Think about the definition and its application to decay.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the definition of half-life?
💡 Hint: Focus on the term 'half' in half-life.
True or False: The half-life is constant for a given isotope.
💡 Hint: Remember the definition of half-life.
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Challenge Problems
Push your limits with advanced challenges
A radioactive substance has a half-life of 12 years. If a sample initially has 1600 grams, calculate the amount left after 48 years. Show your work.
💡 Hint: Count how many 12-year intervals are in 48 years.
How would you determine the age of a sample using its half-life? Explain the process.
💡 Hint: Think about how carbon dating works.
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