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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
If the half-life of an isotope is 4 days, how much of a 64g sample remains after 8 days?
π‘ Hint: Remember to halve the amount for each half-life.
Question 2
Easy
What does the term 'half-life' refer to?
π‘ Hint: Think about the definition and its application to decay.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the definition of half-life?
- The time for a radioactive nucleus to decay completely
- The time taken for half the number of radioactive nuclei to decay
- The time taken for a stable isotope to form
π‘ Hint: Focus on the term 'half' in half-life.
Question 2
True or False: The half-life is constant for a given isotope.
- True
- False
π‘ Hint: Remember the definition of half-life.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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.
π‘ Hint: Count how many 12-year intervals are in 48 years.
Question 2
How would you determine the age of a sample using its half-life? Explain the process.
π‘ Hint: Think about how carbon dating works.
Challenge and get performance evaluation