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11th Grade Half Life Quizzes , Questions & Answers

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11th Grade

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This quiz features 20 questions on half-life reasoning problems, designed for students in Grade 11. You will explore concepts like radioactive decay, the calculation of remaining substance after a given time, and the significance...

Questions: 20 | Attempts: 22 | Last updated: Mar 9, 2026

Sample Question 1
If an isotope’s half-life is 6 hours, after 18 hours the remaining fraction is:

1/2

1/4

1/8

1/16

Sample Question 2
If 1/32 remains, 5 half-lives have passed.

True

False

Sample Question 3
Half-life = 10 years. Starting with 800 g, after 30 years you have:

400 g

200 g

100 g

50 g

11th Grade Half Life Quizzes , Questions & Answers

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