Worksheetsradioactivity and half-life
Total questions: 14
Worksheet time: 1hrs 11mins
The time it takes for a radioactivity level to drop by a half is is the sample's ___________________.
quarter life
whole life
wonderful life
half life
If the half life of a radioactive element is 100yrs, how long would it take for the radioactivity to reduce by one half?
200yrs
100yrs
50yrs
300yrs
A certain radioactive sample has a half life of 2 years. After 6 years, how much of the sample is left?
1/2
1/3
1/16
1/8
The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams would be left after 2.4 minutes has elapsed?
100.0g
50.0g
12.5g
8.5g
If 10 mg of iodine 131 is given to a patient, how much is left after 8 days? The half-life of iodine-131 is 8 days.
5.0mg
1.25g
10g
10mg
The % of the parent isotope remaining after 3 Half Lives.
50%
25%
12.5%
6.25%
The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams would be left after 4.8 minutes has elapsed?
100.0g
25.0g
12.5g
8.5g
The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams would be left after 7.2 minutes has elapsed?
100.0g
25.0g
12.5g
8.5g
A certain radioactive sample has a half life of 2 years. After 6 years, how much of the sample is left?
1/2
1/3
1/16
1/8
