NEW
Font size
WorksheetsREVIEW: Half Life Mini Quiz Practice
Total questions: 11
Worksheet time: 1hrs 10mins
You have 100 grams of radioactive C-14. The half life of C-14 is 5730 years.
How many grams are left after 1 half life?
100 grams
25 grams
2 grams
50 grams
After the third half-life, how much of the sample is left?
1/2
1/3
1/16
1/8
If the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?
1 half-life
2 half-lives
3 half-lives
4 half-lives
What is the half-life of an isotope if after 20.0 days you have 4.0 grams remaining of a 64.0 grams sample?
1.25 days
5.0 days
80 days
4.25 days
What is the only difference between two different isotopes of the same element?
Number of neutrons
Number of protons
Number of electrons
Size of atom
What is the Half life of this isotope?
5 seconds
10 seconds
15 seconds
20 seconds
After 22,800 years, approximately what percentage of the original carbon-14 remains?
15%
12.5%
6.25%
3.125%
