Half life practice problems
Flashcard
•
Chemistry, Physics
•
KG - University
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Half-life?
Back
The amount of time it takes for half the nuclei in a sample of the isotope to decay.
2.
FLASHCARD QUESTION
Front
What type of radiation is emitted if the radiation detected from a piece of rock is reduced significantly when wrapped in foil?
Back
Beta.
3.
FLASHCARD QUESTION
Front
If the half-life of strontium-90 is 25 years, how much will remain after 100 years if the initial amount is 4.0 g?
Back
0.25g.
4.
FLASHCARD QUESTION
Front
What is it called when scientists split the nuclei of atoms with neutrons?
Back
Nuclear fission.
5.
FLASHCARD QUESTION
Front
What is a Nuclear chain reaction?
Back
A process where the products of one reaction cause further reactions.
6.
FLASHCARD QUESTION
Front
What is the half-life of an isotope?
Back
The time required for half of the radioactive nuclei in a sample to decay.
7.
FLASHCARD QUESTION
Front
What happens to the amount of a radioactive substance over time?
Back
It decreases as it decays.
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