Radioactive Decay & Half-life Test
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What type of radiation has the highest penetrating power and can penetrate the human body?
Back
Gamma radiation.
2.
FLASHCARD QUESTION
Front
What is the product of the alpha decay of 209At? Solve the equation: 8_5^209At = ___ + 2_4^He
Back
83_205Bi.
3.
FLASHCARD QUESTION
Front
If element 28X^58 undergoes alpha decay, what is the resulting element Y?
Back
26Y^54.
4.
FLASHCARD QUESTION
Front
How much of a 10 mg sample of iodine-131 remains after 24 days if its half-life is 8 days?
Back
1.25 mg.
5.
FLASHCARD QUESTION
Front
How long does it take for 180 grams of gold-198 to decay to 11.25 grams if its half-life is 2.68 days?
Back
10.72 days.
6.
FLASHCARD QUESTION
Front
Define radioactive decay.
Back
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation.
7.
FLASHCARD QUESTION
Front
What is half-life in the context of radioactive decay?
Back
Half-life is the time required for half of the radioactive atoms in a sample to decay.
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