Half-Lives
Authored by Kathryn Miller-Krivanek
Chemistry
11th Grade
NGSS covered
Used 16+ times
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10 questions
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1.
LABELLING QUESTION
1 min • 1 pt
Add the labels to the graph.
One label will not be used.
original amount
2nd half-life
x-axis
3rd half-life
first half-life
y-axis
Tags
NGSS.HS-PS1-8
2.
MATH RESPONSE QUESTION
1 min • 1 pt
What percent of Iodine-131 remains after 2 half-lives?
Mathematical Equivalence
OFF
Tags
NGSS.HS-PS1-8
3.
MATH RESPONSE QUESTION
1 min • 1 pt
In days, how long is the half-life of Iodine-131?
Mathematical Equivalence
ON
Tags
NGSS.HS-PS1-8
4.
MATH RESPONSE QUESTION
1 min • 1 pt
After four half-lives, how many days have passed?
Mathematical Equivalence
ON
Tags
NGSS.HS-PS1-8
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The y-axis of the graph measures "counts per second." What does this refer to?
How many atoms a person can count in a second
How much radiation is detected by a Geiger-Muller counter per second
How many atoms there are in a second
How many atoms there are in the sample
Tags
NGSS.HS-PS1-8
6.
MATH RESPONSE QUESTION
1 min • 1 pt
What was the starting "counts per second" of the sample?
Mathematical Equivalence
OFF
7.
MATH RESPONSE QUESTION
1 min • 1 pt
After the first half-life, how many counts per second are measured?
Mathematical Equivalence
OFF
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