
Isotope Abundance and Average Atomic Mass in Elements
Interactive Video
•
Chemistry, Science, Physics
•
9th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does relative abundance refer to in the context of isotopes?
The total number of isotopes in an element
The percentage of each isotope in a sample
The mass of an isotope
The color of isotopes in a sample
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the analogy using colored dots, what does a 50-50 distribution of red and yellow dots represent?
No isotopes present
More red isotopes
Equal abundance of isotopes
More yellow isotopes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the masses of chlorine-35 and chlorine-37 isotopes?
35 amu and 36 amu
37 amu and 39 amu
35 amu and 37 amu
34 amu and 36 amu
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relative abundance of chlorine-35?
50%
25%
75%
100%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the average atomic mass of an element with two isotopes?
Add the masses of the isotopes
Subtract the mass of one isotope from the other
Multiply the mass of each isotope by its relative abundance and sum the results
Divide the mass of each isotope by its relative abundance
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the average atomic mass of chlorine when chlorine-35 and chlorine-37 are mixed?
34.5 amu
37.5 amu
35.5 amu
36.5 amu
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which uranium isotope is more common based on its average atomic mass of 238.03?
Uranium-235
Uranium-238
Both are equally common
Neither is common
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