
Understanding Isotopes and Relative Atomic Mass

Interactive Video
•
Chemistry, Science
•
8th - 12th Grade
•
Hard

Sophia Harris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What defines isotopes of a particular element?
Different numbers of neutrons
Different atomic numbers
Different numbers of protons
Different numbers of electrons
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example of chlorine isotopes, what is the mass number of chlorine-37?
17
35
20
37
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following elements was used as an example to explain isotopes in the video?
Oxygen
Chlorine
Iron
Carbon
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the natural abundance of an isotope represent?
The number of protons in the isotope
The percentage of that isotope among all isotopes of the element
The total mass of the isotope
The number of electrons in the isotope
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the relative atomic mass of an element calculated?
By adding the mass numbers of all isotopes
By multiplying the mass number of each isotope by its natural abundance and averaging
By averaging the mass numbers of isotopes
By dividing the total mass by the number of isotopes
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a step in calculating the relative atomic mass?
Multiplying each isotope's mass number by its natural abundance
Adding the products of all isotopes
Dividing by the total natural abundance
Subtracting the smallest mass number from the largest
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the symbol used to represent the average relative atomic mass?
A with a subscript r
R with a subscript m
M with a subscript a
N with a subscript a
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