

Understanding Isotopes and Atomic Weight
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Practice Problem
•
Hard
Evelyn Hayes
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What makes an element unique in terms of its atomic structure?
The number of neutrons
The number of protons
The number of electrons
The atomic mass
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the term for atoms of the same element with different mass numbers?
Ions
Isotopes
Compounds
Molecules
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the percent abundance of an isotope calculated?
By dividing the atomic weight by the mass number
By multiplying the atomic number by the mass number
By dividing the number of atoms of the isotope by the total number of atoms of all isotopes and multiplying by 100
By dividing the number of protons by the total number of atoms
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the atomic weight of an element?
The mass of the most abundant isotope
The average mass of all isotopes of the element
The number of protons in the nucleus
The sum of protons and neutrons
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the atomic weight of an element?
By adding the masses of all isotopes
By multiplying the mass number by the percent abundance
By calculating the weighted average of the masses of all isotopes
By averaging the atomic numbers of all isotopes
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