
Calculating Atomic Mass and Isotopes
Interactive Video
•
Chemistry
•
6th - 10th Grade
•
Medium

Aiden Montgomery
Used 3+ times
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What particles are found in the nucleus of an atom?
Protons and electrons
Neutrons and electrons
Protons and neutrons
Electrons only
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass number of an isotope?
The number of protons
The number of neutrons
The number of electrons
The sum of protons and neutrons
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the atomic mass of an element on the Periodic Table not a whole number?
Because it includes the mass of electrons
Because it is an average of the masses of all isotopes
Because it is rounded to the nearest whole number
Because it includes the mass of protons only
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between a weighted average and a regular average?
A weighted average considers the relative abundance of each value
A regular average considers the relative abundance of each value
A weighted average is always higher than a regular average
A regular average is always higher than a weighted average
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which isotope of Boron is more common in nature?
Neither is common
Boron-10
Boron-11
Both are equally common
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the atomic mass of Boron-11?
10
11
10.5
10.8
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the natural abundance of Boron-10 in the given sample?
20%
30%
10%
40%
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