What is atomic mass?

Calculating Atomic Mass and Isotopes

Interactive Video
•

Ethan Morris
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Chemistry
•
6th - 10th Grade
•
4 plays
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Easy
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The number of neutrons in an element
The number of protons in an element
The number of electrons in an element
An average of the masses of different atoms
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a weighted average?
An average that considers the frequency of each value
An average that is always in the middle of the values
An average that only considers the highest value
An average that ignores the frequency of each value
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the analogy, what feature distinguishes the Lemona GX from the Lemona GXL?
Color and luxury features
Engine size
Fuel efficiency
Number of doors
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the regular average weight of the Lemona GX and GXL?
Subtract the weights and divide by the number of models
Multiply the weights and divide by the number of models
Add the weights and divide by the number of models
Add the weights and multiply by the number of models
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of Lemonas are GX models?
95%
50%
5%
100%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the weighted average weight of the Lemona cars?
4,000 pounds
4,500 pounds
4,050 pounds
5,000 pounds
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are isotopes?
Atoms with the same number of neutrons but different numbers of protons
Atoms with different numbers of protons and neutrons
Atoms with different numbers of electrons
Atoms with the same number of protons but different numbers of neutrons
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass of Copper 63?
62.93 amu
64 amu
63 amu
65 amu
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the percent abundance of Copper 63?
50%
69%
100%
31%
10.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the calculated atomic mass of Copper using weighted averages?
62.93 amu
63.62 amu
64 amu
65 amu
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