
Isotopes and Average Atomic Mass
Authored by AMY STEWART
Chemistry
10th Grade
Used 1+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9% abundant. The other is 11.01 amu and is 80.1% abundant. What is the average atomic mass? What element is it?
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Compute the average atomic mass for silicon:
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A neutral atom of Carbon-13 has ________ electrons and _________ neutrons
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses.
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Do the following atoms belong to the same element? Explain
Aluminum-27
An atom with 14 protons and 13 neutrons
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the atomic number of Neon, Ne?
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A neutral atom of the isotope 2612Mg would consist of
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