Unit 1 - Atomic Theory - Chemistry Final Exam Review

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•
Chemistry
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the most abundant isotope of Boron?
Back
Boron-11
2.
FLASHCARD QUESTION
Front
Why is the resulting atom a new element when two atoms undergo fusion?
Back
The new element has a different number of protons.
3.
FLASHCARD QUESTION
Front
How do you mathematically determine the average atomic mass of an element with multiple isotopes?
Back
Calculate the weighted average based on the abundance and mass of each isotope.
4.
FLASHCARD QUESTION
Front
Which isotope of Silicon has the greatest abundance if its average atomic mass is 28.1 amu?
Back
Silicon-28
5.
FLASHCARD QUESTION
Front
What is the average atomic mass of element X if given options are 28.08 amu, 32.43 amu, 29.00 amu, and 23.52 amu?
Back
28.08 amu
6.
FLASHCARD QUESTION
Front
Define isotope.
Back
Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.
7.
FLASHCARD QUESTION
Front
What is atomic mass unit (amu)?
Back
Atomic mass unit (amu) is a standard unit of mass that quantifies mass on an atomic or molecular scale.
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