Isotopes and Calculating Atomic Mass

Flashcard
•
Chemistry
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an isotope?
Back
Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.
2.
FLASHCARD QUESTION
Front
How do you calculate the atomic mass of an element?
Back
The atomic mass is calculated by taking the weighted average of the masses of all the isotopes of an element based on their natural abundance.
3.
FLASHCARD QUESTION
Front
What does the atomic number represent?
Back
The atomic number represents the number of protons in the nucleus of an atom.
4.
FLASHCARD QUESTION
Front
What is the mass number of an isotope?
Back
The mass number is the total number of protons and neutrons in the nucleus of an atom.
5.
FLASHCARD QUESTION
Front
If an isotope has 22 protons and 26 neutrons, what is its mass number?
Back
The mass number is 48 (22 protons + 26 neutrons).
6.
FLASHCARD QUESTION
Front
What is the relationship between isotopes and atomic mass?
Back
Isotopes of an element have different atomic masses due to differing numbers of neutrons.
7.
FLASHCARD QUESTION
Front
How many neutrons does Li-6 have?
Back
Li-6 has 3 neutrons (6 mass number - 3 protons = 3 neutrons).
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