What is an isotope?
Isotope

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Science
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8th - 9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons, resulting in a different atomic mass.
2.
FLASHCARD QUESTION
Front
How do you determine the number of neutrons in an isotope?
Back
To find the number of neutrons in an isotope, subtract the number of protons (atomic number) from the atomic mass (rounded to the nearest whole number).
3.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.
4.
FLASHCARD QUESTION
Front
What is the significance of the atomic mass of an isotope?
Back
The atomic mass of an isotope reflects the total number of protons and neutrons in its nucleus, influencing its stability and behavior in chemical reactions.
5.
FLASHCARD QUESTION
Front
How many protons does the isotope Carbon-14 have?
Back
Carbon-14 has 6 protons.
6.
FLASHCARD QUESTION
Front
If an isotope has an atomic mass of 27 and 13 protons, how many neutrons does it have?
Back
It has 14 neutrons (27 - 13 = 14).
7.
FLASHCARD QUESTION
Front
What is the symbol for an isotope with 12 protons and 13 neutrons?
Back
The symbol is ²⁵Mg (Magnesium-25).
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