What are isotopes?
Matter Review

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.
2.
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.
3.
FLASHCARD QUESTION
Front
What is the mass number of an atom?
Back
The mass number is the total number of protons and neutrons in an atom's nucleus.
4.
FLASHCARD QUESTION
Front
How do you determine the number of neutrons in an atom?
Back
To find the number of neutrons, subtract the atomic number from the mass number.
5.
FLASHCARD QUESTION
Front
What is the atomic symbol for Beryllium?
Back
The atomic symbol for Beryllium is Be.
6.
FLASHCARD QUESTION
Front
How many protons are in a neutral atom of Beryllium?
Back
A neutral atom of Beryllium has 4 protons.
7.
FLASHCARD QUESTION
Front
How many electrons are in a neutral atom of Beryllium?
Back
A neutral atom of Beryllium has 4 electrons.
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