Atomic Notation

Flashcard
•
Chemistry
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an ion?
Back
An ion is an atom that has gained or lost electrons, resulting in a net electrical charge.
2.
FLASHCARD QUESTION
Front
What does the atomic number represent?
Back
The atomic number represents the number of protons in the nucleus of an atom.
3.
FLASHCARD QUESTION
Front
What is a neutron?
Back
A neutron is a subatomic particle found in the nucleus of an atom, with no electrical charge.
4.
FLASHCARD QUESTION
Front
What is an isotope?
Back
Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.
5.
FLASHCARD QUESTION
Front
How do you calculate the number of neutrons in an atom?
Back
Number of neutrons = Mass number - Atomic number.
6.
FLASHCARD QUESTION
Front
What is the mass number of an atom?
Back
The mass number is the total number of protons and neutrons in the nucleus of an atom.
7.
FLASHCARD QUESTION
Front
What is the significance of the number written in the top left corner of isotope notation?
Back
The number in the top left corner of isotope notation represents the mass number of the isotope.
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