What is the atomic number of an element?
Atomic Structure NS - updated with paper flashcard

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•
Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The atomic number is the number of protons in the nucleus of an atom, which determines the identity of the element.
2.
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.
3.
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 (number of protons) from the mass number.
4.
FLASHCARD QUESTION
Front
What is an isotope?
Back
Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.
5.
FLASHCARD QUESTION
Front
What role do neutrons play in the nucleus of an atom?
Back
Neutrons help to stabilize the nucleus by offsetting the repulsive forces between positively charged protons.
6.
FLASHCARD QUESTION
Front
What is the charge of a proton?
Back
A proton has a positive charge.
7.
FLASHCARD QUESTION
Front
What is the charge of a neutron?
Back
A neutron has no charge; it is neutral.
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