Atomic Number and Atomic Mass

Flashcard
•
Science
•
7th Grade
•
Hard
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15 questions
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1.
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.
2.
FLASHCARD QUESTION
Front
What is atomic mass?
Back
Atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).
Tags
NGSS.HS-PS1-7
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 the nucleus of an atom.
4.
FLASHCARD QUESTION
Front
Which particle has a positive charge?
Back
Proton.
5.
FLASHCARD QUESTION
Front
Which particle has a negative charge?
Back
Electron.
6.
FLASHCARD QUESTION
Front
Which particle has no charge?
Back
Neutron.
7.
FLASHCARD QUESTION
Front
How do you calculate the mass number?
Back
Mass number = Number of protons + Number of neutrons.
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