What is the atomic number?
Periodic Table Flashcard #1

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•
Chemistry
•
6th 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 element's identity.
2.
FLASHCARD QUESTION
Front
What is the atomic number for Lithium?
Back
3
3.
FLASHCARD QUESTION
Front
How many electrons does a neutral atom of Hydrogen have?
Back
1
4.
FLASHCARD QUESTION
Front
What is the atomic mass?
Back
The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).
5.
FLASHCARD QUESTION
Front
What is the atomic mass for Argon?
Back
40
6.
FLASHCARD QUESTION
Front
How many electrons are in an atom of Silicon (Si)?
Back
14
7.
FLASHCARD QUESTION
Front
What is the relationship between protons and electrons in a neutral atom?
Back
In a neutral atom, the number of protons equals the number of electrons.
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