Periodic Table & Elements Flashcard

Flashcard
•
Science
•
7th Grade
•
Hard
Standards-aligned
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What are valence electrons?
Back
The electrons in the outermost shell of an atom that are involved in forming bonds.
Tags
NGSS.MS-PS1-1
2.
FLASHCARD QUESTION
Front
How do you find the number of neutrons in an atom?
Back
Subtract the atomic number from the atomic mass.
3.
FLASHCARD QUESTION
Front
True or False: Most of the elements on the periodic table are classified as metals.
Back
True
4.
FLASHCARD QUESTION
Front
What does the number 1.00794 represent in the periodic table?
Back
Atomic mass of Hydrogen.
5.
FLASHCARD QUESTION
Front
In which group is Sodium (Na) found?
Back
Group 1.
6.
FLASHCARD QUESTION
Front
What is the atomic number?
Back
The number of protons in the nucleus of an atom.
7.
FLASHCARD QUESTION
Front
Define atomic mass.
Back
The weighted average mass of an element's isotopes, measured in atomic mass units (amu).
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