Atoms
Flashcard
•
Science
•
9th - 11th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the half-life of iodine-131? Options: 32 days, 8 days, 16 days, 24 days
Back
8 days
2.
FLASHCARD QUESTION
Front
Which subatomic particle has a negative charge?
Back
electron
3.
FLASHCARD QUESTION
Front
The atomic mass on the periodic table is an average of all the ____ of an element based on abundance.
Back
isotopes
4.
FLASHCARD QUESTION
Front
An electron has a negative charge and a mass of ___ amu.
Back
0
5.
FLASHCARD QUESTION
Front
How can the number of protons in an element be found?
Back
Looking up the atomic number
6.
FLASHCARD QUESTION
Front
A neutral atom of the element sodium has 11 protons and ____ electrons.
Back
11
7.
FLASHCARD QUESTION
Front
Do the following atoms belong to the same element? Aluminum-27 and an atom with 14 protons and 13 neutrons.
Back
No because they have different number of protons
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