What is the mass number of an atom?
Neutral Atoms, Ions, and Isotopes

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Physics, Chemistry
•
6th - 9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The mass number is the total number of protons and neutrons in the nucleus of an atom.
2.
FLASHCARD QUESTION
Front
How do you calculate the number of neutrons in an isotope?
Back
Subtract the atomic number (number of protons) from the mass number.
3.
FLASHCARD QUESTION
Front
What is the charge of a Li+ ion?
Back
A Li+ ion has a positive charge due to the loss of one electron.
4.
FLASHCARD QUESTION
Front
What happens to an atom when it loses an electron?
Back
It becomes a positive ion.
5.
FLASHCARD QUESTION
Front
What is a negative ion called?
Back
A negative ion is called an anion.
6.
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.
7.
FLASHCARD QUESTION
Front
How many protons are in a neutral atom of bromine?
Back
A neutral atom of bromine has 35 protons.
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