What is the mass number of an atom, and how is it calculated?
Atoms Review

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The mass number of an atom is the total number of protons and neutrons in its nucleus. It is calculated by adding the number of protons (atomic number) to the number of neutrons.
2.
FLASHCARD QUESTION
Front
How many neutrons are in an atom with 36 protons and a mass number of 84?
Back
48 neutrons (calculated as mass number 84 - protons 36 = neutrons 48).
3.
FLASHCARD QUESTION
Front
What charge do electrons carry, and how does it compare to protons?
Back
Electrons carry a negative charge, which is smaller in magnitude than the positive charge of protons.
4.
FLASHCARD QUESTION
Front
Where are electrons located in an atom, and what is their charge?
Back
Electrons are located outside the nucleus of an atom and carry a negative charge.
5.
FLASHCARD QUESTION
Front
What is the nucleus of an atom, and what particles does it contain?
Back
The nucleus is a small, dense region at the center of the atom, containing positive protons and neutral neutrons.
6.
FLASHCARD QUESTION
Front
What types of particles are found outside the nucleus of an atom?
Back
Only negative particles, which are electrons, are found outside the nucleus.
7.
FLASHCARD QUESTION
Front
Define an atom and its basic structure.
Back
An atom is the smallest unit of an element, consisting of a nucleus (containing protons and neutrons) and electrons that orbit around the nucleus.
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