Atomic Structure and Isotopes
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Last updated 2:51 PM on 5/21/25
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8 Terms
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Atom Definition
The smallest unit of matter that retains properties of a chemical element
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What is inside an atom?
Protons, neutrons, electrons
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What does the atomic number equal?
The number of protons in the nucleus
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What is a Neutral element?
When the number of protons = the number of electrons
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How do you find the number of neutrons?
Atomic mass - Protons
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What is the charge and mass of a neutron?
Mass of 1 amu
No charge
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What is the charge and mass of an electron?
Mass of 0
Charge of -1
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What is the charge and mass of a proton?
Mass of 1
Charge of 1
Note 
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