6 terms

Module 13-Part 1

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Terms in this set (...)

Model
A schematic description of a system that accounts for it's known properties.
Nucleus
The center of an atom, containing protons and neutrons.
Atomic Number
The number of protons in an atom.
Mass Number
The sum of the numbers of neutrons and protons in the nucleus of an atom.
Isotopes
Atoms with the same number of protons but different number of neutrons.
Element
A collection of atoms that all have the same number of protons.