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the smallest part of an element that has all of an element’s properties atom
smaller parts that make up an atom subatomic particles
positive subatomic particle found in the nucleus proton
subatomic particle in the nucleus that has no charge or is neutral neutron
negative subatomic particle that is found around the nucleus electron
tells the number of protons in each atom of an element atomic number
tells the total number of protons plus neutrons in the nucleus of an atom mass number OR atomic mass
center of an atom where most of its mass is found nucleus
positive protons attracted to negative electrons; force that holds an atom together electric force
atoms of the same element that have different numbers of neutrons, and therefore, different masses isotopes
region in an atom where electrons are likely to be found orbital
an electron that is found in the outermost shell of an atom and that determines the atom's chemical properties valence electron
lowest state of energy of an electron ground state
any energy state of an electron that is higher than the ground state excited state
unit or quantum of light that is given off by an electron when it falls to a lower energy level photon
Created by: CRMissK