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atomic number the number of proton in an atom identifies the element
atomic mass sum of the number of proton s and neutrons located in the nucleus and measured in atomic mass units (AMU)
isotope an atom that has a different umber of neutrons than normal, still the same element only heavier
Ion an atom that has gained electrons (becomes positive) or an atom that has lost electrons (becomes negative)
Valence electrons the number of electrons that are in the outside energy level (ring) these determine how the atom reacts with other atoms
Electron Negatively charged particle that exists in an electron cloud formation around an atom’s nucleus.
proton positively charged particle that is in the nucleus of an atom
Neutron electrically neutral particle that has the same mass as a proton and is found in an atoms nucleus
electron cloud region surrounding the nucleus of an atom, where electrons are found
nucleus the very tiny and dense region in the center of an atom that contains both protons and neutrons
Created by: rskonieczny98