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2-1 Vocab

nucleus is the region at the center of the atom that contains most of the mass of the atom
proton positively charged particle in the nucleus of an atom
neutron an uncharged particle in the nucleus of an atom
electron negatively charged particle that occupies the space in an atom outside the nucleus
electron cloud the region surrounding an atom's nucleus where one or more electrons are most likely to be found
atomic number the number of protons in the nucleus of an atom of an element
ion an atom that has charged because it has gained or lost electrons
isotope is one o two or more atoms of an element having the same number of protons but a different number of neutrons
Created by: hartisa1170