Parts of an atom and definitions
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nucleus
made up of the protons and neutrons, this part of the atom contains nearly all the mass of the atom
atom
this is a building block of matter
electron orbit
this refers to the travel of electrons around the nucleus of an atom
electron
this small particle of an atom carries a negative charge
neutron
this small particle of an atom carries a neutral charge
proton
this small particle of an atom carries a positive charge
