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4 Cards in this Set

  • Front
  • Back

proton

a subatomic particle that has a positive charge and that is found in a nucleus of an atom

atomic mass unit

a unit of mass that describes the mass of the atom or molecule

neutron

a subatomic particle that has no charge and that has no charge and that is found in a nucleus of an atom

atomic number

the number of protons in the nucleus of an atom the atoms number is the same for all atoms in an element