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Atom, Ion, or Isotope?
Atoms
Atoms are neutral
Protons = Electrons
There are special kinds of
atoms....
Ions
Isotopes
Ions
An Ion is an atom that has gained or
lost ELECTRONS, so it has an overall
charge
If an atom gains electrons, it’s overall
charge becomes negative. If an atom
loses electrons, it’s overall charge
becomes positive.
If an atom gains/loses electrons, its
mass will not change.
Isotopes
An Isotope is an atom that has gained
or lost NEUTRONS
If an atom gains/loses neutrons, charge
is not affected.
If an atom gains neutrons, its mass will
increase.
If an atom loses neutrons, its mass will
decrease.
Atomic Number
Because atoms can gain or
lose electrons and neutrons
to become ions or isotopes,
the atomic number will
ALWAYS identify the number
of PROTONS an atoms has.
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