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Transcript 
Ion or Isotope
Lab
IONS are atoms with a CHARGE.
An atom will have a charge if the
number PROTONS and ELECTRONS
are NOT EXACTLY the same.
The number of PROTONS ALWAYS
identifies the element on the periodic
table.
If there are more protons than
electrons, there will be a POSITIVE
charge.
If there are more electrons, there will
be a NEGATIVE charge.
The number of additional protons or
electrons will determine the charge.
For example, if there are two extra
protons - the charge will be 2+.
If there are three extra electrons – the
charge will be 3-.
ISOTOPES have different numbers of
NEUTRONS.
You can calculate the number of
neutrons by subtracting the ATOMIC
NUMBER from the ATOMIC MASS
NUMBER.
If the NEUTRON NUMBER does not
match the number of neutrons that
you got when you subtracted, then
that atom is an ISOTOPE.
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