Isotopes and Ions

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Isotopes and Ions

• Science 9

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How do I know the difference between an Isotope
and an Ion?

• Look at the info you have on the atom
• Mass
• Atomic
• p
• e-
• n
• Symbol
• Which one doesnt match?

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Isotope or Ion?

• If the theres a problem with the number of
  neutrons (too many/too few) its an ISOPTOPE.
• If theres a problem with the number of electrons
  (too many/too few) its an ION.

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Isotope or Ion?

• If there are too many or too few neutrons, the
  atom is NOT the average atom. That means it is
  an ISOTOPE.
• If the atom has more protons then electrons its
  a POSITIVE ION.
• If the atoms has more electrons then protons its
  a NEGATIVE ION.

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ION/ISOTOPE/ATOM Practice
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ANSWERS
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Making Observations

• Direct vs. Indirect Observation
• For example, if you were interested in seeing how
  much candy was purchased by a particular
  neighborhood, you could gather the information in
  one of the two following ways
• Indirect observation tends to be used when the
  data cannot be gathered through direct means, or
  when gathering the data through direct
  observation tends to be too expensive.

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Direct Observations Defined

• Direct observations involve looking at the actual
  behavior or occurrence rather than a result of
  that occurrence, which would be an indirect
  observation.

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Direct observationExample

• Observe customers in a store and count how many
  bags of candy they purchase.

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Indirect observation

• Look through trash cans on garbage day to see how
  many empty candy bags are in each trash bin.