What are Isotopes How are they used and a song to cheer you up http:www'youtube'comwatchvGFIvXVMbII0 - PowerPoint PPT Presentation

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What are Isotopes How are they used and a song to cheer you up http:www'youtube'comwatchvGFIvXVMbII0

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Atoms with the same atomic number but with different atomic masses are ... Using a Geiger Counter to show gamma, beta, alpha radiation: http://www.youtube. ... – PowerPoint PPT presentation

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Title: What are Isotopes How are they used and a song to cheer you up http:www'youtube'comwatchvGFIvXVMbII0


1
  • What are Isotopes?How are they used?and a
    song to cheer you up! http//www.youtube.com/watc
    h?vGFIvXVMbII0featurerelated

2
  • Atoms with the same atomic number but with
    different atomic masses are called isotopes
  • Another way to say it
  • Atoms of the same element with differing numbers
    of neutrons

3
  • Isotopes have identical chemical properties, yet
    have very different nuclear properties.
  • Remember
  • Protons determine the element
  • Electrons determine the chemical properties
  • Neutrons determine the isotope

4
For example, there are three isotopes of
hydrogen, as we learned in January. Two of
these isotopes are stable, (not radioactive), but
tritium (one proton and two neutrons) is
unstable.
5
  • Most elements have stable isotopes.
  • Radioactive isotopes can also be created for many
    elements.

6
What are isotopes used for???
  • Mostly in medicine
  • Archeology to date how old things are
  • Smoke detectors
  • Irradiation in pest control
  • Food irradiation
  • Agriculture application radioactive tracers
  • http//www.chem.duke.edu/jds/cruise_chem/nuclear/
    uses.html

7
  • What is gamma radiation?High energy
    electromagnetic radiation that is emitted from an
    atom's nucleus has no mass or electrical charge
    has high penetrating power, and can pass though
    the human body
  • What is beta radiations? An electron emitted
    when a neutron becomes a proton, moving at nearly
    the speed of light. Beta particles can penetrate
    paper or several millimeters of skin, and like
    alpha particles, are very dangerous when
    substances emitting them are ingested or inhaled
  • What is Alpha radiation? Alpha decay is a type
    of radioactive decay in which an atomic nucleus
    emits an alpha particle (two protons and two
    neutrons bound together into a particle identical
    to a helium nucleus) and is the most energetic
    but least penetrating form of radiation. It can
    be stopped by a sheet of paper and cannot
    penetrate human skin

8
  • Using a Geiger Counter to show gamma, beta, alpha
    radiation http//www.youtube.com/watch?vkaS11fW
    7nNc
  • A great song showing more about gamma, beta, and
    alpha radiation http//www.youtube.com/watch?vN
    P9Woxbkr_Mfeaturerelated
  • More of the Element Song
  • http//www.youtube.com/watch?vDYW50F42ss8feature
    related
  • http//www.youtube.com/watch?v1I1MGsSDS8cfeature
    related
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