1 / 8

Transmutation ( Objective 25.6: Identify two ways transmutation can occur)

Transmutation ( Objective 25.6: Identify two ways transmutation can occur). Transmutation is the conversion of an atom of one element to the atom of another element Happens naturally during radioactive decay Examples?

megara
Télécharger la présentation

Transmutation ( Objective 25.6: Identify two ways transmutation can occur)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Transmutation (Objective 25.6: Identify two ways transmutation can occur) • Transmutation is the conversion of an atom of one element to the atom of another element • Happens naturally during radioactive decay • Examples? • Happens when particles (usually alpha particles, protons or neutrons) bombard the nucleus of an atom • Examples: every element above atomic #92 was made artificially in the laboratory

  2. Man-made elements Example: creating plutonium-239 from uranium-238

  3. Practicing Transmutation Write an equation for the transmutation of protactinium-232 by bombardment with a neutron. One of the 2 products is a beta particle. Write an equation for the transmutation of beryllium-9 with an alpha particle. One of the two products is a neutron.

  4. Fission v. FusionObjective 25.9: Distinguish fission reactions from fusion reactions. • Fission- splitting of nucleus into smaller fragments • Only two isotopes that are fissionable: uranium-235 and plutonium-239 • Releases a lot of energy • Also releases neutrons– creates a chain reaction- these neutrons react with other fissionable nuclei which release more neutrons…..

  5. Uses of Fission: Nuclear Power PlantObjective25.8: Explain how a nuclear power plant works.

  6. Uses of Fission: Nuclear Power PlantObjective25.8: Explain how a nuclear power plant works. • Nuclear energy  heat energy  mechanical energy  electrical energy • Neutron moderators • used to increase energy release by slowing down neutrons so that they actually cause fission • Rods of carbon or water • Neutron absorbers • Used to decrease energy release by decreasing the number of moving neutrons • Rods of cadmium

  7. Nuclear Waste

  8. Fusion • Fusion- when nuclei combine to produce a nucleus of greater mass • Example

More Related