P2-7.6- How the chemical elements formed

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  • Created by: Grace
  • Created on: 06-05-13 12:44
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  • 7.6- How the chemical elements formed
    • chemical elemnts are formed through the fusion process in stars.
    • the nuclei of lighter elemts fuse together to form the nuclei of heavier elements.
      • this process releases large amounts of energy
    • Elements heavier than iron are only formed in the final stages of the life of a big star
      • this is because the process requires the imput of energy. All the elements get distributed through space by the supernova explosion
    • The presence of heavier elements in the Sun and iner planets is evidence that they were formed from debris scattered by a supernova.


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