P2-7.6- How the chemical elements formed
- 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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