• When a massive star has no more elements left to fuse, it explodes as a supernova.
  • The elements heavier than iron form in supernova explosions, including gold, silver, and uranium.
  • A supernova explosion spreads the elements into nearby space.
  • This is the source of most of our elements.
  • All chemical elements except hydrogen, helium, and lithium were created in stars.
  • These chemical elements are found in our solar system and on Earth because of supernovae.
  • Use the resource below to answer the questions that follow.
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