Matter and the Big Bang

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Across
  1. 4. second element of the periodic table created after the four super forces broke away
  2. 5. negatively charged particle located in the outer shells of an atom
  3. 7. forces gravity, strong nuclear, weak and electromagnetic.
Down
  1. 1. all physical things that have a mass and take up space
  2. 2. positively charged particle located in the nucleus of an atom
  3. 3. Bang a super charged black hole exploded. There was no matter before this explosion. Four super forces were made.
  4. 4. first element of the periodic table created after the four super forces broke away
  5. 6. neutral particle (no charge) located in the nucleus of an atom