Periodic table

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Across
  1. 2. substances physically mixed
  2. 5. before the arrow
  3. 6. same number of atoms in on each reactants
  4. 8. made of one substance
  5. 9. after the arrow
  6. 10. tiny number
Down
  1. 1. explode
  2. 3. big number to multiply
  3. 4. different atoms
  4. 7. chemically bounded