words

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Across
  1. 3. substances that are made up
  2. 7. group of atoms
  3. 8. Chemical Reaction mass
  4. 9. equation using symbols
  5. 10. soild luigd gas
  6. 11. letter
  7. 13. produce or prove
  8. 14. event account of an event
  9. 16. made by mixing
  10. 19. divere in character or content
Down
  1. 1. of the same kind
  2. 2. solving a problem
  3. 4. a part aspect of something
  4. 5. a thing is composed of two or more
  5. 6. an ariticle or substance
  6. 12. number or letter
  7. 15. assets in excess
  8. 17. reaction a reaction
  9. 18. a relationship between people