Chemistry vocab crossword

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Across
  1. 4. anything that takes up space and has volume
  2. 6. State of matter that has a set shape and set volume
  3. 8. reaction that releases energy and forms bonds
  4. 9. reaction that absorbs energy adn breaks bonds
  5. 13. state of matter that has no specific shape or volume, but has a electrical charge
  6. 15. replacement type of reaction that involves two compounds and they switch element partners
  7. 18. state of matter that has no set shape but a set volume
  8. 19. neutral particle in the atom
Down
  1. 1. when two or more substances combine to form one single substance
  2. 2. has no specific shape or volume
  3. 3. positively charged particle in the atom
  4. 5. negatively charged particle in the atom
  5. 7. when one substance breaks down into two or more substances
  6. 10. a molecules made of more than one element that are bonded together
  7. 11. the starting materials in a chemical reaction
  8. 12. the ending materials in a chemical reaction
  9. 14. replacement when on element replaces another in a compound
  10. 16. a pure substance made of one type of atom
  11. 17. the center of the atom