Friday Crossword

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Across
  1. 3. the study of matter and the changes it undergoes
  2. 6. a battle where Benedict Arnold was the hero
  3. 9. a collection of different things
  4. 10. a change from the normal
  5. 13. to be worthy of
  6. 15. work done for others
  7. 16. a substance made of only one kind of atom
  8. 17. ordered knowledge of the natural world
  9. 20. number of electrons in the first shell
  10. 21. of several different types
  11. 22. the building blocks for matter
  12. 23. positively charged particles
  13. 24. like to change or be different
  14. 25. a city in which there was a Tea Party and a Massacre
Down
  1. 1. negatively charged particles
  2. 2. able to be used
  3. 4. anything that occupies space and has mass
  4. 5. number of colonies during the American Revolution
  5. 7. a midnight rider
  6. 8. "no ______ without representation!"
  7. 11. a surprise battle the night after Christmas
  8. 12. neutrally charged particles
  9. 14. the principle author of the Declaration of Independence
  10. 15. a computer that serves as the connector for a network
  11. 18. Thomas Paine wrote this
  12. 19. the number of elements the Greeks had