Chemistry Final Crossword

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Across
  1. 1. the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.
  2. 3. (of an object or structure) not likely to give way or overturn; firmly fixed.
  3. 4. of very great extent or quantity; immense.
  4. 7. a straight line from the center to the circumference of a circle or sphere.
  5. 9. a coherent, typically large body of matter with no definite shape.
  6. 12. an explosive warhead carried by a missile.
  7. 15. break or cause to break forcibly into parts, especially into halves or along the grain.
  8. 16. a minute portion of matter.
  9. 19. the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.
  10. 20. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1.
  11. 23. produce and discharge (something, especially gas or radiation).
  12. 24. a part or aspect of something abstract, especially one that is essential or characteristic.
  13. 25. a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
Down
  1. 2. of, worked by, charged with, or producing electricity.
  2. 5. prone to change, fail, or give way; not stable.
  3. 6. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
  4. 8. relating to the nucleus of an atom.
  5. 10. a continuous area or expanse which is free, available, or unoccupied.
  6. 11. an amount of space between two things or people.
  7. 13. represent (something) in graphic form.
  8. 14. able to be seen.
  9. 17. atoms as a source of nuclear energy.
  10. 18. the external form or appearance characteristic of someone or something; the outline of an area or figure.
  11. 21. the strength and vitality required for sustained physical or mental activity.
  12. 22. the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.