Chemistry Final Crossword

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Across
  1. 2. electrons given off by some types of radioactive decay
  2. 3. distance of two similar points of a wave
  3. 4. isotope used to estimate age through carbon dating
  4. 7. breakdown of a nucleus releasing energy and matter
  5. 9. given off by some types of radioactive decay; helium nuclei
  6. 11. found in the periodic table
  7. 13. the effect of one factor depends on the level of another
  8. 16. when light shifts towards the red end of the spectrum
  9. 18. distance traveled per unit of time
  10. 20. when a nucleus splits into smaller nuclei
  11. 22. speed in a given direction
  12. 23. anything that takes up space
  13. 24. particles that transmit light
Down
  1. 1. scientists’ best understanding of how the universe formed
  2. 5. center of an atom containing protons and neutrons
  3. 6. means "break down"
  4. 8. when two nuclei are joined into a larger nucleus
  5. 10. The time it takes for half a sample of radioactive nuclei to decay
  6. 12. subatomic particle with a positive charge
  7. 14. atoms of the same element but different mass
  8. 15. a measure of the amount of matter in an object
  9. 16. the emission of energy or particles
  10. 17. high-energy photons from radioactive decay
  11. 19. subatomic particle with negative charge
  12. 21. subatomic particle with no charge (neutral)