Unit 2 Vocab Avinay Bhattarai

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Across
  1. 2. no mass that carries a quantum of energy.
  2. 5. An ion that has a positive charge
  3. 7. An atom or bonded groups of atoms with a or negative charge
  4. 8. A particle of electromagnetic radiation
  5. 10. The rays and particles—alpha and beta
  6. 12. A particle with two protons and two
  7. 13. points on a continuous wave; is usually expressed in meters, centimeters, or nanometers
  8. 15. The minimum amount of energy that can be gained or lost by an atom.
  9. 16. and gamma rays—that are emitted by radioactive materials.
  10. 17. An ion that has a negative charge
  11. 18. a principal energy level.
  12. 19. can be represented as α; and is emitted during
  13. 20. The shortest distance between equiva-
Down
  1. 1. emit radiation.
  2. 3. The process in which some substances
  3. 4. The energy levels contained
  4. 6. A type of equation that shows
  5. 9. with a 2+ charge; is equivalent to a helium-4
  6. 11. atomic number and mass number of the particles
  7. 14. decay.