Chapter 4 Vocabulary

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Across
  1. 2. The study of the way in which atoms absorb and emit electromagnetic radiation
  2. 4. _____ state is the state of an atom when one of its electrons is in a higher energy orbital than the ground state
  3. 5. A particle of electromagnetic radiation or energy
  4. 6. Three laws governing the formation of spectra
  5. 7. _____ model was the first theory of the hydrogen atom to explain the observed spectral lines
  6. 9. A particle carrying a neutral charge
  7. 10. Matter made up of one particular atom
  8. 12. The dense central region of an atom
  9. 15. A particle carrying a negative electric charge
  10. 16. The microscopic building blocks from which all matter is constructed
Down
  1. 1. _____ effect is the emission of an electron from a surface when a photon of electromagnetic radiation is absorbed
  2. 3. Instrument used to produce detailed spectra of stars
  3. 8. _____ state is the lowest energy state that an electron can have within an atom
  4. 11. A tightly bound group of atoms held together by interactions among their orbiting electrons
  5. 13. A particle carrying a positive electric charge
  6. 14. The separation of light into its component colors