Quantum

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Across
  1. 4. h (7, 8)
  2. 6. when an electron is removed from an atom (7)
  3. 8. wave-particle duality theory (2, 7)
  4. 10. amount of energy needed to completely remove an electron from the atom from the ground state.
  5. 12. waves can show wave like properties and particle properties (4, 8, 7)
  6. 13. a resultant wave (12)
  7. 16. electrons emitted during the photoelectric effect (14)
  8. 17. Emission of electrons when a metal surface gains energy (13)
  9. 19. EM waves exist in discrete packets (6)
  10. 21. frequency at which photoelectrons are emitted(9, 9)
Down
  1. 1. discrete quantity of energy (7)
  2. 2. kinetic energy carried by an electron after it has been accelerated through a pd of 1v (12)
  3. 3. distance between points in a wave (10)
  4. 5. spreading of waves when they come out through a narrow gap (11)
  5. 7. energy needed to break the bonds holding the electrons (4, 8)
  6. 9. 1/2mv^2 (7, 6)
  7. 11. movement of an electron to a higher energy level (10)
  8. 14. combination of two or more waveforms to
  9. 15. p.d needed to stop the fastest moving electron with max. ke (8, 9)
  10. 18. band of colours(8)
  11. 20. p.d x charge (4, 4)