Quantum Phenomena

1. The wave-like nature of an electron is observed when what happens? (11)
4. Electrons that absorb energy from colliding electrons without being ionised are what? (7)
5. When excitation occurs an electron moves up an energy level, from what? (6, 5)
6. What unit is the work function in? (6)
7. Photoelectric emission does happen is the frequency is below the _______ frequency. (9)

1. The wave-like behaviour of the particle can be workout out by calculating what wavelength? (2, 7)
2. By measuring what, on a line spectrum, you can identify the element that produced the light. (10)
3. What term is the same as the minimum energy to release an electron? (4, 8)
8. When electromagnetic radiaton is above a certain frequency a electron is emitted, this is the _______ effect (13)
9. No other element produces the same pattern of light wavelengths. This is because the energy levels are ______ to that atom. (6)

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